CW-527-Add-Polygon-MATIC-Wallet (#1179)

* chore: Initial setup for polygon package

* feat: Add polygon node urls

* feat: Add Polygon(MATIC) wallet WIP

* feat: Add Polygon(MATIC) wallet WIP

* feat: Add Polygon MATIC wallet [skip ci]

* fix: Issue with create/restore wallet for polygon

* feat: Add erc20 tokens for polygon

* feat: Adding Polygon MATIC Wallet

* fix: Add build command for polygon to workflow file to fix failing action

* fix: Switch evm to not display additional balance

* chore: Sync with remote

* fix: Revert change to inject app script

* feat: Add polygon erc20 tokens

* feat: Increase migration version

* fix: Restore from QR address validator fix

* fix: Adjust wallet connect connection flow to adapt to wallet type

* fix: Make wallet fetch nfts based on the current wallet type

* fix: Make wallet fetch nfts based on the current wallet type

* fix: Try fetching transactions with moralis

* fix: Requested review changes

* fix: Error creating new wallet

* fix: Revert script

* fix: Exclude spam NFTs from nft listing API response

* Update default_erc20_tokens.dart

* replace matic with matic poly

* Add polygon wallet scheme to app links

* style: reformat default_settings_migration.dart 

* minor enhancement 

* fix using different wallet function for setting the transaction priorities 

* fix: Add chain to calls

* Add USDC.e to initial coins

* Add other default polygon node 

* Use Polygon scan
some UI fixes

* Add polygon scan api key to secrets generation code

---------

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

.github/workflows/pr_test_build.yml

@@ -97,6 +97,7 @@ jobs:
           cd cw_ethereum && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
           cd cw_bitcoin_cash && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
           cd cw_nano && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
+          cd cw_polygon && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
           flutter packages pub run build_runner build --delete-conflicting-outputs
 
       - name: Add secrets
@@ -131,6 +132,7 @@ jobs:
           echo "const fiatApiKey = '${{ secrets.FIAT_API_KEY }}';" >> lib/.secrets.g.dart
           echo "const payfuraApiKey = '${{ secrets.PAYFURA_API_KEY }}';" >> lib/.secrets.g.dart
           echo "const etherScanApiKey = '${{ secrets.ETHER_SCAN_API_KEY }}';" >> cw_ethereum/lib/.secrets.g.dart
+          echo "const polygonScanApiKey = '${{ secrets.POLYGON_SCAN_API_KEY }}';" >> cw_ethereum/lib/.secrets.g.dart
           echo "const chatwootWebsiteToken = '${{ secrets.CHATWOOT_WEBSITE_TOKEN }}';" >> lib/.secrets.g.dart
           echo "const exolixApiKey = '${{ secrets.EXOLIX_API_KEY }}';" >> lib/.secrets.g.dart
           echo "const robinhoodApplicationId = '${{ secrets.ROBINHOOD_APPLICATION_ID }}';" >> lib/.secrets.g.dart

.gitignore

@@ -126,6 +126,7 @@ lib/haven/haven.dart
 lib/ethereum/ethereum.dart
 lib/bitcoin_cash/bitcoin_cash.dart
 lib/nano/nano.dart
+lib/polygon/polygon.dart
 
 ios/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_180.png
 ios/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_120.png

android/app/src/main/AndroidManifestBase.xml

@@ -62,6 +62,9 @@
                 <data android:scheme="bitcoincash" />
                 <data android:scheme="bitcoincash-wallet" />
                 <data android:scheme="bitcoincash_wallet" />
+                <data android:scheme="polygon" />
+                <data android:scheme="polygon-wallet" />
+                <data android:scheme="polygon_wallet" />
             </intent-filter>
         </activity>
         <meta-data

assets/polygon_node_list.yml

@@ -0,0 +1,6 @@
+-
+  uri: polygon-bor.publicnode.com
+-
+  uri: polygon-rpc.com
+- 
+  uri: polygon.llamarpc.com

cw_core/lib/currency_for_wallet_type.dart

@@ -19,6 +19,8 @@ CryptoCurrency currencyForWalletType(WalletType type) {
       return CryptoCurrency.nano;
     case WalletType.banano:
       return CryptoCurrency.banano;
+    case WalletType.polygon:
+      return CryptoCurrency.maticpoly;
     default:
       throw Exception('Unexpected wallet type: ${type.toString()} for CryptoCurrency currencyForWalletType');
   }

cw_core/lib/erc20_token.dart

@@ -58,6 +58,7 @@ class Erc20Token extends CryptoCurrency with HiveObjectMixin {
 
   static const typeId = ERC20_TOKEN_TYPE_ID;
   static const boxName = 'Erc20Tokens';
+  static const polygonBoxName = ' PolygonErc20Tokens';
 
   @override
   bool operator ==(other) => (other is Erc20Token && other.contractAddress == contractAddress) ||

cw_core/lib/node.dart

@@ -88,6 +88,8 @@ class Node extends HiveObject with Keyable {
         } else {
           return Uri.http(uriRaw, '');
         }
+      case WalletType.polygon:
+        return Uri.https(uriRaw, '');
       default:
         throw Exception('Unexpected type ${type.toString()} for Node uri');
     }
@@ -146,6 +148,8 @@ class Node extends HiveObject with Keyable {
         case WalletType.nano:
         case WalletType.banano:
           return requestNanoNode();
+        case WalletType.polygon:
+          return requestElectrumServer();
         default:
           return false;
       }

cw_core/lib/wallet_type.dart

@@ -13,6 +13,7 @@ const walletTypes = [
   WalletType.bitcoinCash,
   WalletType.nano,
   WalletType.banano,
+  WalletType.polygon,
 ];
 
 @HiveType(typeId: WALLET_TYPE_TYPE_ID)
@@ -44,6 +45,8 @@ enum WalletType {
   @HiveField(8)
   bitcoinCash,
 
+  @HiveField(9)
+  polygon
 }
 
 int serializeToInt(WalletType type) {
@@ -64,6 +67,8 @@ int serializeToInt(WalletType type) {
       return 6;
     case WalletType.bitcoinCash:
       return 7;
+    case WalletType.polygon:
+      return 8;
     default:
       return -1;
   }
@@ -87,6 +92,8 @@ WalletType deserializeFromInt(int raw) {
       return WalletType.banano;
     case 7:
       return WalletType.bitcoinCash;
+    case 8:
+      return WalletType.polygon;
     default:
       throw Exception('Unexpected token: $raw for WalletType deserializeFromInt');
   }
@@ -110,6 +117,8 @@ String walletTypeToString(WalletType type) {
       return 'Nano';
     case WalletType.banano:
       return 'Banano';
+    case WalletType.polygon:
+      return 'Polygon';
     default:
       return '';
   }
@@ -133,6 +142,8 @@ String walletTypeToDisplayName(WalletType type) {
       return 'Nano (XNO)';
     case WalletType.banano:
       return 'Banano (BAN)';
+    case WalletType.polygon:
+      return 'Polygon (MATIC)';
     default:
       return '';
   }
@@ -156,7 +167,10 @@ CryptoCurrency walletTypeToCryptoCurrency(WalletType type) {
       return CryptoCurrency.nano;
     case WalletType.banano:
       return CryptoCurrency.banano;
+    case WalletType.polygon:
+      return CryptoCurrency.maticpoly;
     default:
-      throw Exception('Unexpected wallet type: ${type.toString()} for CryptoCurrency walletTypeToCryptoCurrency');
+      throw Exception(
+          'Unexpected wallet type: ${type.toString()} for CryptoCurrency walletTypeToCryptoCurrency');
   }
 }

cw_ethereum/lib/ethereum_client.dart

@@ -15,12 +15,12 @@ import 'package:cw_ethereum/ethereum_transaction_priority.dart';
 import 'package:cw_ethereum/.secrets.g.dart' as secrets;
 
 class EthereumClient {
-  final _httpClient = Client();
+  final httpClient = Client();
   Web3Client? _client;
 
   bool connect(Node node) {
     try {
-      _client = Web3Client(node.uri.toString(), _httpClient);
+      _client = Web3Client(node.uri.toString(), httpClient);
 
       return true;
     } catch (e) {
@@ -74,9 +74,11 @@ class EthereumClient {
     required int exponent,
     String? contractAddress,
   }) async {
-    assert(currency == CryptoCurrency.eth || contractAddress != null);
+    assert(currency == CryptoCurrency.eth ||
+        currency == CryptoCurrency.maticpoly ||
+        contractAddress != null);
 
-    bool _isEthereum = currency == CryptoCurrency.eth;
+    bool _isEVMCompatibleChain = currency == CryptoCurrency.eth || currency == CryptoCurrency.maticpoly;
 
     final price = _client!.getGasPrice();
 
@@ -84,19 +86,23 @@ class EthereumClient {
       from: privateKey.address,
       to: EthereumAddress.fromHex(toAddress),
       maxPriorityFeePerGas: EtherAmount.fromInt(EtherUnit.gwei, priority.tip),
-      value: _isEthereum ? EtherAmount.inWei(BigInt.parse(amount)) : EtherAmount.zero(),
+      value: _isEVMCompatibleChain ? EtherAmount.inWei(BigInt.parse(amount)) : EtherAmount.zero(),
     );
 
-    final signedTransaction = await _client!.signTransaction(privateKey, transaction);
+    final chainId = _getChainIdForCurrency(currency);
+
+    final signedTransaction =
+        await _client!.signTransaction(privateKey, transaction, chainId: chainId);
 
     final Function _sendTransaction;
 
-    if (_isEthereum) {
+    if (_isEVMCompatibleChain) {
       _sendTransaction = () async => await sendTransaction(signedTransaction);
     } else {
       final erc20 = ERC20(
         client: _client!,
         address: EthereumAddress.fromHex(contractAddress!),
+        chainId: chainId,
       );
 
       _sendTransaction = () async {
@@ -118,6 +124,16 @@ class EthereumClient {
     );
   }
 
+  int _getChainIdForCurrency(CryptoCurrency currency) {
+    switch (currency) {
+      case CryptoCurrency.maticpoly:
+        return 137;
+      case CryptoCurrency.eth:
+      default:
+        return 1;
+    }
+  }
+
   Future<String> sendTransaction(Uint8List signedTransaction) async =>
       await _client!.sendRawTransaction(prependTransactionType(0x02, signedTransaction));
 
@@ -198,7 +214,7 @@ I/flutter ( 4474): Gas Used: 53000
   Future<List<EthereumTransactionModel>> fetchTransactions(String address,
       {String? contractAddress}) async {
     try {
-      final response = await _httpClient.get(Uri.https("api.etherscan.io", "/api", {
+      final response = await httpClient.get(Uri.https("api.etherscan.io", "/api", {
         "module": "account",
         "action": contractAddress != null ? "tokentx" : "txlist",
         if (contractAddress != null) "contractaddress": contractAddress,

cw_ethereum/lib/ethereum_transaction_info.dart

@@ -1,3 +1,5 @@
+import 'dart:math';
+
 import 'package:cw_core/format_amount.dart';
 import 'package:cw_core/transaction_direction.dart';
 import 'package:cw_core/transaction_info.dart';
@@ -34,8 +36,10 @@ class EthereumTransactionInfo extends TransactionInfo {
   final String? to;
 
   @override
-  String amountFormatted() =>
+  String amountFormatted() {
-      '${formatAmount((ethAmount / BigInt.from(10).pow(exponent)).toString())} $tokenSymbol';
+    final amount = formatAmount((ethAmount / BigInt.from(10).pow(exponent)).toString());
+    return '${amount.substring(0, min(10, amount.length))} $tokenSymbol';
+  }
 
   @override
   String fiatAmount() => _fiatAmount ?? '';
@@ -44,7 +48,10 @@ class EthereumTransactionInfo extends TransactionInfo {
   void changeFiatAmount(String amount) => _fiatAmount = formatAmount(amount);
 
   @override
-  String feeFormatted() => '${(ethFee / BigInt.from(10).pow(18)).toString()} ETH';
+  String feeFormatted() {
+    final amount = (ethFee / BigInt.from(10).pow(18)).toString();
+    return '${amount.substring(0, min(10, amount.length))} ETH';
+  }
 
   factory EthereumTransactionInfo.fromJson(Map<String, dynamic> data) {
     return EthereumTransactionInfo(

cw_ethereum/lib/ethereum_transaction_model.dart

@@ -1,3 +1,4 @@
+//! Model used for in parsing transactions fetched using etherscan
 class EthereumTransactionModel {
   final DateTime date;
   final String hash;

cw_ethereum/lib/pending_ethereum_transaction.dart

@@ -21,8 +21,8 @@ class PendingEthereumTransaction with PendingTransaction {
 
   @override
   String get amountFormatted {
-    final _amount = BigInt.parse(amount) / BigInt.from(pow(10, exponent));
+    final _amount = (BigInt.parse(amount) / BigInt.from(pow(10, exponent))).toString();
-    return _amount.toStringAsFixed(min(15, _amount.toString().length));
+    return _amount.substring(0, min(10, _amount.length));
   }
 
   @override
@@ -30,8 +30,8 @@ class PendingEthereumTransaction with PendingTransaction {
 
   @override
   String get feeFormatted {
-    final _fee = fee / BigInt.from(pow(10, 18));
+    final _fee = (fee / BigInt.from(pow(10, 18))).toString();
-    return _fee.toStringAsFixed(min(15, _fee.toString().length));
+    return _fee.substring(0, min(10, _fee.length));
   }
 
   @override

cw_polygon/.gitignore

@@ -0,0 +1,30 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+.packages
+build/

cw_polygon/.metadata

@@ -0,0 +1,10 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: f468f3366c26a5092eb964a230ce7892fda8f2f8
+  channel: stable
+
+project_type: package

cw_polygon/CHANGELOG.md

@@ -0,0 +1,3 @@
+## 0.0.1
+
+* TODO: Describe initial release.

cw_polygon/LICENSE

@@ -0,0 +1 @@
+TODO: Add your license here.

cw_polygon/README.md

@@ -0,0 +1,39 @@
+<!--
+This README describes the package. If you publish this package to pub.dev,
+this README's contents appear on the landing page for your package.
+
+For information about how to write a good package README, see the guide for
+[writing package pages](https://dart.dev/guides/libraries/writing-package-pages).
+
+For general information about developing packages, see the Dart guide for
+[creating packages](https://dart.dev/guides/libraries/create-library-packages)
+and the Flutter guide for
+[developing packages and plugins](https://flutter.dev/developing-packages).
+-->
+
+TODO: Put a short description of the package here that helps potential users
+know whether this package might be useful for them.
+
+## Features
+
+TODO: List what your package can do. Maybe include images, gifs, or videos.
+
+## Getting started
+
+TODO: List prerequisites and provide or point to information on how to
+start using the package.
+
+## Usage
+
+TODO: Include short and useful examples for package users. Add longer examples
+to `/example` folder.
+
+```dart
+const like = 'sample';
+```
+
+## Additional information
+
+TODO: Tell users more about the package: where to find more information, how to
+contribute to the package, how to file issues, what response they can expect
+from the package authors, and more.

cw_polygon/analysis_options.yaml

@@ -0,0 +1,4 @@
+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

cw_polygon/lib/cw_polygon.dart

@@ -0,0 +1,7 @@
+library cw_polygon;
+
+/// A Calculator.
+class Calculator {
+  /// Returns [value] plus 1.
+  int addOne(int value) => value + 1;
+}

cw_polygon/lib/default_erc20_tokens.dart

@@ -0,0 +1,86 @@
+import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/erc20_token.dart';
+
+class DefaultPolygonErc20Tokens {
+  final List<Erc20Token> _defaultTokens = [
+    Erc20Token(
+      name: "Wrapped Ether",
+      symbol: "WETH",
+      contractAddress: "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
+      decimal: 18,
+      enabled: false,
+    ),
+    Erc20Token(
+      name: "Tether USD (PoS)",
+      symbol: "USDT",
+      contractAddress: "0xc2132D05D31c914a87C6611C10748AEb04B58e8F",
+      decimal: 6,
+      enabled: true,
+    ),
+    Erc20Token(
+      name: "USD Coin",
+      symbol: "USDC",
+      contractAddress: "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
+      decimal: 6,
+      enabled: true,
+    ),
+    Erc20Token(
+      name: "USD Coin (POS)",
+      symbol: "USDC.e",
+      contractAddress: "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174",
+      decimal: 6,
+      enabled: false,
+    ),
+    Erc20Token(
+      name: "Avalanche Token",
+      symbol: "AVAX",
+      contractAddress: "0x2C89bbc92BD86F8075d1DEcc58C7F4E0107f286b",
+      decimal: 18,
+      enabled: false,
+    ),
+    Erc20Token(
+      name: "Wrapped BTC (PoS)",
+      symbol: "WBTC",
+      contractAddress: "0x1BFD67037B42Cf73acF2047067bd4F2C47D9BfD6",
+      decimal: 8,
+      enabled: false,
+    ),
+    Erc20Token(
+      name: "Dai (PoS)",
+      symbol: "DAI",
+      contractAddress: "0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063",
+      decimal: 18,
+      enabled: true,
+    ),
+    Erc20Token(
+      name: "SHIBA INU (PoS)",
+      symbol: "SHIB",
+      contractAddress: "0x6f8a06447Ff6FcF75d803135a7de15CE88C1d4ec",
+      decimal: 18,
+      enabled: false,
+    ),
+    Erc20Token(
+      name: "Uniswap (PoS)",
+      symbol: "UNI",
+      contractAddress: "0xb33EaAd8d922B1083446DC23f610c2567fB5180f",
+      decimal: 18,
+      enabled: false,
+    ),
+  ];
+
+  List<Erc20Token> get initialPolygonErc20Tokens => _defaultTokens.map((token) {
+        String? iconPath;
+        try {
+          iconPath = CryptoCurrency.all
+              .firstWhere((element) =>
+                  element.title.toUpperCase() == token.symbol.toUpperCase())
+              .iconPath;
+        } catch (_) {}
+
+        if (iconPath != null) {
+          return Erc20Token.copyWith(token, iconPath);
+        }
+
+        return token;
+      }).toList();
+}

cw_polygon/lib/pending_polygon_transaction.dart

@@ -0,0 +1,19 @@
+import 'dart:typed_data';
+
+import 'package:cw_ethereum/pending_ethereum_transaction.dart';
+
+class PendingPolygonTransaction extends PendingEthereumTransaction {
+  PendingPolygonTransaction({
+    required Function sendTransaction,
+    required Uint8List signedTransaction,
+    required BigInt fee,
+    required String amount,
+    required int exponent,
+  }) : super(
+          amount: amount,
+          sendTransaction: sendTransaction,
+          signedTransaction: signedTransaction,
+          fee: fee,
+          exponent: exponent,
+        );
+}

cw_polygon/lib/polygon_client.dart

@@ -0,0 +1,34 @@
+import 'dart:convert';
+
+import 'package:cw_ethereum/ethereum_client.dart';
+import 'package:cw_polygon/polygon_transaction_model.dart';
+import 'package:cw_ethereum/.secrets.g.dart' as secrets;
+
+class PolygonClient extends EthereumClient {
+  @override
+  Future<List<PolygonTransactionModel>> fetchTransactions(String address,
+      {String? contractAddress}) async {
+    try {
+      final response = await httpClient.get(Uri.https("api.polygonscan.com", "/api", {
+        "module": "account",
+        "action": contractAddress != null ? "tokentx" : "txlist",
+        if (contractAddress != null) "contractaddress": contractAddress,
+        "address": address,
+        "apikey": secrets.polygonScanApiKey,
+      }));
+
+      final jsonResponse = json.decode(response.body) as Map<String, dynamic>;
+
+      if (response.statusCode >= 200 && response.statusCode < 300 && jsonResponse['status'] != 0) {
+        return (jsonResponse['result'] as List)
+            .map((e) => PolygonTransactionModel.fromJson(e as Map<String, dynamic>))
+            .toList();
+      }
+
+      return [];
+    } catch (e) {
+      print(e);
+      return [];
+    }
+  }
+}

cw_polygon/lib/polygon_exceptions.dart

@@ -0,0 +1,6 @@
+import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_ethereum/ethereum_exceptions.dart';
+
+class PolygonTransactionCreationException extends EthereumTransactionCreationException {
+  PolygonTransactionCreationException(CryptoCurrency currency) : super(currency);
+}

cw_polygon/lib/polygon_formatter.dart

@@ -0,0 +1,25 @@
+import 'package:intl/intl.dart';
+
+const polygonAmountLength = 12;
+const polygonAmountDivider = 1000000000000;
+final polygonAmountFormat = NumberFormat()
+  ..maximumFractionDigits = polygonAmountLength
+  ..minimumFractionDigits = 1;
+
+class PolygonFormatter {
+  static int parsePolygonAmount(String amount) {
+    try {
+      return (double.parse(amount) * polygonAmountDivider).round();
+    } catch (_) {
+      return 0;
+    }
+  }
+
+  static double parsePolygonAmountToDouble(int amount) {
+    try {
+      return amount / polygonAmountDivider;
+    } catch (_) {
+      return 0;
+    }
+  }
+}

cw_polygon/lib/polygon_mnemonics_exception.dart

@@ -0,0 +1,5 @@
+class PolygonMnemonicIsIncorrectException implements Exception {
+  @override
+  String toString() =>
+      'Polygon mnemonic has incorrect format. Mnemonic should contain 12 or 24 words separated by space.';
+}

cw_polygon/lib/polygon_transaction_credentials.dart

@@ -0,0 +1,18 @@
+import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/output_info.dart';
+import 'package:cw_ethereum/ethereum_transaction_credentials.dart';
+import 'package:cw_polygon/polygon_transaction_priority.dart';
+
+class PolygonTransactionCredentials extends EthereumTransactionCredentials {
+  PolygonTransactionCredentials(
+    List<OutputInfo> outputs, {
+    required PolygonTransactionPriority? priority,
+    required CryptoCurrency currency,
+    final int? feeRate,
+  }) : super(
+          outputs,
+          currency: currency,
+          priority: priority,
+          feeRate: feeRate,
+        );
+}

cw_polygon/lib/polygon_transaction_history.dart

@@ -0,0 +1,77 @@
+import 'dart:convert';
+import 'dart:core';
+import 'package:cw_core/pathForWallet.dart';
+import 'package:cw_core/wallet_info.dart';
+import 'package:cw_ethereum/file.dart';
+import 'package:cw_polygon/polygon_transaction_info.dart';
+import 'package:mobx/mobx.dart';
+import 'package:cw_core/transaction_history.dart';
+
+part 'polygon_transaction_history.g.dart';
+
+const transactionsHistoryFileName = 'polygon_transactions.json';
+
+class PolygonTransactionHistory = PolygonTransactionHistoryBase with _$PolygonTransactionHistory;
+
+abstract class PolygonTransactionHistoryBase extends TransactionHistoryBase<PolygonTransactionInfo>
+    with Store {
+  PolygonTransactionHistoryBase({required this.walletInfo, required String password})
+      : _password = password {
+    transactions = ObservableMap<String, PolygonTransactionInfo>();
+  }
+
+  final WalletInfo walletInfo;
+  String _password;
+
+  Future<void> init() async => await _load();
+
+  @override
+  Future<void> save() async {
+    try {
+      final dirPath = await pathForWalletDir(name: walletInfo.name, type: walletInfo.type);
+      final path = '$dirPath/$transactionsHistoryFileName';
+      final data = json.encode({'transactions': transactions});
+      await writeData(path: path, password: _password, data: data);
+    } catch (e, s) {
+      print('Error while saving polygon  transaction history: ${e.toString()}');
+      print(s);
+    }
+  }
+
+  @override
+  void addOne(PolygonTransactionInfo transaction) => transactions[transaction.id] = transaction;
+
+  @override
+  void addMany(Map<String, PolygonTransactionInfo> transactions) =>
+      this.transactions.addAll(transactions);
+
+  Future<Map<String, dynamic>> _read() async {
+    final dirPath = await pathForWalletDir(name: walletInfo.name, type: walletInfo.type);
+    final path = '$dirPath/$transactionsHistoryFileName';
+    final content = await read(path: path, password: _password);
+    if (content.isEmpty) {
+      return {};
+    }
+    return json.decode(content) as Map<String, dynamic>;
+  }
+
+  Future<void> _load() async {
+    try {
+      final content = await _read();
+      final txs = content['transactions'] as Map<String, dynamic>? ?? {};
+
+      txs.entries.forEach((entry) {
+        final val = entry.value;
+
+        if (val is Map<String, dynamic>) {
+          final tx = PolygonTransactionInfo.fromJson(val);
+          _update(tx);
+        }
+      });
+    } catch (e) {
+      print(e);
+    }
+  }
+
+  void _update(PolygonTransactionInfo transaction) => transactions[transaction.id] = transaction;
+}

cw_polygon/lib/polygon_transaction_info.dart

@@ -0,0 +1,49 @@
+import 'package:cw_core/transaction_direction.dart';
+import 'package:cw_ethereum/ethereum_transaction_info.dart';
+
+class PolygonTransactionInfo extends EthereumTransactionInfo {
+  PolygonTransactionInfo({
+    required String id,
+    required int height,
+    required BigInt ethAmount,
+    int exponent = 18,
+    required TransactionDirection direction,
+    required DateTime date,
+    required bool isPending,
+    required BigInt ethFee,
+    required int confirmations,
+    String tokenSymbol = "MATIC",
+    required String? to,
+  }) : super(
+          confirmations: confirmations,
+          id: id,
+          height: height,
+          ethAmount: ethAmount,
+          exponent: exponent,
+          direction: direction,
+          date: date,
+          isPending: isPending,
+          ethFee: ethFee,
+          to: to,
+          tokenSymbol: tokenSymbol,
+        );
+
+  factory PolygonTransactionInfo.fromJson(Map<String, dynamic> data) {
+    return PolygonTransactionInfo(
+      id: data['id'] as String,
+      height: data['height'] as int,
+      ethAmount: BigInt.parse(data['amount']),
+      exponent: data['exponent'] as int,
+      ethFee: BigInt.parse(data['fee']),
+      direction: parseTransactionDirectionFromInt(data['direction'] as int),
+      date: DateTime.fromMillisecondsSinceEpoch(data['date'] as int),
+      isPending: data['isPending'] as bool,
+      confirmations: data['confirmations'] as int,
+      tokenSymbol: data['tokenSymbol'] as String,
+      to: data['to'],
+    );
+  }
+
+  @override
+  String feeFormatted() => '${(ethFee / BigInt.from(10).pow(18)).toString()} MATIC';
+}

cw_polygon/lib/polygon_transaction_model.dart

@@ -0,0 +1,49 @@
+import 'package:cw_ethereum/ethereum_transaction_model.dart';
+
+class PolygonTransactionModel extends EthereumTransactionModel {
+  PolygonTransactionModel({
+    required DateTime date,
+    required String hash,
+    required String from,
+    required String to,
+    required BigInt amount,
+    required int gasUsed,
+    required BigInt gasPrice,
+    required String contractAddress,
+    required int confirmations,
+    required int blockNumber,
+    required String? tokenSymbol,
+    required int? tokenDecimal,
+    required bool isError,
+  }) : super(
+          amount: amount,
+          date: date,
+          hash: hash,
+          from: from,
+          to: to,
+          gasPrice: gasPrice,
+          gasUsed: gasUsed,
+          confirmations: confirmations,
+          contractAddress: contractAddress,
+          blockNumber: blockNumber,
+          tokenDecimal: tokenDecimal,
+          tokenSymbol: tokenSymbol,
+          isError: isError,
+        );
+
+  factory PolygonTransactionModel.fromJson(Map<String, dynamic> json) => PolygonTransactionModel(
+        date: DateTime.fromMillisecondsSinceEpoch(int.parse(json["timeStamp"]) * 1000),
+        hash: json["hash"],
+        from: json["from"],
+        to: json["to"],
+        amount: BigInt.parse(json["value"]),
+        gasUsed: int.parse(json["gasUsed"]),
+        gasPrice: BigInt.parse(json["gasPrice"]),
+        contractAddress: json["contractAddress"],
+        confirmations: int.parse(json["confirmations"]),
+        blockNumber: int.parse(json["blockNumber"]),
+        tokenSymbol: json["tokenSymbol"] ?? "MATIC",
+        tokenDecimal: int.tryParse(json["tokenDecimal"] ?? ""),
+        isError: json["isError"] == "1",
+      );
+}

cw_polygon/lib/polygon_transaction_priority.dart

@@ -0,0 +1,51 @@
+import 'package:cw_ethereum/ethereum_transaction_priority.dart';
+
+class PolygonTransactionPriority extends EthereumTransactionPriority {
+  const PolygonTransactionPriority({required String title, required int raw, required int tip})
+      : super(title: title, raw: raw, tip: tip);
+
+  static const List<PolygonTransactionPriority> all = [fast, medium, slow];
+  static const PolygonTransactionPriority slow =
+      PolygonTransactionPriority(title: 'slow', raw: 0, tip: 1);
+  static const PolygonTransactionPriority medium =
+      PolygonTransactionPriority(title: 'Medium', raw: 1, tip: 2);
+  static const PolygonTransactionPriority fast =
+      PolygonTransactionPriority(title: 'Fast', raw: 2, tip: 4);
+
+  static PolygonTransactionPriority deserialize({required int raw}) {
+    switch (raw) {
+      case 0:
+        return slow;
+      case 1:
+        return medium;
+      case 2:
+        return fast;
+      default:
+        throw Exception('Unexpected token: $raw for PolygonTransactionPriority deserialize');
+    }
+  }
+
+  @override
+  String get units => 'gas';
+
+  @override
+  String toString() {
+    var label = '';
+
+    switch (this) {
+      case PolygonTransactionPriority.slow:
+        label = 'Slow';
+        break;
+      case PolygonTransactionPriority.medium:
+        label = 'Medium';
+        break;
+      case PolygonTransactionPriority.fast:
+        label = 'Fast';
+        break;
+      default:
+        break;
+    }
+
+    return label;
+  }
+}

cw_polygon/lib/polygon_wallet.dart

@@ -0,0 +1,540 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+import 'dart:math';
+
+import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/cake_hive.dart';
+import 'package:cw_core/node.dart';
+import 'package:cw_core/pathForWallet.dart';
+import 'package:cw_core/pending_transaction.dart';
+import 'package:cw_core/sync_status.dart';
+import 'package:cw_core/transaction_direction.dart';
+import 'package:cw_core/transaction_priority.dart';
+import 'package:cw_core/wallet_addresses.dart';
+import 'package:cw_core/wallet_base.dart';
+import 'package:cw_core/wallet_info.dart';
+import 'package:cw_ethereum/erc20_balance.dart';
+import 'package:cw_ethereum/ethereum_formatter.dart';
+import 'package:cw_ethereum/ethereum_transaction_model.dart';
+import 'package:cw_ethereum/file.dart';
+import 'package:cw_core/erc20_token.dart';
+import 'package:cw_polygon/default_erc20_tokens.dart';
+import 'package:cw_polygon/polygon_client.dart';
+import 'package:cw_polygon/polygon_exceptions.dart';
+import 'package:cw_polygon/polygon_formatter.dart';
+import 'package:cw_polygon/polygon_transaction_credentials.dart';
+import 'package:cw_polygon/polygon_transaction_history.dart';
+import 'package:cw_polygon/polygon_transaction_info.dart';
+import 'package:cw_polygon/polygon_transaction_model.dart';
+import 'package:cw_polygon/polygon_transaction_priority.dart';
+import 'package:cw_polygon/polygon_wallet_addresses.dart';
+import 'package:hive/hive.dart';
+import 'package:hex/hex.dart';
+import 'package:mobx/mobx.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:web3dart/crypto.dart';
+import 'package:web3dart/web3dart.dart';
+import 'package:bip39/bip39.dart' as bip39;
+import 'package:bip32/bip32.dart' as bip32;
+
+part 'polygon_wallet.g.dart';
+
+class PolygonWallet = PolygonWalletBase with _$PolygonWallet;
+
+abstract class PolygonWalletBase extends WalletBase<ERC20Balance,
+    PolygonTransactionHistory, PolygonTransactionInfo> with Store {
+  PolygonWalletBase({
+    required WalletInfo walletInfo,
+    String? mnemonic,
+    String? privateKey,
+    required String password,
+    ERC20Balance? initialBalance,
+  })  : syncStatus = NotConnectedSyncStatus(),
+        _password = password,
+        _mnemonic = mnemonic,
+        _hexPrivateKey = privateKey,
+        _isTransactionUpdating = false,
+        _client = PolygonClient(),
+        walletAddresses = PolygonWalletAddresses(walletInfo),
+        balance = ObservableMap<CryptoCurrency, ERC20Balance>.of({
+          CryptoCurrency.maticpoly: initialBalance ?? ERC20Balance(BigInt.zero)
+        }),
+        super(walletInfo) {
+    this.walletInfo = walletInfo;
+    transactionHistory =
+        PolygonTransactionHistory(walletInfo: walletInfo, password: password);
+
+    if (!CakeHive.isAdapterRegistered(Erc20Token.typeId)) {
+      CakeHive.registerAdapter(Erc20TokenAdapter());
+    }
+
+    _sharedPrefs.complete(SharedPreferences.getInstance());
+  }
+
+  final String? _mnemonic;
+  final String? _hexPrivateKey;
+  final String _password;
+
+  late final Box<Erc20Token> polygonErc20TokensBox;
+
+  late final EthPrivateKey _polygonPrivateKey;
+
+  EthPrivateKey get polygonPrivateKey => _polygonPrivateKey;
+
+  late PolygonClient _client;
+
+  int? _gasPrice;
+  int? _estimatedGas;
+  bool _isTransactionUpdating;
+
+  // TODO: remove after integrating our own node and having eth_newPendingTransactionFilter
+  Timer? _transactionsUpdateTimer;
+
+  @override
+  WalletAddresses walletAddresses;
+
+  @override
+  @observable
+  SyncStatus syncStatus;
+
+  @override
+  @observable
+  late ObservableMap<CryptoCurrency, ERC20Balance> balance;
+
+  Completer<SharedPreferences> _sharedPrefs = Completer();
+
+  Future<void> init() async {
+    polygonErc20TokensBox =
+        await CakeHive.openBox<Erc20Token>(Erc20Token.polygonBoxName);
+    await walletAddresses.init();
+    await transactionHistory.init();
+    _polygonPrivateKey = await getPrivateKey(
+      mnemonic: _mnemonic,
+      privateKey: _hexPrivateKey,
+      password: _password,
+    );
+    walletAddresses.address = _polygonPrivateKey.address.toString();
+    await save();
+  }
+
+  @override
+  int calculateEstimatedFee(TransactionPriority priority, int? amount) {
+    try {
+      if (priority is PolygonTransactionPriority) {
+        final priorityFee =
+            EtherAmount.fromInt(EtherUnit.gwei, priority.tip).getInWei.toInt();
+        return (_gasPrice! + priorityFee) * (_estimatedGas ?? 0);
+      }
+
+      return 0;
+    } catch (e) {
+      return 0;
+    }
+  }
+
+  @override
+  Future<void> changePassword(String password) {
+    throw UnimplementedError("changePassword");
+  }
+
+  @override
+  void close() {
+    _client.stop();
+    _transactionsUpdateTimer?.cancel();
+  }
+
+  @action
+  @override
+  Future<void> connectToNode({required Node node}) async {
+    try {
+      syncStatus = ConnectingSyncStatus();
+
+      final isConnected = _client.connect(node);
+
+      if (!isConnected) {
+        throw Exception("Polygon Node connection failed");
+      }
+
+      _client.setListeners(_polygonPrivateKey.address, _onNewTransaction);
+
+      _setTransactionUpdateTimer();
+
+      syncStatus = ConnectedSyncStatus();
+    } catch (e) {
+      syncStatus = FailedSyncStatus();
+    }
+  }
+
+  @override
+  Future<PendingTransaction> createTransaction(Object credentials) async {
+    final _credentials = credentials as PolygonTransactionCredentials;
+    final outputs = _credentials.outputs;
+    final hasMultiDestination = outputs.length > 1;
+
+    final CryptoCurrency transactionCurrency = balance.keys
+        .firstWhere((element) => element.title == _credentials.currency.title);
+
+    final _erc20Balance = balance[transactionCurrency]!;
+    BigInt totalAmount = BigInt.zero;
+    int exponent =
+        transactionCurrency is Erc20Token ? transactionCurrency.decimal : 18;
+    num amountToPolygonMultiplier = pow(10, exponent);
+
+    // so far this can not be made with Polygon as Polygon does not support multiple recipients
+    if (hasMultiDestination) {
+      if (outputs.any(
+          (item) => item.sendAll || (item.formattedCryptoAmount ?? 0) <= 0)) {
+        throw PolygonTransactionCreationException(transactionCurrency);
+      }
+
+      final totalOriginalAmount = PolygonFormatter.parsePolygonAmountToDouble(
+          outputs.fold(
+              0, (acc, value) => acc + (value.formattedCryptoAmount ?? 0)));
+      totalAmount =
+          BigInt.from(totalOriginalAmount * amountToPolygonMultiplier);
+
+      if (_erc20Balance.balance < totalAmount) {
+        throw PolygonTransactionCreationException(transactionCurrency);
+      }
+    } else {
+      final output = outputs.first;
+      // since the fees are taken from Ethereum
+      // then no need to subtract the fees from the amount if send all
+      final BigInt allAmount;
+      if (transactionCurrency is Erc20Token) {
+        allAmount = _erc20Balance.balance;
+      } else {
+        allAmount = _erc20Balance.balance -
+            BigInt.from(calculateEstimatedFee(_credentials.priority!, null));
+      }
+      final totalOriginalAmount = EthereumFormatter.parseEthereumAmountToDouble(
+          output.formattedCryptoAmount ?? 0);
+      totalAmount = output.sendAll
+          ? allAmount
+          : BigInt.from(totalOriginalAmount * amountToPolygonMultiplier);
+
+      if (_erc20Balance.balance < totalAmount) {
+        throw PolygonTransactionCreationException(transactionCurrency);
+      }
+    }
+
+    final pendingPolygonTransaction = await _client.signTransaction(
+      privateKey: _polygonPrivateKey,
+      toAddress: _credentials.outputs.first.isParsedAddress
+          ? _credentials.outputs.first.extractedAddress!
+          : _credentials.outputs.first.address,
+      amount: totalAmount.toString(),
+      gas: _estimatedGas!,
+      priority: _credentials.priority!,
+      currency: transactionCurrency,
+      exponent: exponent,
+      contractAddress: transactionCurrency is Erc20Token
+          ? transactionCurrency.contractAddress
+          : null,
+    );
+
+    return pendingPolygonTransaction;
+  }
+
+  Future<void> _updateTransactions() async {
+    try {
+      if (_isTransactionUpdating) {
+        return;
+      }
+      bool isPolygonScanEnabled = (await _sharedPrefs.future).getBool("use_polygonscan") ?? true;
+      if (!isPolygonScanEnabled) {
+        return;
+      }
+
+      _isTransactionUpdating = true;
+      final transactions = await fetchTransactions();
+      transactionHistory.addMany(transactions);
+      await transactionHistory.save();
+      _isTransactionUpdating = false;
+    } catch (_) {
+      _isTransactionUpdating = false;
+    }
+  }
+
+  @override
+  Future<Map<String, PolygonTransactionInfo>> fetchTransactions() async {
+    final address = _polygonPrivateKey.address.hex;
+    final transactions = await _client.fetchTransactions(address);
+
+    final List<Future<List<PolygonTransactionModel>>> polygonErc20TokensTransactions =
+        [];
+
+    for (var token in balance.keys) {
+      if (token is Erc20Token) {
+        polygonErc20TokensTransactions.add(_client.fetchTransactions(
+          address,
+          contractAddress: token.contractAddress,
+        ) as Future<List<PolygonTransactionModel>>);
+      }
+    }
+
+    final tokensTransaction = await Future.wait(polygonErc20TokensTransactions);
+    transactions.addAll(tokensTransaction.expand((element) => element));
+
+    final Map<String, PolygonTransactionInfo> result = {};
+
+    for (var transactionModel in transactions) {
+      if (transactionModel.isError) {
+        continue;
+      }
+
+      result[transactionModel.hash] = PolygonTransactionInfo(
+        id: transactionModel.hash,
+        height: transactionModel.blockNumber,
+        ethAmount: transactionModel.amount,
+        direction: transactionModel.from == address
+            ? TransactionDirection.outgoing
+            : TransactionDirection.incoming,
+        isPending: false,
+        date: transactionModel.date,
+        confirmations: transactionModel.confirmations,
+        ethFee:
+            BigInt.from(transactionModel.gasUsed) * transactionModel.gasPrice,
+        exponent: transactionModel.tokenDecimal ?? 18,
+        tokenSymbol: transactionModel.tokenSymbol ?? "MATIC",
+        to: transactionModel.to,
+      );
+    }
+
+    return result;
+  }
+
+  @override
+  Object get keys => throw UnimplementedError("keys");
+
+  @override
+  Future<void> rescan({required int height}) {
+    throw UnimplementedError("rescan");
+  }
+
+  @override
+  Future<void> save() async {
+    await walletAddresses.updateAddressesInBox();
+    final path = await makePath();
+    await write(path: path, password: _password, data: toJSON());
+    await transactionHistory.save();
+  }
+
+  @override
+  String? get seed => _mnemonic;
+
+  @override
+  String get privateKey => HEX.encode(_polygonPrivateKey.privateKey);
+
+  @action
+  @override
+  Future<void> startSync() async {
+    try {
+      syncStatus = AttemptingSyncStatus();
+      await _updateBalance();
+      await _updateTransactions();
+      _gasPrice = await _client.getGasUnitPrice();
+      _estimatedGas = await _client.getEstimatedGas();
+
+      Timer.periodic(const Duration(minutes: 1),
+          (timer) async => _gasPrice = await _client.getGasUnitPrice());
+      Timer.periodic(const Duration(seconds: 10),
+          (timer) async => _estimatedGas = await _client.getEstimatedGas());
+
+      syncStatus = SyncedSyncStatus();
+    } catch (e) {
+      syncStatus = FailedSyncStatus();
+    }
+  }
+
+  Future<String> makePath() async =>
+      pathForWallet(name: walletInfo.name, type: walletInfo.type);
+
+  String toJSON() => json.encode({
+        'mnemonic': _mnemonic,
+        'private_key': privateKey,
+        'balance': balance[currency]!.toJSON(),
+      });
+
+  static Future<PolygonWallet> open({
+    required String name,
+    required String password,
+    required WalletInfo walletInfo,
+  }) async {
+    final path = await pathForWallet(name: name, type: walletInfo.type);
+    final jsonSource = await read(path: path, password: password);
+    final data = json.decode(jsonSource) as Map;
+    final mnemonic = data['mnemonic'] as String?;
+    final privateKey = data['private_key'] as String?;
+    final balance = ERC20Balance.fromJSON(data['balance'] as String) ??
+        ERC20Balance(BigInt.zero);
+
+    return PolygonWallet(
+      walletInfo: walletInfo,
+      password: password,
+      mnemonic: mnemonic,
+      privateKey: privateKey,
+      initialBalance: balance,
+    );
+  }
+
+  Future<void> _updateBalance() async {
+    balance[currency] = await _fetchMaticBalance();
+
+    await _fetchErc20Balances();
+    await save();
+  }
+
+  Future<ERC20Balance> _fetchMaticBalance() async {
+    final balance = await _client.getBalance(_polygonPrivateKey.address);
+    return ERC20Balance(balance.getInWei);
+  }
+
+  Future<void> _fetchErc20Balances() async {
+    for (var token in polygonErc20TokensBox.values) {
+      try {
+        if (token.enabled) {
+          balance[token] = await _client.fetchERC20Balances(
+            _polygonPrivateKey.address,
+            token.contractAddress,
+          );
+        } else {
+          balance.remove(token);
+        }
+      } catch (_) {}
+    }
+  }
+
+  Future<EthPrivateKey> getPrivateKey(
+      {String? mnemonic, String? privateKey, required String password}) async {
+    assert(mnemonic != null || privateKey != null);
+
+    if (privateKey != null) {
+      return EthPrivateKey.fromHex(privateKey);
+    }
+
+    final seed = bip39.mnemonicToSeed(mnemonic!);
+
+    final root = bip32.BIP32.fromSeed(seed);
+
+    const _hdPathPolygon = "m/44'/60'/0'/0";
+    const index = 0;
+    final addressAtIndex = root.derivePath("$_hdPathPolygon/$index");
+
+    return EthPrivateKey.fromHex(
+        HEX.encode(addressAtIndex.privateKey as List<int>));
+  }
+
+  Future<void>? updateBalance() async => await _updateBalance();
+
+  List<Erc20Token> get erc20Currencies => polygonErc20TokensBox.values.toList();
+
+  Future<void> addErc20Token(Erc20Token token) async {
+    String? iconPath;
+    try {
+      iconPath = CryptoCurrency.all
+          .firstWhere((element) =>
+              element.title.toUpperCase() == token.symbol.toUpperCase())
+          .iconPath;
+    } catch (_) {}
+
+    final _token = Erc20Token(
+      name: token.name,
+      symbol: token.symbol,
+      contractAddress: token.contractAddress,
+      decimal: token.decimal,
+      enabled: token.enabled,
+      iconPath: iconPath,
+    );
+
+    await polygonErc20TokensBox.put(_token.contractAddress, _token);
+
+    if (_token.enabled) {
+      balance[_token] = await _client.fetchERC20Balances(
+        _polygonPrivateKey.address,
+        _token.contractAddress,
+      );
+    } else {
+      balance.remove(_token);
+    }
+  }
+
+  Future<void> deleteErc20Token(Erc20Token token) async {
+    await token.delete();
+
+    balance.remove(token);
+    _updateBalance();
+  }
+
+  Future<Erc20Token?> getErc20Token(String contractAddress) async =>
+      await _client.getErc20Token(contractAddress);
+
+  void _onNewTransaction() {
+    _updateBalance();
+    _updateTransactions();
+  }
+
+  void addInitialTokens() {
+    final initialErc20Tokens =
+        DefaultPolygonErc20Tokens().initialPolygonErc20Tokens;
+
+    for (var token in initialErc20Tokens) {
+      polygonErc20TokensBox.put(token.contractAddress, token);
+    }
+  }
+
+  @override
+  Future<void> renameWalletFiles(String newWalletName) async {
+    final currentWalletPath =
+        await pathForWallet(name: walletInfo.name, type: type);
+    final currentWalletFile = File(currentWalletPath);
+
+    final currentDirPath =
+        await pathForWalletDir(name: walletInfo.name, type: type);
+    final currentTransactionsFile =
+        File('$currentDirPath/$transactionsHistoryFileName');
+
+    // Copies current wallet files into new wallet name's dir and files
+    if (currentWalletFile.existsSync()) {
+      final newWalletPath =
+          await pathForWallet(name: newWalletName, type: type);
+      await currentWalletFile.copy(newWalletPath);
+    }
+    if (currentTransactionsFile.existsSync()) {
+      final newDirPath =
+          await pathForWalletDir(name: newWalletName, type: type);
+      await currentTransactionsFile
+          .copy('$newDirPath/$transactionsHistoryFileName');
+    }
+
+    // Delete old name's dir and files
+    await Directory(currentDirPath).delete(recursive: true);
+  }
+
+  void _setTransactionUpdateTimer() {
+    if (_transactionsUpdateTimer?.isActive ?? false) {
+      _transactionsUpdateTimer!.cancel();
+    }
+
+    _transactionsUpdateTimer = Timer.periodic(Duration(seconds: 10), (_) {
+      _updateTransactions();
+      _updateBalance();
+    });
+  }
+
+  void updatePolygonScanUsageState(bool isEnabled) {
+    if (isEnabled) {
+      _updateTransactions();
+      _setTransactionUpdateTimer();
+    } else {
+      _transactionsUpdateTimer?.cancel();
+    }
+  }
+
+  @override
+  String signMessage(String message, {String? address = null}) => bytesToHex(
+      _polygonPrivateKey.signPersonalMessageToUint8List(ascii.encode(message)));
+
+  Web3Client? getWeb3Client() => _client.getWeb3Client();
+}

cw_polygon/lib/polygon_wallet_addresses.dart

@@ -0,0 +1,5 @@
+import 'package:cw_ethereum/ethereum_wallet_addresses.dart';
+
+class PolygonWalletAddresses extends EthereumWalletAddresses {
+  PolygonWalletAddresses(super.walletInfo);
+}

cw_polygon/lib/polygon_wallet_creation_credentials.dart

@@ -0,0 +1,28 @@
+import 'package:cw_core/wallet_credentials.dart';
+import 'package:cw_core/wallet_info.dart';
+class PolygonNewWalletCredentials extends WalletCredentials {
+  PolygonNewWalletCredentials({required String name, WalletInfo? walletInfo})
+      : super(name: name, walletInfo: walletInfo);
+}
+
+class PolygonRestoreWalletFromSeedCredentials extends WalletCredentials {
+  PolygonRestoreWalletFromSeedCredentials(
+      {required String name,
+      required String password,
+      required this.mnemonic,
+      WalletInfo? walletInfo})
+      : super(name: name, password: password, walletInfo: walletInfo);
+
+  final String mnemonic;
+}
+
+class PolygonRestoreWalletFromPrivateKey extends WalletCredentials {
+  PolygonRestoreWalletFromPrivateKey(
+      {required String name,
+      required String password,
+      required this.privateKey,
+      WalletInfo? walletInfo})
+      : super(name: name, password: password, walletInfo: walletInfo);
+
+  final String privateKey;
+}

cw_polygon/lib/polygon_wallet_service.dart

@@ -0,0 +1,123 @@
+import 'dart:io';
+
+import 'package:cw_core/pathForWallet.dart';
+import 'package:cw_core/wallet_base.dart';
+import 'package:cw_core/wallet_info.dart';
+import 'package:cw_core/wallet_service.dart';
+import 'package:cw_core/wallet_type.dart';
+import 'package:cw_ethereum/ethereum_mnemonics.dart';
+import 'package:cw_polygon/polygon_wallet.dart';
+import 'package:bip39/bip39.dart' as bip39;
+import 'package:hive/hive.dart';
+import 'polygon_wallet_creation_credentials.dart';
+import 'package:collection/collection.dart';
+
+class PolygonWalletService extends WalletService<PolygonNewWalletCredentials,
+    PolygonRestoreWalletFromSeedCredentials, PolygonRestoreWalletFromPrivateKey> {
+  PolygonWalletService(this.walletInfoSource);
+
+  final Box<WalletInfo> walletInfoSource;
+
+  @override
+  Future<PolygonWallet> create(PolygonNewWalletCredentials credentials) async {
+    final strength = (credentials.seedPhraseLength == 12)
+        ? 128
+        : (credentials.seedPhraseLength == 24)
+            ? 256
+            : 128;
+
+    final mnemonic = bip39.generateMnemonic(strength: strength);
+    final wallet = PolygonWallet(
+      walletInfo: credentials.walletInfo!,
+      mnemonic: mnemonic,
+      password: credentials.password!,
+    );
+
+    await wallet.init();
+    wallet.addInitialTokens();
+    await wallet.save();
+
+    return wallet;
+  }
+
+  @override
+  WalletType getType() => WalletType.polygon;
+
+  @override
+  Future<bool> isWalletExit(String name) async =>
+      File(await pathForWallet(name: name, type: getType())).existsSync();
+
+  @override
+  Future<PolygonWallet> openWallet(String name, String password) async {
+    final walletInfo =
+        walletInfoSource.values.firstWhere((info) => info.id == WalletBase.idFor(name, getType()));
+    final wallet = await PolygonWalletBase.open(
+      name: name,
+      password: password,
+      walletInfo: walletInfo,
+    );
+
+    await wallet.init();
+    await wallet.save();
+
+    return wallet;
+  }
+
+  @override
+  Future<void> remove(String wallet) async {
+    File(await pathForWalletDir(name: wallet, type: getType())).delete(recursive: true);
+    final walletInfo = walletInfoSource.values
+        .firstWhereOrNull((info) => info.id == WalletBase.idFor(wallet, getType()))!;
+    await walletInfoSource.delete(walletInfo.key);
+  }
+
+  @override
+  Future<PolygonWallet> restoreFromKeys(PolygonRestoreWalletFromPrivateKey credentials) async {
+    final wallet = PolygonWallet(
+      password: credentials.password!,
+      privateKey: credentials.privateKey,
+      walletInfo: credentials.walletInfo!,
+    );
+
+    await wallet.init();
+    wallet.addInitialTokens();
+    await wallet.save();
+
+    return wallet;
+  }
+
+  @override
+  Future<PolygonWallet> restoreFromSeed(PolygonRestoreWalletFromSeedCredentials credentials) async {
+    if (!bip39.validateMnemonic(credentials.mnemonic)) {
+      throw EthereumMnemonicIsIncorrectException();
+    }
+
+    final wallet = PolygonWallet(
+      password: credentials.password!,
+      mnemonic: credentials.mnemonic,
+      walletInfo: credentials.walletInfo!,
+    );
+
+    await wallet.init();
+    wallet.addInitialTokens();
+    await wallet.save();
+
+    return wallet;
+  }
+
+  @override
+  Future<void> rename(String currentName, String password, String newName) async {
+    final currentWalletInfo = walletInfoSource.values
+        .firstWhere((info) => info.id == WalletBase.idFor(currentName, getType()));
+    final currentWallet = await PolygonWalletBase.open(
+        password: password, name: currentName, walletInfo: currentWalletInfo);
+
+    await currentWallet.renameWalletFiles(newName);
+
+    final newWalletInfo = currentWalletInfo;
+    newWalletInfo.id = WalletBase.idFor(newName, getType());
+    newWalletInfo.name = newName;
+
+    await walletInfoSource.put(currentWalletInfo.key, newWalletInfo);
+  }
+}

cw_polygon/pubspec.yaml

@@ -0,0 +1,73 @@
+name: cw_polygon
+description: A new Flutter package project.
+version: 0.0.1
+publish_to: none
+author: Cake Wallet
+homepage: https://cakewallet.com
+
+environment:
+  sdk: '>=3.0.6 <4.0.0'
+  flutter: ">=1.17.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  cw_core:
+    path: ../cw_core
+  cw_ethereum:
+    path: ../cw_ethereum
+  mobx: ^2.0.7+4
+  intl: ^0.18.0
+  bip39: ^1.0.6
+  hive: ^2.2.3
+  collection: ^1.17.1
+  web3dart: ^2.7.1
+  bip32: ^2.0.0
+  hex: ^0.2.0
+  shared_preferences: ^2.0.15
+
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^2.0.0
+  build_runner: ^2.1.11
+  mobx_codegen: ^2.0.7
+  hive_generator: ^1.1.3
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter packages.
+flutter:
+
+  # To add assets to your package, add an assets section, like this:
+  # assets:
+  #   - images/a_dot_burr.jpeg
+  #   - images/a_dot_ham.jpeg
+  #
+  # For details regarding assets in packages, see
+  # https://flutter.dev/assets-and-images/#from-packages
+  #
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.dev/assets-and-images/#resolution-aware
+
+  # To add custom fonts to your package, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts in packages, see
+  # https://flutter.dev/custom-fonts/#from-packages

cw_polygon/test/cw_polygon_test.dart

@@ -0,0 +1,12 @@
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:cw_polygon/cw_polygon.dart';
+
+void main() {
+  test('adds one to input values', () {
+    final calculator = Calculator();
+    expect(calculator.addOne(2), 3);
+    expect(calculator.addOne(-7), -6);
+    expect(calculator.addOne(0), 1);
+  });
+}

ios/Runner/InfoBase.plist

@@ -160,6 +160,26 @@
                 <string>bitcoincash-wallet</string>
             </array>
         </dict>
+        <dict>
+            <key>CFBundleTypeRole</key>
+            <string>Editor</string>
+            <key>CFBundleURLName</key>
+            <string>polygon</string>
+            <key>CFBundleURLSchemes</key>
+            <array>
+                <string>polygon</string>
+            </array>
+        </dict>
+        <dict>
+            <key>CFBundleTypeRole</key>
+            <string>Viewer</string>
+            <key>CFBundleURLName</key>
+            <string>polygon-wallet</string>
+            <key>CFBundleURLSchemes</key>
+            <array>
+                <string>polygon-wallet</string>
+            </array>
+        </dict>
     </array>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>

lib/core/address_validator.dart

@@ -271,6 +271,8 @@ class AddressValidator extends TextValidator {
             '|([^0-9a-zA-Z]|^)ltc[a-zA-Z0-9]{26,45}([^0-9a-zA-Z]|\$)';
       case CryptoCurrency.eth:
         return '0x[0-9a-zA-Z]{42}';
+      case CryptoCurrency.maticpoly:
+        return '0x[0-9a-zA-Z]{42}';
       case CryptoCurrency.nano:
         return 'nano_[0-9a-zA-Z]{60}';
       case CryptoCurrency.banano:

lib/core/fiat_conversion_service.dart

@@ -16,7 +16,7 @@ Future<double> _fetchPrice(Map<String, dynamic> args) async {
 
   final Map<String, String> queryParams = {
     'interval_count': '1',
-    'base': crypto,
+    'base': crypto.split(".").first,
     'quote': fiat,
     'key': secrets.fiatApiKey,
   };

lib/core/seed_validator.dart

@@ -3,6 +3,7 @@ import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/haven/haven.dart';
 import 'package:cake_wallet/core/validator.dart';
 import 'package:cake_wallet/entities/mnemonic_item.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cw_core/wallet_type.dart';
 import 'package:cake_wallet/monero/monero.dart';
 import 'package:cake_wallet/nano/nano.dart';
@@ -34,6 +35,8 @@ class SeedValidator extends Validator<MnemonicItem> {
       case WalletType.nano:
       case WalletType.banano:
         return nano!.getNanoWordList(language);
+      case WalletType.polygon:
+        return polygon!.getPolygonWordList(language);
       default:
         return [];
     }

lib/core/wallet_connect/evm_chain_service.dart

@@ -6,6 +6,7 @@ import 'package:cake_wallet/core/wallet_connect/eth_transaction_model.dart';
 import 'package:cake_wallet/core/wallet_connect/evm_chain_id.dart';
 import 'package:cake_wallet/core/wallet_connect/wc_bottom_sheet_service.dart';
 import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/message_display_widget.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/core/wallet_connect/models/chain_key_model.dart';
@@ -14,7 +15,6 @@ import 'package:cake_wallet/src/screens/wallet_connect/widgets/connection_widget
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/modals/web3_request_modal.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/utils/string_parsing.dart';
 import 'package:convert/convert.dart';
-import 'package:cw_core/wallet_type.dart';
 import 'package:eth_sig_util/eth_sig_util.dart';
 import 'package:eth_sig_util/util/utils.dart';
 import 'package:http/http.dart' as http;
@@ -46,13 +46,12 @@ class EvmChainServiceImpl implements ChainService {
     required this.wcKeyService,
     required this.bottomSheetService,
     required this.wallet,
-    Web3Client? ethClient,
+    Web3Client? web3Client,
-  }) : ethClient = ethClient ??
+  }) : ethClient = web3Client ??
             Web3Client(
-              appStore.settingsStore.getCurrentNode(WalletType.ethereum).uri.toString(),
+              appStore.settingsStore.getCurrentNode(appStore.wallet!.type).uri.toString(),
               http.Client(),
             ) {
- 
     for (final String event in getEvents()) {
       wallet.registerEventEmitter(chainId: getChainId(), event: event);
     }
@@ -138,7 +137,8 @@ class EvmChainServiceImpl implements ChainService {
 
     try {
       // Load the private key
-      final List<ChainKeyModel> keys = wcKeyService.getKeysForChain(getChainId());
+      final List<ChainKeyModel> keys = wcKeyService
+          .getKeysForChain(getChainNameSpaceAndIdBasedOnWalletType(appStore.wallet!.type));
 
       final Credentials credentials = EthPrivateKey.fromHex(keys[0].privateKey);
 
@@ -176,13 +176,15 @@ class EvmChainServiceImpl implements ChainService {
 
     try {
       // Load the private key
-      final List<ChainKeyModel> keys = wcKeyService.getKeysForChain(getChainId());
+      final List<ChainKeyModel> keys = wcKeyService
+          .getKeysForChain(getChainNameSpaceAndIdBasedOnWalletType(appStore.wallet!.type));
 
       final EthPrivateKey credentials = EthPrivateKey.fromHex(keys[0].privateKey);
 
       final String signature = hex.encode(
         credentials.signPersonalMessageToUint8List(
           Uint8List.fromList(utf8.encode(message)),
+          chainId: getChainIdBasedOnWalletType(appStore.wallet!.type),
         ),
       );
       log(signature);
@@ -212,7 +214,8 @@ class EvmChainServiceImpl implements ChainService {
     }
 
     // Load the private key
-    final List<ChainKeyModel> keys = wcKeyService.getKeysForChain(getChainId());
+    final List<ChainKeyModel> keys = wcKeyService
+        .getKeysForChain(getChainNameSpaceAndIdBasedOnWalletType(appStore.wallet!.type));
 
     final Credentials credentials = EthPrivateKey.fromHex(keys[0].privateKey);
 
@@ -232,7 +235,11 @@ class EvmChainServiceImpl implements ChainService {
     );
 
     try {
-      final result = await ethClient.sendTransaction(credentials, transaction);
+      final result = await ethClient.sendTransaction(
+        credentials,
+        transaction,
+        chainId: getChainIdBasedOnWalletType(appStore.wallet!.type),
+      );
 
       log('Result: $result');
 
@@ -267,7 +274,8 @@ class EvmChainServiceImpl implements ChainService {
       return authError;
     }
 
-    final List<ChainKeyModel> keys = wcKeyService.getKeysForChain(getChainId());
+    final List<ChainKeyModel> keys = wcKeyService
+        .getKeysForChain(getChainNameSpaceAndIdBasedOnWalletType(appStore.wallet!.type));
 
     return EthSigUtil.signTypedData(
       privateKey: keys[0].privateKey,

lib/core/wallet_connect/wallet_connect_key_service.dart

@@ -1,9 +1,11 @@
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/core/wallet_connect/models/chain_key_model.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cw_core/balance.dart';
 import 'package:cw_core/transaction_history.dart';
 import 'package:cw_core/transaction_info.dart';
 import 'package:cw_core/wallet_base.dart';
+import 'package:cw_core/wallet_type.dart';
 
 abstract class WalletConnectKeyService {
   /// Returns a list of all the keys.
@@ -32,16 +34,36 @@ class KeyServiceImpl implements WalletConnectKeyService {
               'eip155:42161',
               'eip155:80001',
             ],
-            privateKey: ethereum!.getPrivateKey(wallet),
+            privateKey: _getPrivateKeyForWallet(wallet),
-            publicKey: ethereum!.getPublicKey(wallet),
+            publicKey: _getPublicKeyForWallet(wallet),
           ),
-          
         ];
 
   late final WalletBase<Balance, TransactionHistoryBase<TransactionInfo>, TransactionInfo> wallet;
 
   late final List<ChainKeyModel> _keys;
 
+  static String _getPrivateKeyForWallet(WalletBase wallet) {
+    switch (wallet.type) {
+      case WalletType.ethereum:
+        return ethereum!.getPrivateKey(wallet);
+      case WalletType.polygon:
+        return polygon!.getPrivateKey(wallet);
+      default:
+        return '';
+    }
+  }
+
+  static String _getPublicKeyForWallet(WalletBase wallet) {
+    switch (wallet.type) {
+      case WalletType.ethereum:
+        return ethereum!.getPublicKey(wallet);
+      case WalletType.polygon:
+        return polygon!.getPublicKey(wallet);
+      default:
+        return '';
+    }
+  }
   @override
   List<String> getChains() {
     final List<String> chainIds = [];

lib/core/wallet_connect/web3wallet_service.dart

@@ -9,6 +9,7 @@ import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/core/wallet_connect/models/auth_request_model.dart';
 import 'package:cake_wallet/core/wallet_connect/models/chain_key_model.dart';
 import 'package:cake_wallet/core/wallet_connect/models/session_request_model.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/connection_request_widget.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/message_display_widget.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/modals/web3_request_modal.dart';
@@ -164,8 +165,10 @@ abstract class Web3WalletServiceBase with Store {
 
   void _onSessionProposal(SessionProposalEvent? args) async {
     if (args != null) {
+      final chaindIdNamespace = getChainNameSpaceAndIdBasedOnWalletType(appStore.wallet!.type);
       final Widget modalWidget = Web3RequestModal(
         child: ConnectionRequestWidget(
+          chaindIdNamespace: chaindIdNamespace,
           wallet: _web3Wallet,
           sessionProposal: SessionRequestModel(request: args.params),
         ),
@@ -232,12 +235,13 @@ abstract class Web3WalletServiceBase with Store {
   @action
   Future<void> _onAuthRequest(AuthRequest? args) async {
     if (args != null) {
-      List<ChainKeyModel> chainKeys = walletKeyService.getKeysForChain('eip155:1');
+      final chaindIdNamespace = getChainNameSpaceAndIdBasedOnWalletType(appStore.wallet!.type);
+      List<ChainKeyModel> chainKeys = walletKeyService.getKeysForChain(chaindIdNamespace);
       // Create the message to be signed
-      final String iss = 'did:pkh:eip155:1:${chainKeys.first.publicKey}';
+      final String iss = 'did:pkh:$chaindIdNamespace:${chainKeys.first.publicKey}';
-
       final Widget modalWidget = Web3RequestModal(
         child: ConnectionRequestWidget(
+          chaindIdNamespace: chaindIdNamespace,
           wallet: _web3Wallet,
           authRequest: AuthRequestModel(iss: iss, request: args),
         ),

lib/di.dart

@@ -18,6 +18,8 @@ import 'package:cake_wallet/nano/nano.dart';
 import 'package:cake_wallet/ionia/ionia_anypay.dart';
 import 'package:cake_wallet/ionia/ionia_gift_card.dart';
 import 'package:cake_wallet/ionia/ionia_tip.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/src/screens/anonpay_details/anonpay_details_page.dart';
 import 'package:cake_wallet/src/screens/buy/buy_options_page.dart';
@@ -750,7 +752,7 @@ Future<void> setup({
     final wallet = getIt.get<AppStore>().wallet;
     return ConnectionSyncPage(
       getIt.get<DashboardViewModel>(),
-      wallet?.type == WalletType.ethereum ? getIt.get<Web3WalletService>() : null,
+      isEVMCompatibleChain(wallet!.type) ? getIt.get<Web3WalletService>() : null,
     );
   });
 
@@ -847,6 +849,8 @@ Future<void> setup({
             .createBitcoinCashWalletService(_walletInfoSource, _unspentCoinsInfoSource!);
       case WalletType.nano:
         return nano!.createNanoWalletService(_walletInfoSource);
+      case WalletType.polygon:
+        return polygon!.createPolygonWalletService(_walletInfoSource);
       default:
         throw Exception('Unexpected token: ${param1.toString()} for generating of WalletService');
     }

lib/entities/default_settings_migration.dart

@@ -27,6 +27,7 @@ const cakeWalletBitcoinElectrumUri = 'electrum.cakewallet.com:50002';
 const cakeWalletLitecoinElectrumUri = 'ltc-electrum.cakewallet.com:50002';
 const havenDefaultNodeUri = 'nodes.havenprotocol.org:443';
 const ethereumDefaultNodeUri = 'ethereum.publicnode.com';
+const polygonDefaultNodeUri = 'polygon-bor.publicnode.com';
 const cakeWalletBitcoinCashDefaultNodeUri = 'bitcoincash.stackwallet.com:50002';
 const nanoDefaultNodeUri = 'rpc.nano.to';
 const nanoDefaultPowNodeUri = 'rpc.nano.to';
@@ -65,6 +66,8 @@ Future<void> defaultSettingsMigration(
   final migrationVersions =
       List<int>.generate(migrationVersionsLength, (i) => currentVersion + (i + 1));
 
+  /// When you add a new case, increase the initialMigrationVersion parameter in the main.dart file.
+  /// This ensures that this switch case runs the newly added case.
   await Future.forEach(migrationVersions, (int version) async {
     try {
       switch (version) {
@@ -175,6 +178,11 @@ Future<void> defaultSettingsMigration(
           await changeBitcoinCurrentElectrumServerToDefault(
               sharedPreferences: sharedPreferences, nodes: nodes);
           break;
+        case 24:
+          await addPolygonNodeList(nodes: nodes);
+          await changePolygonCurrentNodeToDefault(
+              sharedPreferences: sharedPreferences, nodes: nodes);
+          break;
         case 25:
           await rewriteSecureStoragePin(secureStorage: secureStorage);
           break;
@@ -332,6 +340,11 @@ Node? getEthereumDefaultNode({required Box<Node> nodes}) {
       nodes.values.firstWhereOrNull((node) => node.type == WalletType.ethereum);
 }
 
+Node? getPolygonDefaultNode({required Box<Node> nodes}) {
+  return nodes.values.firstWhereOrNull((Node node) => node.uriRaw == polygonDefaultNodeUri) ??
+      nodes.values.firstWhereOrNull((node) => node.type == WalletType.polygon);
+}
+
 Node? getNanoDefaultNode({required Box<Node> nodes}) {
   return nodes.values.firstWhereOrNull((Node node) => node.uriRaw == nanoDefaultNodeUri) ??
       nodes.values.firstWhereOrNull((node) => node.type == WalletType.nano);
@@ -575,6 +588,7 @@ Future<void> checkCurrentNodes(
       sharedPreferences.getInt(PreferencesKey.currentLitecoinElectrumSererIdKey);
   final currentHavenNodeId = sharedPreferences.getInt(PreferencesKey.currentHavenNodeIdKey);
   final currentEthereumNodeId = sharedPreferences.getInt(PreferencesKey.currentEthereumNodeIdKey);
+  final currentPolygonNodeId = sharedPreferences.getInt(PreferencesKey.currentPolygonNodeIdKey);
   final currentNanoNodeId = sharedPreferences.getInt(PreferencesKey.currentNanoNodeIdKey);
   final currentNanoPowNodeId = sharedPreferences.getInt(PreferencesKey.currentNanoPowNodeIdKey);
   final currentBitcoinCashNodeId =
@@ -589,6 +603,8 @@ Future<void> checkCurrentNodes(
       nodeSource.values.firstWhereOrNull((node) => node.key == currentHavenNodeId);
   final currentEthereumNodeServer =
       nodeSource.values.firstWhereOrNull((node) => node.key == currentEthereumNodeId);
+  final currentPolygonNodeServer =
+      nodeSource.values.firstWhereOrNull((node) => node.key == currentPolygonNodeId);
   final currentNanoNodeServer =
       nodeSource.values.firstWhereOrNull((node) => node.key == currentNanoNodeId);
   final currentNanoPowNodeServer =
@@ -648,6 +664,12 @@ Future<void> checkCurrentNodes(
     await nodeSource.add(node);
     await sharedPreferences.setInt(PreferencesKey.currentBitcoinCashNodeIdKey, node.key as int);
   }
+
+  if (currentPolygonNodeServer == null) {
+    final node = Node(uri: polygonDefaultNodeUri, type: WalletType.polygon);
+    await nodeSource.add(node);
+    await sharedPreferences.setInt(PreferencesKey.currentPolygonNodeIdKey, node.key as int);
+  }
 }
 
 Future<void> resetBitcoinElectrumServer(
@@ -742,3 +764,20 @@ Future<void> changeNanoCurrentPowNodeToDefault(
   final nodeId = node?.key as int? ?? 0;
   await sharedPreferences.setInt(PreferencesKey.currentNanoPowNodeIdKey, nodeId);
 }
+
+Future<void> addPolygonNodeList({required Box<Node> nodes}) async {
+  final nodeList = await loadDefaultPolygonNodes();
+  for (var node in nodeList) {
+    if (nodes.values.firstWhereOrNull((element) => element.uriRaw == node.uriRaw) == null) {
+      await nodes.add(node);
+    }
+  }
+}
+
+Future<void> changePolygonCurrentNodeToDefault(
+    {required SharedPreferences sharedPreferences, required Box<Node> nodes}) async {
+  final node = getPolygonDefaultNode(nodes: nodes);
+  final nodeId = node?.key as int? ?? 0;
+
+  await sharedPreferences.setInt(PreferencesKey.currentPolygonNodeIdKey, nodeId);
+}

lib/entities/ens_record.dart

@@ -1,4 +1,5 @@
 import 'package:cake_wallet/ethereum/ethereum.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:cw_core/wallet_type.dart';
 import 'package:ens_dart/ens_dart.dart';
@@ -13,6 +14,10 @@ class EnsRecord {
       _client = ethereum!.getWeb3Client(wallet);
     }
     
+    if (wallet != null && wallet.type == WalletType.polygon) {
+      _client = polygon!.getWeb3Client(wallet);
+    }
+
     if (_client == null) {
       _client = Web3Client("https://ethereum.publicnode.com", Client());
     }
@@ -31,6 +36,7 @@ class EnsRecord {
           case WalletType.haven:
             return await ens.withName(name).getCoinAddress(CoinType.XHV);
           case WalletType.ethereum:
+          case WalletType.polygon:
           default:
             return (await ens.withName(name).getAddress()).hex;
         }

lib/entities/main_actions.dart

@@ -19,7 +19,8 @@ class MainActions {
 
   final bool Function(DashboardViewModel viewModel)? isEnabled;
   final bool Function(DashboardViewModel viewModel)? canShow;
-  final Future<void> Function(BuildContext context, DashboardViewModel viewModel) onTap;
+  final Future<void> Function(
+      BuildContext context, DashboardViewModel viewModel) onTap;
 
   MainActions._({
     required this.name,
@@ -52,6 +53,7 @@ class MainActions {
         case WalletType.bitcoin:
         case WalletType.litecoin:
         case WalletType.ethereum:
+        case WalletType.polygon:
         case WalletType.bitcoinCash:
           switch (defaultBuyProvider) {
             case BuyProviderType.AskEachTime:
@@ -124,6 +126,7 @@ class MainActions {
         case WalletType.bitcoin:
         case WalletType.litecoin:
         case WalletType.ethereum:
+        case WalletType.polygon:
         case WalletType.bitcoinCash:
           if (viewModel.isEnabledSellAction) {
             final moonPaySellProvider = MoonPaySellProvider();

lib/entities/node_list.dart

@@ -133,6 +133,22 @@ Future<List<Node>> loadDefaultNanoPowNodes() async {
   return nodes;
 }
 
+Future<List<Node>> loadDefaultPolygonNodes() async {
+  final nodesRaw = await rootBundle.loadString('assets/polygon_node_list.yml');
+  final loadedNodes = loadYaml(nodesRaw) as YamlList;
+  final nodes = <Node>[];
+
+  for (final raw in loadedNodes) {
+    if (raw is Map) {
+      final node = Node.fromMap(Map<String, Object>.from(raw));
+      node.type = WalletType.polygon;
+      nodes.add(node);
+    }
+  }
+
+  return nodes;
+}
+
 Future<void> resetToDefault(Box<Node> nodeSource) async {
   final moneroNodes = await loadDefaultNodes();
   final bitcoinElectrumServerList = await loadBitcoinElectrumServerList();
@@ -141,6 +157,8 @@ Future<void> resetToDefault(Box<Node> nodeSource) async {
   final havenNodes = await loadDefaultHavenNodes();
   final ethereumNodes = await loadDefaultEthereumNodes();
   final nanoNodes = await loadDefaultNanoNodes();
+  final polygonNodes = await loadDefaultPolygonNodes();
+
 
   final nodes = moneroNodes +
       bitcoinElectrumServerList +
@@ -148,7 +166,8 @@ Future<void> resetToDefault(Box<Node> nodeSource) async {
       havenNodes +
       ethereumNodes +
       bitcoinCashElectrumServerList +
-      nanoNodes;
+      nanoNodes +
+      polygonNodes;
 
   await nodeSource.clear();
   await nodeSource.addAll(nodes);

lib/entities/preferences_key.dart

@@ -6,6 +6,7 @@ class PreferencesKey {
   static const currentLitecoinElectrumSererIdKey = 'current_node_id_ltc';
   static const currentHavenNodeIdKey = 'current_node_id_xhv';
   static const currentEthereumNodeIdKey = 'current_node_id_eth';
+  static const currentPolygonNodeIdKey = 'current_node_id_matic';
   static const currentNanoNodeIdKey = 'current_node_id_nano';
   static const currentNanoPowNodeIdKey = 'current_node_id_nano_pow';
   static const currentBananoNodeIdKey = 'current_node_id_banano';
@@ -37,6 +38,7 @@ class PreferencesKey {
   static const havenTransactionPriority = 'current_fee_priority_haven';
   static const litecoinTransactionPriority = 'current_fee_priority_litecoin';
   static const ethereumTransactionPriority = 'current_fee_priority_ethereum';
+  static const polygonTransactionPriority = 'current_fee_priority_polygon';
   static const bitcoinCashTransactionPriority = 'current_fee_priority_bitcoin_cash';
   static const shouldShowReceiveWarning = 'should_show_receive_warning';
   static const shouldShowYatPopup = 'should_show_yat_popup';
@@ -50,6 +52,7 @@ class PreferencesKey {
   static const sortBalanceBy = 'sort_balance_by';
   static const pinNativeTokenAtTop = 'pin_native_token_at_top';
   static const useEtherscan = 'use_etherscan';
+  static const usePolygonScan = 'use_polygonscan';
   static const defaultNanoRep = 'default_nano_representative';
   static const defaultBananoRep = 'default_banano_representative';
   static const lookupsTwitter = 'looks_up_twitter';

lib/entities/priority_for_wallet_type.dart

@@ -3,6 +3,7 @@ import 'package:cake_wallet/bitcoin_cash/bitcoin_cash.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/haven/haven.dart';
 import 'package:cake_wallet/monero/monero.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cw_core/transaction_priority.dart';
 import 'package:cw_core/wallet_type.dart';
 
@@ -24,6 +25,8 @@ List<TransactionPriority> priorityForWalletType(WalletType type) {
     case WalletType.nano:
     case WalletType.banano:
       return [];
+    case WalletType.polygon:
+      return polygon!.getTransactionPriorities();
     default:
       return [];
   }

lib/polygon/cw_polygon.dart

@@ -0,0 +1,156 @@
+part of 'polygon.dart';
+
+class CWPolygon extends Polygon {
+  @override
+  List<String> getPolygonWordList(String language) => EthereumMnemonics.englishWordlist;
+
+  WalletService createPolygonWalletService(Box<WalletInfo> walletInfoSource) =>
+      PolygonWalletService(walletInfoSource);
+
+  @override
+  WalletCredentials createPolygonNewWalletCredentials({
+    required String name,
+    WalletInfo? walletInfo,
+  }) =>
+      PolygonNewWalletCredentials(name: name, walletInfo: walletInfo);
+
+  @override
+  WalletCredentials createPolygonRestoreWalletFromSeedCredentials({
+    required String name,
+    required String mnemonic,
+    required String password,
+  }) =>
+      PolygonRestoreWalletFromSeedCredentials(name: name, password: password, mnemonic: mnemonic);
+
+  @override
+  WalletCredentials createPolygonRestoreWalletFromPrivateKey({
+    required String name,
+    required String privateKey,
+    required String password,
+  }) =>
+      PolygonRestoreWalletFromPrivateKey(name: name, password: password, privateKey: privateKey);
+
+  @override
+  String getAddress(WalletBase wallet) => (wallet as PolygonWallet).walletAddresses.address;
+
+  @override
+  String getPrivateKey(WalletBase wallet) {
+    final privateKeyHolder = (wallet as PolygonWallet).polygonPrivateKey;
+    String stringKey = bytesToHex(privateKeyHolder.privateKey);
+    return stringKey;
+  }
+
+  @override
+  String getPublicKey(WalletBase wallet) {
+    final privateKeyInUnitInt = (wallet as PolygonWallet).polygonPrivateKey;
+    final publicKey = privateKeyInUnitInt.address.hex;
+    return publicKey;
+  }
+
+  @override
+  TransactionPriority getDefaultTransactionPriority() => PolygonTransactionPriority.medium;
+
+  @override
+  TransactionPriority getPolygonTransactionPrioritySlow() => PolygonTransactionPriority.slow;
+
+  @override
+  List<TransactionPriority> getTransactionPriorities() => PolygonTransactionPriority.all;
+
+  @override
+  TransactionPriority deserializePolygonTransactionPriority(int raw) =>
+      PolygonTransactionPriority.deserialize(raw: raw);
+
+  Object createPolygonTransactionCredentials(
+    List<Output> outputs, {
+    required TransactionPriority priority,
+    required CryptoCurrency currency,
+    int? feeRate,
+  }) =>
+      PolygonTransactionCredentials(
+        outputs
+            .map((out) => OutputInfo(
+                fiatAmount: out.fiatAmount,
+                cryptoAmount: out.cryptoAmount,
+                address: out.address,
+                note: out.note,
+                sendAll: out.sendAll,
+                extractedAddress: out.extractedAddress,
+                isParsedAddress: out.isParsedAddress,
+                formattedCryptoAmount: out.formattedCryptoAmount))
+            .toList(),
+        priority: priority as PolygonTransactionPriority,
+        currency: currency,
+        feeRate: feeRate,
+      );
+
+  Object createPolygonTransactionCredentialsRaw(
+    List<OutputInfo> outputs, {
+    TransactionPriority? priority,
+    required CryptoCurrency currency,
+    required int feeRate,
+  }) =>
+      PolygonTransactionCredentials(
+        outputs,
+        priority: priority as PolygonTransactionPriority?,
+        currency: currency,
+        feeRate: feeRate,
+      );
+
+  @override
+  int formatterPolygonParseAmount(String amount) => PolygonFormatter.parsePolygonAmount(amount);
+
+  @override
+  double formatterPolygonAmountToDouble(
+      {TransactionInfo? transaction, BigInt? amount, int exponent = 18}) {
+    assert(transaction != null || amount != null);
+
+    if (transaction != null) {
+      transaction as PolygonTransactionInfo;
+      return transaction.ethAmount / BigInt.from(10).pow(transaction.exponent);
+    } else {
+      return (amount!) / BigInt.from(10).pow(exponent);
+    }
+  }
+
+  @override
+  List<Erc20Token> getERC20Currencies(WalletBase wallet) {
+    final polygonWallet = wallet as PolygonWallet;
+    return polygonWallet.erc20Currencies;
+  }
+
+  @override
+  Future<void> addErc20Token(WalletBase wallet, Erc20Token token) async =>
+      await (wallet as PolygonWallet).addErc20Token(token);
+
+  @override
+  Future<void> deleteErc20Token(WalletBase wallet, Erc20Token token) async =>
+      await (wallet as PolygonWallet).deleteErc20Token(token);
+
+  @override
+  Future<Erc20Token?> getErc20Token(WalletBase wallet, String contractAddress) async {
+    final polygonWallet = wallet as PolygonWallet;
+    return await polygonWallet.getErc20Token(contractAddress);
+  }
+
+  @override
+  CryptoCurrency assetOfTransaction(WalletBase wallet, TransactionInfo transaction) {
+    transaction as PolygonTransactionInfo;
+    if (transaction.tokenSymbol == CryptoCurrency.maticpoly.title) {
+      return CryptoCurrency.maticpoly;
+    }
+
+    wallet as PolygonWallet;
+    return wallet.erc20Currencies.firstWhere(
+        (element) => transaction.tokenSymbol.toLowerCase() == element.symbol.toLowerCase());
+  }
+
+  @override
+  void updatePolygonScanUsageState(WalletBase wallet, bool isEnabled) {
+    (wallet as PolygonWallet).updatePolygonScanUsageState(isEnabled);
+  }
+
+  @override
+  Web3Client? getWeb3Client(WalletBase wallet) {
+    return (wallet as PolygonWallet).getWeb3Client();
+  }
+}

lib/reactions/fiat_rate_update.dart

@@ -3,9 +3,11 @@ import 'package:cake_wallet/core/fiat_conversion_service.dart';
 import 'package:cake_wallet/entities/fiat_api_mode.dart';
 import 'package:cake_wallet/entities/update_haven_rate.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/store/dashboard/fiat_conversion_store.dart';
 import 'package:cake_wallet/store/settings_store.dart';
+import 'package:cw_core/erc20_token.dart';
 import 'package:cw_core/wallet_type.dart';
 import 'package:mobx/mobx.dart';
 
@@ -33,10 +35,18 @@ Future<void> startFiatRateUpdate(
                 torOnly: settingsStore.fiatApiMode == FiatApiMode.torOnly);
       }
 
+      Iterable<Erc20Token>? currencies;
       if (appStore.wallet!.type == WalletType.ethereum) {
-        final currencies =
+        currencies =
             ethereum!.getERC20Currencies(appStore.wallet!).where((element) => element.enabled);
+      }
 
+      if (appStore.wallet!.type == WalletType.polygon) {
+        currencies =
+            polygon!.getERC20Currencies(appStore.wallet!).where((element) => element.enabled);
+      }
+
+      if (currencies != null) {
         for (final currency in currencies) {
           () async {
             fiatConversionStore.prices[currency] = await FiatConversionService.fetchPrice(

lib/reactions/on_current_wallet_change.dart

@@ -2,7 +2,8 @@ import 'package:cake_wallet/entities/auto_generate_subaddress_status.dart';
 import 'package:cake_wallet/entities/fiat_api_mode.dart';
 import 'package:cake_wallet/entities/update_haven_rate.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
-import 'package:cake_wallet/nano/nano.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
+import 'package:cw_core/erc20_token.dart';
 import 'package:cw_core/transaction_history.dart';
 import 'package:cw_core/balance.dart';
 import 'package:cw_core/transaction_info.dart';
@@ -107,10 +108,17 @@ void startCurrentWalletChangeReaction(
           fiat: settingsStore.fiatCurrency,
           torOnly: settingsStore.fiatApiMode == FiatApiMode.torOnly);
 
+      Iterable<Erc20Token>? currencies;
       if (wallet.type == WalletType.ethereum) {
-        final currencies =
+        currencies =
             ethereum!.getERC20Currencies(appStore.wallet!).where((element) => element.enabled);
+      }
+      if (wallet.type == WalletType.polygon) {
+        currencies =
+            polygon!.getERC20Currencies(appStore.wallet!).where((element) => element.enabled);
+      }
 
+      if (currencies != null) {
         for (final currency in currencies) {
           () async {
             fiatConversionStore.prices[currency] = await FiatConversionService.fetchPrice(

lib/reactions/wallet_connect.dart

@@ -0,0 +1,46 @@
+import 'package:cake_wallet/core/wallet_connect/evm_chain_id.dart';
+import 'package:cw_core/wallet_type.dart';
+
+bool isEVMCompatibleChain(WalletType walletType) {
+  switch (walletType) {
+    case WalletType.polygon:
+    case WalletType.ethereum:
+      return true;
+    default:
+      return false;
+  }
+}
+
+String getChainNameSpaceAndIdBasedOnWalletType(WalletType walletType) {
+  switch (walletType) {
+    case WalletType.ethereum:
+      return EVMChainId.ethereum.chain();
+    case WalletType.polygon:
+      return EVMChainId.polygon.chain();
+    default:
+      return '';
+  }
+}
+
+int getChainIdBasedOnWalletType(WalletType walletType) {
+  switch (walletType) {
+    case WalletType.polygon:
+      return 137;
+
+    // For now, we return eth chain Id as the default, we'll modify as we add more wallets
+    case WalletType.ethereum:
+    default:
+      return 1;
+  }
+}
+
+String getChainNameBasedOnWalletType(WalletType walletType) {
+  switch (walletType) {
+    case WalletType.ethereum:
+      return 'eth';
+    case WalletType.polygon:
+      return 'polygon';
+    default:
+      return '';
+  }
+}

lib/src/screens/dashboard/desktop_widgets/desktop_wallet_selection_dropdown.dart

@@ -33,6 +33,7 @@ class _DesktopWalletSelectionDropDownState extends State<DesktopWalletSelectionD
   final litecoinIcon = Image.asset('assets/images/litecoin_icon.png', height: 24, width: 24);
   final havenIcon = Image.asset('assets/images/haven_logo.png', height: 24, width: 24);
   final ethereumIcon = Image.asset('assets/images/eth_icon.png', height: 24, width: 24);
+  final polygonIcon = Image.asset('assets/images/matic_icon.png', height: 24, width: 24);
   final bitcoinCashIcon = Image.asset('assets/images/bch_icon.png', height: 24, width: 24);
   final nanoIcon = Image.asset('assets/images/nano_icon.png', height: 24, width: 24);
   final bananoIcon = Image.asset('assets/images/nano_icon.png', height: 24, width: 24);
@@ -150,6 +151,8 @@ class _DesktopWalletSelectionDropDownState extends State<DesktopWalletSelectionD
         return nanoIcon;
       case WalletType.banano:
         return bananoIcon;
+      case WalletType.polygon:
+        return polygonIcon;
       default:
         return nonWalletTypeIcon;
     }

lib/src/screens/dashboard/pages/balance_page.dart

@@ -1,5 +1,6 @@
 import 'package:auto_size_text/auto_size_text.dart';
 import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/src/screens/dashboard/pages/nft_listing_page.dart';
 import 'package:cake_wallet/src/screens/dashboard/widgets/home_screen_account_widget.dart';
@@ -13,7 +14,6 @@ import 'package:cake_wallet/utils/feature_flag.dart';
 import 'package:cake_wallet/utils/show_pop_up.dart';
 import 'package:cake_wallet/view_model/dashboard/dashboard_view_model.dart';
 import 'package:cake_wallet/view_model/dashboard/nft_view_model.dart';
-import 'package:cw_core/wallet_type.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
 
@@ -32,12 +32,12 @@ class BalancePage extends StatelessWidget {
   Widget build(BuildContext context) {
     return Observer(
       builder: (context) {
-        final isEthereumWallet = dashboardViewModel.type == WalletType.ethereum;
+        final isEVMCompatible = isEVMCompatibleChain(dashboardViewModel.type);
         return DefaultTabController(
-          length: isEthereumWallet ? 2 : 1,
+          length: isEVMCompatible ? 2 : 1,
           child: Column(
             children: [
-              if (isEthereumWallet)
+              if (isEVMCompatible)
                 Align(
                   alignment: Alignment.centerLeft,
                   child: Padding(
@@ -66,7 +66,7 @@ class BalancePage extends StatelessWidget {
                   physics: NeverScrollableScrollPhysics(),
                   children: [
                     CryptoBalanceWidget(dashboardViewModel: dashboardViewModel),
-                    if (isEthereumWallet) NFTListingPage(nftViewModel: nftViewModel)
+                    if (isEVMCompatible) NFTListingPage(nftViewModel: nftViewModel)
                   ],
                 ),
               ),

lib/src/screens/dashboard/widgets/menu_widget.dart

@@ -32,7 +32,8 @@ class MenuWidgetState extends State<MenuWidget> {
       this.ethereumIcon = Image.asset('assets/images/eth_icon.png'),
       this.nanoIcon = Image.asset('assets/images/nano_icon.png'),
       this.bananoIcon = Image.asset('assets/images/nano_icon.png'),
-      this.bitcoinCashIcon = Image.asset('assets/images/bch_icon.png');
+        this.bitcoinCashIcon = Image.asset('assets/images/bch_icon.png'),
+        this.polygonIcon = Image.asset('assets/images/matic_icon.png');
 
 
   final largeScreen = 731;
@@ -54,6 +55,8 @@ class MenuWidgetState extends State<MenuWidget> {
   Image bitcoinCashIcon;
   Image nanoIcon;
   Image bananoIcon;
+  Image polygonIcon;
+
 
   @override
   void initState() {
@@ -219,6 +222,8 @@ class MenuWidgetState extends State<MenuWidget> {
         return nanoIcon;
       case WalletType.banano:
         return bananoIcon;
+      case WalletType.polygon:
+        return polygonIcon;
       default:
         throw Exception('No icon for ${type.toString()}');
     }

lib/src/screens/receive/widgets/currency_input_field.dart

@@ -1,5 +1,6 @@
 import 'package:cake_wallet/src/widgets/base_text_form_field.dart';
 import 'package:cake_wallet/utils/responsive_layout_util.dart';
+import 'package:cw_core/crypto_currency.dart';
 import 'package:cw_core/currency.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -23,6 +24,13 @@ class CurrencyInputField extends StatelessWidget {
   final TextEditingController controller;
   final bool isLight;
 
+  String get _currencyName {
+    if (selectedCurrency is CryptoCurrency) {
+      return (selectedCurrency as CryptoCurrency).title.toUpperCase();
+    }
+    return selectedCurrency.name.toUpperCase();
+  }
+
   @override
   Widget build(BuildContext context) {
     final arrowBottomPurple = Image.asset(
@@ -74,7 +82,7 @@ class CurrencyInputField extends StatelessWidget {
                             child: arrowBottomPurple,
                           ),
                           Text(
-                            selectedCurrency.name.toUpperCase(),
+                            _currencyName,
                             style: TextStyle(
                               fontWeight: FontWeight.w600,
                               fontSize: 16,
@@ -83,7 +91,7 @@ class CurrencyInputField extends StatelessWidget {
                           ),
                           if (selectedCurrency.tag != null)
                             Padding(
-                              padding: const EdgeInsets.only(right: 3.0),
+                              padding: const EdgeInsets.symmetric(horizontal: 3.0),
                               child: Container(
                                 decoration: BoxDecoration(
                                   color: Theme.of(context).extension<SendPageTheme>()!.textFieldButtonColor,

lib/src/screens/root/root.dart

@@ -2,9 +2,9 @@ import 'dart:async';
 import 'package:cake_wallet/core/auth_service.dart';
 import 'package:cake_wallet/core/totp_request_details.dart';
 import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/utils/device_info.dart';
 import 'package:cake_wallet/utils/payment_request.dart';
-import 'package:cw_core/wallet_type.dart';
 import 'package:flutter/material.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/src/screens/auth/auth_page.dart';
@@ -169,7 +169,7 @@ class RootState extends State<Root> with WidgetsBindingObserver {
       );
       launchUri = null;
     } else if (isWalletConnectLink) {
-      if (widget.appStore.wallet!.type == WalletType.ethereum) {
+      if (isEVMCompatibleChain(widget.appStore.wallet!.type)) {
         widget.navigatorKey.currentState?.pushNamed(
           Routes.walletConnectConnectionsListing,
           arguments: launchUri,
@@ -205,7 +205,7 @@ class RootState extends State<Root> with WidgetsBindingObserver {
 
   String? _getRouteToGo() {
     if (isWalletConnectLink) {
-      if (widget.appStore.wallet!.type != WalletType.ethereum) {
+      if (isEVMCompatibleChain(widget.appStore.wallet!.type)) {
         _nonETHWalletErrorToast(S.current.switchToETHWallet);
         return null;
       }

lib/src/screens/seed/pre_seed_page.dart

@@ -13,7 +13,8 @@ class PreSeedPage extends BasePage {
   PreSeedPage(this.type, this.advancedPrivacySettingsViewModel)
       : imageLight = Image.asset('assets/images/pre_seed_light.png'),
         imageDark = Image.asset('assets/images/pre_seed_dark.png'),
-        seedPhraseLength = advancedPrivacySettingsViewModel.seedPhraseLength.value {
+        seedPhraseLength =
+            advancedPrivacySettingsViewModel.seedPhraseLength.value {
     wordsCount = _wordsCount(type, seedPhraseLength);
   }
 
@@ -40,14 +41,14 @@ class PreSeedPage extends BasePage {
           alignment: Alignment.center,
           padding: EdgeInsets.all(24),
           child: ConstrainedBox(
-            constraints: BoxConstraints(maxWidth: ResponsiveLayoutUtilBase.kDesktopMaxWidthConstraint),
+            constraints: BoxConstraints(
+                maxWidth: ResponsiveLayoutUtilBase.kDesktopMaxWidthConstraint),
             child: Column(
               mainAxisAlignment: MainAxisAlignment.spaceBetween,
               children: <Widget>[
                 ConstrainedBox(
                   constraints: BoxConstraints(
-                    maxHeight: MediaQuery.of(context).size.height * 0.3
+                      maxHeight: MediaQuery.of(context).size.height * 0.3),
-                  ),
                   child: AspectRatio(aspectRatio: 1, child: image),
                 ),
                 Padding(
@@ -58,12 +59,14 @@ class PreSeedPage extends BasePage {
                     style: TextStyle(
                         fontSize: 14,
                         fontWeight: FontWeight.normal,
-                        color: Theme.of(context).extension<CakeTextTheme>()!.secondaryTextColor),
+                        color: Theme.of(context)
+                            .extension<CakeTextTheme>()!
+                            .secondaryTextColor),
                   ),
                 ),
                 PrimaryButton(
-                    onPressed: () =>
+                    onPressed: () => Navigator.of(context)
-                        Navigator.of(context).popAndPushNamed(Routes.seed, arguments: true),
+                        .popAndPushNamed(Routes.seed, arguments: true),
                     text: S.of(context).pre_seed_button_text,
                     color: Theme.of(context).primaryColor,
                     textColor: Colors.white)
@@ -79,6 +82,7 @@ class PreSeedPage extends BasePage {
         return 25;
       case WalletType.ethereum:
       case WalletType.bitcoinCash:
+      case WalletType.polygon:
         return seedPhraseLength;
       default:
         return 24;

lib/src/screens/settings/connection_sync_page.dart

@@ -1,4 +1,5 @@
 import 'package:cake_wallet/core/wallet_connect/web3wallet_service.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/src/screens/settings/widgets/settings_cell_with_arrow.dart';
 import 'package:cake_wallet/src/screens/settings/widgets/settings_picker_cell.dart';
 import 'package:cake_wallet/src/screens/settings/widgets/settings_switcher_cell.dart';
@@ -8,7 +9,6 @@ import 'package:cake_wallet/utils/feature_flag.dart';
 import 'package:cake_wallet/utils/show_pop_up.dart';
 import 'package:cake_wallet/view_model/dashboard/dashboard_view_model.dart';
 import 'package:cake_wallet/view_model/settings/sync_mode.dart';
-import 'package:cw_core/wallet_type.dart';
 import 'package:flutter/material.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/generated/i18n.dart';
@@ -85,7 +85,7 @@ class ConnectionSyncPage extends BasePage {
               );
             },
           ),
-          if (dashboardViewModel.wallet.type == WalletType.ethereum) ...[
+          if (isEVMCompatibleChain(dashboardViewModel.wallet.type)) ...[
             WalletConnectTile(
               onTap: () => Navigator.of(context).pushNamed(Routes.walletConnectConnectionsListing),
             ),
@@ -101,6 +101,7 @@ class ConnectionSyncPage extends BasePage {
     );
   }
 
+
   Future<void> _presentReconnectAlert(BuildContext context) async {
     await showPopUp<void>(
       context: context,

lib/src/screens/settings/privacy_page.dart

@@ -87,6 +87,14 @@ class PrivacyPage extends BasePage {
                     onValueChange: (BuildContext _, bool value) {
                       _privacySettingsViewModel.setUseEtherscan(value);
                     }),
+              if (_privacySettingsViewModel.canUsePolygonScan)
+                SettingsSwitcherCell(
+                  title: S.current.polygonscan_history,
+                  value: _privacySettingsViewModel.usePolygonScan,
+                  onValueChange: (BuildContext _, bool value) {
+                    _privacySettingsViewModel.setUsePolygonScan(value);
+                  },
+                ),
               SettingsCellWithArrow(
                 title: S.current.domain_looks_up,
                 handler: (context) => Navigator.of(context).pushNamed(Routes.domainLookupsPage),

lib/src/screens/wallet_connect/widgets/connection_request_widget.dart

@@ -14,12 +14,14 @@ import 'connection_widget.dart';
 class ConnectionRequestWidget extends StatefulWidget {
   const ConnectionRequestWidget({
     required this.wallet,
+    required this.chaindIdNamespace,
     this.authRequest,
     this.sessionProposal,
     Key? key,
   }) : super(key: key);
 
   final Web3Wallet wallet;
+  final String chaindIdNamespace;
   final AuthRequestModel? authRequest;
   final SessionRequestModel? sessionProposal;
 
@@ -52,23 +54,26 @@ class _ConnectionRequestWidgetState extends State<ConnectionRequestWidget> {
 
     return _ConnectionMetadataDisplayWidget(
       metadata: metadata,
+      wallet: widget.wallet,
       authRequest: widget.authRequest,
       sessionProposal: widget.sessionProposal,
-      wallet: widget.wallet,
+      chaindIdNamespace: widget.chaindIdNamespace,
     );
   }
 }
 
 class _ConnectionMetadataDisplayWidget extends StatelessWidget {
   const _ConnectionMetadataDisplayWidget({
-    required this.metadata,
     required this.wallet,
-    this.authRequest,
+    required this.metadata,
     required this.sessionProposal,
+    required this.chaindIdNamespace,
+    this.authRequest,
   });
 
   final ConnectionMetadata? metadata;
   final Web3Wallet wallet;
+  final String chaindIdNamespace;
   final AuthRequestModel? authRequest;
   final SessionRequestModel? sessionProposal;
 
@@ -114,7 +119,11 @@ class _ConnectionMetadataDisplayWidget extends StatelessWidget {
           const SizedBox(height: 8),
           Visibility(
             visible: authRequest != null,
-            child: _AuthRequestWidget(wallet: wallet, authRequest: authRequest),
+            child: _AuthRequestWidget(
+              wallet: wallet,
+              authRequest: authRequest,
+              chaindIdNamespace: chaindIdNamespace,
+            ),
 
             //If authRequest is null, sessionProposal is not null.
             replacement: _SessionProposalWidget(sessionProposal: sessionProposal!),
@@ -126,16 +135,21 @@ class _ConnectionMetadataDisplayWidget extends StatelessWidget {
 }
 
 class _AuthRequestWidget extends StatelessWidget {
-  const _AuthRequestWidget({required this.wallet, this.authRequest});
+  const _AuthRequestWidget({
+    required this.wallet,
+    required this.chaindIdNamespace,
+    this.authRequest,
+  });
 
   final Web3Wallet wallet;
+  final String chaindIdNamespace;
   final AuthRequestModel? authRequest;
 
   @override
   Widget build(BuildContext context) {
     final model = ConnectionModel(
       text: wallet.formatAuthMessage(
-        iss: 'did:pkh:eip155:1:${authRequest!.iss}',
+        iss: 'did:pkh:$chaindIdNamespace:${authRequest!.iss}',
         cacaoPayload: CacaoRequestPayload.fromPayloadParams(
           authRequest!.request.payloadParams,
         ),

lib/src/screens/wallet_list/wallet_list_page.dart

@@ -49,6 +49,7 @@ class WalletListBodyState extends State<WalletListBody> {
   final ethereumIcon = Image.asset('assets/images/eth_icon.png', height: 24, width: 24);
   final bitcoinCashIcon = Image.asset('assets/images/bch_icon.png', height: 24, width: 24);
   final nanoIcon = Image.asset('assets/images/nano_icon.png', height: 24, width: 24);
+  final polygonIcon = Image.asset('assets/images/matic_icon.png', height: 24, width: 24);
   final scrollController = ScrollController();
   final double tileHeight = 60;
   Flushbar<void>? _progressBar;
@@ -256,6 +257,8 @@ class WalletListBodyState extends State<WalletListBody> {
         return bitcoinCashIcon;
       case WalletType.nano:
         return nanoIcon;
+      case WalletType.polygon:
+        return polygonIcon;
       default:
         return nonWalletTypeIcon;
     }

lib/store/app_store.dart

@@ -1,8 +1,8 @@
 import 'package:cake_wallet/core/wallet_connect/web3wallet_service.dart';
 import 'package:cake_wallet/di.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/utils/exception_handler.dart';
 import 'package:cw_core/transaction_info.dart';
-import 'package:cw_core/wallet_type.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cw_core/balance.dart';
 import 'package:cw_core/wallet_base.dart';
@@ -44,7 +44,7 @@ abstract class AppStoreBase with Store {
     this.wallet = wallet;
     this.wallet!.setExceptionHandler(ExceptionHandler.onError);
 
-    if (wallet.type == WalletType.ethereum) {
+    if (isEVMCompatibleChain(wallet.type)) {
       getIt.get<Web3WalletService>().init();
     }
   }

lib/store/settings_store.dart

@@ -12,6 +12,7 @@ import 'package:cake_wallet/entities/preferences_key.dart';
 import 'package:cake_wallet/entities/seed_phrase_length.dart';
 import 'package:cake_wallet/entities/seed_type.dart';
 import 'package:cake_wallet/entities/sort_balance_types.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/exchange/provider/trocador_exchange_provider.dart';
 import 'package:cake_wallet/view_model/settings/sync_mode.dart';
 import 'package:cake_wallet/utils/device_info.dart';
@@ -88,6 +89,7 @@ abstract class SettingsStoreBase with Store {
       required this.sortBalanceBy,
       required this.pinNativeTokenAtTop,
       required this.useEtherscan,
+      required this.usePolygonScan,
       required this.defaultNanoRep,
       required this.defaultBananoRep,
       required this.lookupsTwitter,
@@ -101,6 +103,7 @@ abstract class SettingsStoreBase with Store {
       TransactionPriority? initialHavenTransactionPriority,
       TransactionPriority? initialLitecoinTransactionPriority,
       TransactionPriority? initialEthereumTransactionPriority,
+      TransactionPriority? initialPolygonTransactionPriority,
       TransactionPriority? initialBitcoinCashTransactionPriority})
       : nodes = ObservableMap<WalletType, Node>.of(nodes),
         powNodes = ObservableMap<WalletType, Node>.of(powNodes),
@@ -165,6 +168,10 @@ abstract class SettingsStoreBase with Store {
       priority[WalletType.ethereum] = initialEthereumTransactionPriority;
     }
 
+    if (initialPolygonTransactionPriority != null) {
+      priority[WalletType.polygon] = initialPolygonTransactionPriority;
+    }
+
     if (initialBitcoinCashTransactionPriority != null) {
       priority[WalletType.bitcoinCash] = initialBitcoinCashTransactionPriority;
     }
@@ -202,6 +209,9 @@ abstract class SettingsStoreBase with Store {
         case WalletType.bitcoinCash:
           key = PreferencesKey.bitcoinCashTransactionPriority;
           break;
+        case WalletType.polygon:
+          key = PreferencesKey.polygonTransactionPriority;
+          break;
         default:
           key = null;
       }
@@ -245,8 +255,8 @@ abstract class SettingsStoreBase with Store {
 
     reaction(
         (_) => moneroSeedType,
-        (SeedType moneroSeedType) => sharedPreferences.setInt(
+        (SeedType moneroSeedType) =>
-            PreferencesKey.moneroSeedType, moneroSeedType.raw));
+            sharedPreferences.setInt(PreferencesKey.moneroSeedType, moneroSeedType.raw));
 
     reaction(
         (_) => fiatApiMode,
@@ -343,8 +353,8 @@ abstract class SettingsStoreBase with Store {
 
     reaction(
         (_) => seedPhraseLength,
-            (SeedPhraseLength seedPhraseWordCount) =>
+        (SeedPhraseLength seedPhraseWordCount) => sharedPreferences.setInt(
-            sharedPreferences.setInt(PreferencesKey.currentSeedPhraseLength, seedPhraseWordCount.value));
+            PreferencesKey.currentSeedPhraseLength, seedPhraseWordCount.value));
 
     reaction(
         (_) => pinTimeOutDuration,
@@ -388,6 +398,11 @@ abstract class SettingsStoreBase with Store {
         (bool useEtherscan) =>
             _sharedPreferences.setBool(PreferencesKey.useEtherscan, useEtherscan));
 
+    reaction(
+        (_) => usePolygonScan,
+        (bool usePolygonScan) =>
+            _sharedPreferences.setBool(PreferencesKey.usePolygonScan, usePolygonScan));
+
     reaction((_) => defaultNanoRep,
         (String nanoRep) => _sharedPreferences.setString(PreferencesKey.defaultNanoRep, nanoRep));
 
@@ -412,18 +427,16 @@ abstract class SettingsStoreBase with Store {
 
     reaction(
         (_) => lookupsUnstoppableDomains,
-            (bool looksUpUnstoppableDomains) =>
+        (bool looksUpUnstoppableDomains) => _sharedPreferences.setBool(
-            _sharedPreferences.setBool(PreferencesKey.lookupsUnstoppableDomains, looksUpUnstoppableDomains));
+            PreferencesKey.lookupsUnstoppableDomains, looksUpUnstoppableDomains));
 
     reaction(
         (_) => lookupsOpenAlias,
         (bool looksUpOpenAlias) =>
             _sharedPreferences.setBool(PreferencesKey.lookupsOpenAlias, looksUpOpenAlias));
 
-    reaction(
+    reaction((_) => lookupsENS,
-            (_) => lookupsENS,
+        (bool looksUpENS) => _sharedPreferences.setBool(PreferencesKey.lookupsENS, looksUpENS));
-            (bool looksUpENS) =>
-            _sharedPreferences.setBool(PreferencesKey.lookupsENS, looksUpENS));
 
     this.nodes.observe((change) {
       if (change.newValue != null && change.key != null) {
@@ -562,6 +575,9 @@ abstract class SettingsStoreBase with Store {
   @observable
   bool useEtherscan;
 
+  @observable
+  bool usePolygonScan;
+
   @observable
   String defaultNanoRep;
 
@@ -651,6 +667,7 @@ abstract class SettingsStoreBase with Store {
     TransactionPriority? havenTransactionPriority;
     TransactionPriority? litecoinTransactionPriority;
     TransactionPriority? ethereumTransactionPriority;
+    TransactionPriority? polygonTransactionPriority;
     TransactionPriority? bitcoinCashTransactionPriority;
 
     if (sharedPreferences.getInt(PreferencesKey.havenTransactionPriority) != null) {
@@ -662,9 +679,13 @@ abstract class SettingsStoreBase with Store {
           sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority)!);
     }
     if (sharedPreferences.getInt(PreferencesKey.ethereumTransactionPriority) != null) {
-      ethereumTransactionPriority = bitcoin?.deserializeLitecoinTransactionPriority(
+      ethereumTransactionPriority = ethereum?.deserializeEthereumTransactionPriority(
           sharedPreferences.getInt(PreferencesKey.ethereumTransactionPriority)!);
     }
+    if (sharedPreferences.getInt(PreferencesKey.polygonTransactionPriority) != null) {
+      polygonTransactionPriority = polygon?.deserializePolygonTransactionPriority(
+          sharedPreferences.getInt(PreferencesKey.polygonTransactionPriority)!);
+    }
     if (sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority) != null) {
       bitcoinCashTransactionPriority = bitcoinCash?.deserializeBitcoinCashTransactionPriority(
           sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority)!);
@@ -676,6 +697,7 @@ abstract class SettingsStoreBase with Store {
     litecoinTransactionPriority ??= bitcoin?.getLitecoinTransactionPriorityMedium();
     ethereumTransactionPriority ??= ethereum?.getDefaultTransactionPriority();
     bitcoinCashTransactionPriority ??= bitcoinCash?.getDefaultTransactionPriority();
+    polygonTransactionPriority ??= polygon?.getDefaultTransactionPriority();
 
     final currentBalanceDisplayMode = BalanceDisplayMode.deserialize(
         raw: sharedPreferences.getInt(PreferencesKey.currentBalanceDisplayModeKey)!);
@@ -749,12 +771,14 @@ abstract class SettingsStoreBase with Store {
     final pinNativeTokenAtTop =
         sharedPreferences.getBool(PreferencesKey.pinNativeTokenAtTop) ?? true;
     final useEtherscan = sharedPreferences.getBool(PreferencesKey.useEtherscan) ?? true;
+    final usePolygonScan = sharedPreferences.getBool(PreferencesKey.usePolygonScan) ?? true;
     final defaultNanoRep = sharedPreferences.getString(PreferencesKey.defaultNanoRep) ?? "";
     final defaultBananoRep = sharedPreferences.getString(PreferencesKey.defaultBananoRep) ?? "";
     final lookupsTwitter = sharedPreferences.getBool(PreferencesKey.lookupsTwitter) ?? true;
     final lookupsMastodon = sharedPreferences.getBool(PreferencesKey.lookupsMastodon) ?? true;
     final lookupsYatService = sharedPreferences.getBool(PreferencesKey.lookupsYatService) ?? true;
-    final lookupsUnstoppableDomains = sharedPreferences.getBool(PreferencesKey.lookupsUnstoppableDomains) ?? true;
+    final lookupsUnstoppableDomains =
+        sharedPreferences.getBool(PreferencesKey.lookupsUnstoppableDomains) ?? true;
     final lookupsOpenAlias = sharedPreferences.getBool(PreferencesKey.lookupsOpenAlias) ?? true;
     final lookupsENS = sharedPreferences.getBool(PreferencesKey.lookupsENS) ?? true;
 
@@ -774,6 +798,7 @@ abstract class SettingsStoreBase with Store {
         sharedPreferences.getInt(PreferencesKey.currentBitcoinCashNodeIdKey);
     final havenNodeId = sharedPreferences.getInt(PreferencesKey.currentHavenNodeIdKey);
     final ethereumNodeId = sharedPreferences.getInt(PreferencesKey.currentEthereumNodeIdKey);
+    final polygonNodeId = sharedPreferences.getInt(PreferencesKey.currentPolygonNodeIdKey);
     final nanoNodeId = sharedPreferences.getInt(PreferencesKey.currentNanoNodeIdKey);
     final nanoPowNodeId = sharedPreferences.getInt(PreferencesKey.currentNanoPowNodeIdKey);
     final moneroNode = nodeSource.get(nodeId);
@@ -781,6 +806,7 @@ abstract class SettingsStoreBase with Store {
     final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
     final havenNode = nodeSource.get(havenNodeId);
     final ethereumNode = nodeSource.get(ethereumNodeId);
+    final polygonNode = nodeSource.get(polygonNodeId);
     final bitcoinCashElectrumServer = nodeSource.get(bitcoinCashElectrumServerId);
     final nanoNode = nodeSource.get(nanoNodeId);
     final nanoPowNode = powNodeSource.get(nanoPowNodeId);
@@ -824,6 +850,10 @@ abstract class SettingsStoreBase with Store {
       nodes[WalletType.ethereum] = ethereumNode;
     }
 
+    if (polygonNode != null) {
+      nodes[WalletType.polygon] = polygonNode;
+    }
+
     if (bitcoinCashElectrumServer != null) {
       nodes[WalletType.bitcoinCash] = bitcoinCashElectrumServer;
     }
@@ -869,10 +899,12 @@ abstract class SettingsStoreBase with Store {
         actionlistDisplayMode: actionListDisplayMode,
         initialPinLength: pinLength,
         pinTimeOutDuration: pinCodeTimeOutDuration,
-        seedPhraseLength: seedPhraseWordCount,initialLanguageCode: savedLanguageCode,
+        seedPhraseLength: seedPhraseWordCount,
+        initialLanguageCode: savedLanguageCode,
         sortBalanceBy: sortBalanceBy,
         pinNativeTokenAtTop: pinNativeTokenAtTop,
         useEtherscan: useEtherscan,
+        usePolygonScan: usePolygonScan,
         defaultNanoRep: defaultNanoRep,
         defaultBananoRep: defaultBananoRep,
         lookupsTwitter: lookupsTwitter,
@@ -900,6 +932,7 @@ abstract class SettingsStoreBase with Store {
         initialShouldRequireTOTP2FAForAllSecurityAndBackupSettings:
             shouldRequireTOTP2FAForAllSecurityAndBackupSettings,
         initialEthereumTransactionPriority: ethereumTransactionPriority,
+        initialPolygonTransactionPriority: polygonTransactionPriority,
         backgroundTasks: backgroundTasks,
         initialSyncMode: savedSyncMode,
         initialSyncAll: savedSyncAll,
@@ -934,6 +967,11 @@ abstract class SettingsStoreBase with Store {
               sharedPreferences.getInt(PreferencesKey.ethereumTransactionPriority)!) ??
           priority[WalletType.ethereum]!;
     }
+    if (sharedPreferences.getInt(PreferencesKey.polygonTransactionPriority) != null) {
+      priority[WalletType.polygon] = polygon?.deserializePolygonTransactionPriority(
+              sharedPreferences.getInt(PreferencesKey.polygonTransactionPriority)!) ??
+          priority[WalletType.polygon]!;
+    }
     if (sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority) != null) {
       priority[WalletType.bitcoinCash] = bitcoinCash?.deserializeBitcoinCashTransactionPriority(
               sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority)!) ??
@@ -1027,12 +1065,14 @@ abstract class SettingsStoreBase with Store {
         .values[sharedPreferences.getInt(PreferencesKey.sortBalanceBy) ?? sortBalanceBy.index];
     pinNativeTokenAtTop = sharedPreferences.getBool(PreferencesKey.pinNativeTokenAtTop) ?? true;
     useEtherscan = sharedPreferences.getBool(PreferencesKey.useEtherscan) ?? true;
+    usePolygonScan = sharedPreferences.getBool(PreferencesKey.usePolygonScan) ?? true;
     defaultNanoRep = sharedPreferences.getString(PreferencesKey.defaultNanoRep) ?? "";
     defaultBananoRep = sharedPreferences.getString(PreferencesKey.defaultBananoRep) ?? "";
     lookupsTwitter = sharedPreferences.getBool(PreferencesKey.lookupsTwitter) ?? true;
     lookupsMastodon = sharedPreferences.getBool(PreferencesKey.lookupsMastodon) ?? true;
     lookupsYatService = sharedPreferences.getBool(PreferencesKey.lookupsYatService) ?? true;
-    lookupsUnstoppableDomains = sharedPreferences.getBool(PreferencesKey.lookupsUnstoppableDomains) ?? true;
+    lookupsUnstoppableDomains =
+        sharedPreferences.getBool(PreferencesKey.lookupsUnstoppableDomains) ?? true;
     lookupsOpenAlias = sharedPreferences.getBool(PreferencesKey.lookupsOpenAlias) ?? true;
     lookupsENS = sharedPreferences.getBool(PreferencesKey.lookupsENS) ?? true;
 
@@ -1045,6 +1085,7 @@ abstract class SettingsStoreBase with Store {
         sharedPreferences.getInt(PreferencesKey.currentBitcoinCashNodeIdKey);
     final havenNodeId = sharedPreferences.getInt(PreferencesKey.currentHavenNodeIdKey);
     final ethereumNodeId = sharedPreferences.getInt(PreferencesKey.currentEthereumNodeIdKey);
+    final polygonNodeId = sharedPreferences.getInt(PreferencesKey.currentPolygonNodeIdKey);
     final nanoNodeId = sharedPreferences.getInt(PreferencesKey.currentNanoNodeIdKey);
     final nanoPowNodeId = sharedPreferences.getInt(PreferencesKey.currentNanoNodeIdKey);
     final moneroNode = nodeSource.get(nodeId);
@@ -1052,6 +1093,7 @@ abstract class SettingsStoreBase with Store {
     final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
     final havenNode = nodeSource.get(havenNodeId);
     final ethereumNode = nodeSource.get(ethereumNodeId);
+    final polygonNode = nodeSource.get(polygonNodeId);
     final bitcoinCashNode = nodeSource.get(bitcoinCashElectrumServerId);
     final nanoNode = nodeSource.get(nanoNodeId);
 
@@ -1075,6 +1117,10 @@ abstract class SettingsStoreBase with Store {
       nodes[WalletType.ethereum] = ethereumNode;
     }
 
+    if (polygonNode != null) {
+      nodes[WalletType.polygon] = polygonNode;
+    }
+
     if (bitcoinCashNode != null) {
       nodes[WalletType.bitcoinCash] = bitcoinCashNode;
     }
@@ -1110,6 +1156,9 @@ abstract class SettingsStoreBase with Store {
       case WalletType.nano:
         await _sharedPreferences.setInt(PreferencesKey.currentNanoNodeIdKey, node.key as int);
         break;
+      case WalletType.polygon:
+        await _sharedPreferences.setInt(PreferencesKey.currentPolygonNodeIdKey, node.key as int);
+        break;
       default:
         break;
     }
@@ -1141,7 +1190,6 @@ abstract class SettingsStoreBase with Store {
     trocadorProviderStates[providerName] = state;
   }
 
-
   static Future<String?> _getDeviceName() async {
     String? deviceName = '';
     final deviceInfoPlugin = DeviceInfoPlugin();

lib/view_model/dashboard/balance_view_model.dart

@@ -1,5 +1,6 @@
 import 'package:cake_wallet/entities/fiat_api_mode.dart';
 import 'package:cake_wallet/entities/sort_balance_types.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cw_core/transaction_history.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:cw_core/balance.dart';
@@ -81,7 +82,7 @@ abstract class BalanceViewModelBase with Store {
   bool get isFiatDisabled => settingsStore.fiatApiMode == FiatApiMode.disabled;
 
   @computed
-  bool get isHomeScreenSettingsEnabled => wallet.type == WalletType.ethereum;
+  bool get isHomeScreenSettingsEnabled => isEVMCompatibleChain(wallet.type);
 
   @computed
   bool get hasAccounts => wallet.type == WalletType.monero;
@@ -123,6 +124,7 @@ abstract class BalanceViewModelBase with Store {
       case WalletType.monero:
       case WalletType.haven:
       case WalletType.ethereum:
+      case WalletType.polygon:
         return S.current.xmr_available_balance;
       default:
         return S.current.confirmed;
@@ -135,6 +137,7 @@ abstract class BalanceViewModelBase with Store {
       case WalletType.monero:
       case WalletType.haven:
       case WalletType.ethereum:
+      case WalletType.polygon:
         return S.current.xmr_full_balance;
       default:
         return S.current.unconfirmed;
@@ -272,7 +275,8 @@ abstract class BalanceViewModelBase with Store {
   }
 
   @computed
-  bool get hasAdditionalBalance => wallet.type != WalletType.ethereum;
+  bool get hasAdditionalBalance => !isEVMCompatibleChain(wallet.type);
+   
 
   @computed
   List<BalanceRecord> get formattedBalances {

lib/view_model/dashboard/home_settings_view_model.dart

@@ -2,10 +2,12 @@ import 'package:cake_wallet/core/fiat_conversion_service.dart';
 import 'package:cake_wallet/entities/fiat_api_mode.dart';
 import 'package:cake_wallet/entities/sort_balance_types.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cake_wallet/view_model/dashboard/balance_view_model.dart';
 import 'package:cw_core/crypto_currency.dart';
 import 'package:cw_core/erc20_token.dart';
+import 'package:cw_core/wallet_type.dart';
 import 'package:mobx/mobx.dart';
 
 part 'home_settings_view_model.g.dart';
@@ -42,18 +44,41 @@ abstract class HomeSettingsViewModelBase with Store {
   void setPinNativeToken(bool value) => _settingsStore.pinNativeTokenAtTop = value;
 
   Future<void> addErc20Token(Erc20Token token) async {
+    if (_balanceViewModel.wallet.type == WalletType.ethereum) {
       await ethereum!.addErc20Token(_balanceViewModel.wallet, token);
+    }
+
+    if (_balanceViewModel.wallet.type == WalletType.polygon) {
+      await polygon!.addErc20Token(_balanceViewModel.wallet, token);
+    }
+
     _updateTokensList();
     _updateFiatPrices(token);
   }
 
   Future<void> deleteErc20Token(Erc20Token token) async {
+    if (_balanceViewModel.wallet.type == WalletType.ethereum) {
       await ethereum!.deleteErc20Token(_balanceViewModel.wallet, token);
+    }
+
+    if (_balanceViewModel.wallet.type == WalletType.polygon) {
+      await polygon!.deleteErc20Token(_balanceViewModel.wallet, token);
+    }
+
     _updateTokensList();
   }
 
-  Future<Erc20Token?> getErc20Token(String contractAddress) async =>
+  Future<Erc20Token?> getErc20Token(String contractAddress) async {
-      await ethereum!.getErc20Token(_balanceViewModel.wallet, contractAddress);
+    if (_balanceViewModel.wallet.type == WalletType.ethereum) {
+      return await ethereum!.getErc20Token(_balanceViewModel.wallet, contractAddress);
+    }
+
+    if (_balanceViewModel.wallet.type == WalletType.polygon) {
+      return await polygon!.getErc20Token(_balanceViewModel.wallet, contractAddress);
+    }
+
+    return null;
+  }
 
   CryptoCurrency get nativeToken => _balanceViewModel.wallet.currency;
 
@@ -69,7 +94,12 @@ abstract class HomeSettingsViewModelBase with Store {
 
   void changeTokenAvailability(Erc20Token token, bool value) async {
     token.enabled = value;
+    if (_balanceViewModel.wallet.type == WalletType.ethereum) {
       ethereum!.addErc20Token(_balanceViewModel.wallet, token);
+    }
+    if (_balanceViewModel.wallet.type == WalletType.polygon) {
+      polygon!.addErc20Token(_balanceViewModel.wallet, token);
+    }
     _refreshTokensList();
   }
 
@@ -83,7 +113,8 @@ abstract class HomeSettingsViewModelBase with Store {
         return -1;
       } else if (e2.enabled && !e1.enabled) {
         return 1;
-      } else if (!e1.enabled && !e2.enabled) { // if both are disabled then sort alphabetically
+      } else if (!e1.enabled && !e2.enabled) {
+        // if both are disabled then sort alphabetically
         return e1.name.compareTo(e2.name);
       }
 
@@ -92,6 +123,7 @@ abstract class HomeSettingsViewModelBase with Store {
 
     tokens.clear();
 
+    if (_balanceViewModel.wallet.type == WalletType.ethereum) {
       tokens.addAll(ethereum!
           .getERC20Currencies(_balanceViewModel.wallet)
           .where((element) => _matchesSearchText(element))
@@ -99,6 +131,15 @@ abstract class HomeSettingsViewModelBase with Store {
         ..sort(_sortFunc));
     }
 
+    if (_balanceViewModel.wallet.type == WalletType.polygon) {
+      tokens.addAll(polygon!
+          .getERC20Currencies(_balanceViewModel.wallet)
+          .where((element) => _matchesSearchText(element))
+          .toList()
+        ..sort(_sortFunc));
+    }
+  }
+
   @action
   void _refreshTokensList() {
     final _tokens = Set.of(tokens);

lib/view_model/dashboard/nft_view_model.dart

@@ -1,10 +1,9 @@
-// ignore_for_file: public_member_api_docs, sort_constructors_first
 import 'dart:convert';
 import 'dart:developer';
 
 import 'package:cake_wallet/core/wallet_connect/wc_bottom_sheet_service.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/src/screens/wallet_connect/widgets/message_display_widget.dart';
-import 'package:cw_core/wallet_type.dart';
 import 'package:http/http.dart' as http;
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/.secrets.g.dart' as secrets;
@@ -39,23 +38,26 @@ abstract class NFTViewModelBase with Store {
 
   @action
   Future<void> getNFTAssetByWallet() async {
-    if (appStore.wallet!.type != WalletType.ethereum) return;
+    if (!isEVMCompatibleChain(appStore.wallet!.type)) return;
 
     final walletAddress = appStore.wallet!.walletInfo.address;
     log('Fetching wallet NFTs for $walletAddress');
 
+    final chainName = getChainNameBasedOnWalletType(appStore.wallet!.type);
     // the [chain] refers to the chain network that the nft is on
     // the [format] refers to the number format type of the responses
     // the [normalizedMetadata] field is a boolean that determines if
     // the response would include a json string of the NFT Metadata that can be decoded
     // and used within the wallet
+    // the [excludeSpam] field is a boolean that determines if spam nfts be excluded from the response.
     final uri = Uri.https(
       'deep-index.moralis.io',
       '/api/v2.2/$walletAddress/nft',
       {
-        "chain": "eth",
+        "chain": chainName,
         "format": "decimal",
         "media_items": "false",
+        "exclude_spam": "true",
         "normalizeMetadata": "true",
       },
     );
@@ -94,7 +96,7 @@ abstract class NFTViewModelBase with Store {
 
   @action
   Future<void> importNFT(String tokenAddress, String tokenId) async {
-    
+    final chainName = getChainNameBasedOnWalletType(appStore.wallet!.type);
     // the [chain] refers to the chain network that the nft is on
     // the [format] refers to the number format type of the responses
     // the [normalizedMetadata] field is a boolean that determines if
@@ -104,7 +106,7 @@ abstract class NFTViewModelBase with Store {
       'deep-index.moralis.io',
       '/api/v2.2/nft/$tokenAddress/$tokenId',
       {
-        "chain": "eth",
+        "chain": chainName,
         "format": "decimal",
         "media_items": "false",
         "normalizeMetadata": "true",

lib/view_model/dashboard/transaction_list_item.dart

@@ -3,6 +3,7 @@ import 'package:cake_wallet/entities/fiat_currency.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/nano/nano.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cw_core/transaction_direction.dart';
 import 'package:cw_core/transaction_info.dart';
 import 'package:cake_wallet/store/settings_store.dart';
@@ -91,6 +92,13 @@ class TransactionListItem extends ActionListItem with Keyable {
             cryptoAmount: ethereum!.formatterEthereumAmountToDouble(transaction: transaction),
             price: price);
         break;
+      case WalletType.polygon:
+        final asset = polygon!.assetOfTransaction(balanceViewModel.wallet, transaction);
+        final price = balanceViewModel.fiatConvertationStore.prices[asset];
+        amount = calculateFiatAmountRaw(
+            cryptoAmount: polygon!.formatterPolygonAmountToDouble(transaction: transaction),
+            price: price);
+        break;
       case WalletType.nano:
         amount = calculateFiatAmountRaw(
             cryptoAmount: double.parse(nanoUtil!.getRawAsDecimalString(

lib/view_model/exchange/exchange_trade_view_model.dart

@@ -28,10 +28,7 @@ abstract class ExchangeTradeViewModelBase with Store {
       required this.tradesStore,
       required this.sendViewModel})
       : trade = tradesStore.trade!,
-        isSendable = tradesStore.trade!.from == wallet.currency ||
+        isSendable = _checkIfCanSend(tradesStore, wallet),
-            tradesStore.trade!.provider == ExchangeProviderDescription.xmrto ||
-            (wallet.currency == CryptoCurrency.eth &&
-                tradesStore.trade!.from.tag == CryptoCurrency.eth.title),
         items = ObservableList<ExchangeTradeItem>() {
     switch (trade.provider) {
       case ExchangeProviderDescription.changeNow:
@@ -155,4 +152,19 @@ abstract class ExchangeTradeViewModelBase with Store {
           isCopied: true),
     ]);
   }
+
+  static bool _checkIfCanSend(TradesStore tradesStore, WalletBase wallet) {
+    bool _isEthToken() =>
+        wallet.currency == CryptoCurrency.eth &&
+        tradesStore.trade!.from.tag == CryptoCurrency.eth.title;
+
+    bool _isPolygonToken() =>
+        wallet.currency == CryptoCurrency.maticpoly &&
+        tradesStore.trade!.from.tag == CryptoCurrency.maticpoly.tag;
+
+    return tradesStore.trade!.from == wallet.currency ||
+        tradesStore.trade!.provider == ExchangeProviderDescription.xmrto ||
+        _isEthToken() ||
+        _isPolygonToken();
+  }
 }

lib/view_model/exchange/exchange_view_model.dart

@@ -23,6 +23,7 @@ import 'package:cake_wallet/exchange/trade.dart';
 import 'package:cake_wallet/exchange/trade_request.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/monero/monero.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/store/dashboard/trades_store.dart';
 import 'package:cake_wallet/store/settings_store.dart';
@@ -287,6 +288,8 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
         return transactionPriority == ethereum!.getEthereumTransactionPrioritySlow();
       case WalletType.bitcoinCash:
         return transactionPriority == bitcoinCash!.getBitcoinCashTransactionPrioritySlow();
+      case WalletType.polygon:
+        return transactionPriority == polygon!.getPolygonTransactionPrioritySlow();
       default:
         return false;
     }
@@ -626,6 +629,10 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
         depositCurrency = CryptoCurrency.nano;
         receiveCurrency = CryptoCurrency.xmr;
         break;
+      case WalletType.polygon:
+        depositCurrency = CryptoCurrency.maticpoly;
+        receiveCurrency = CryptoCurrency.xmr;
+        break;
       default:
         break;
     }
@@ -713,6 +720,9 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
       case WalletType.bitcoinCash:
         _settingsStore.priority[wallet.type] = bitcoinCash!.getDefaultTransactionPriority();
         break;
+      case WalletType.polygon:
+        _settingsStore.priority[wallet.type] = polygon!.getDefaultTransactionPriority();
+        break;
       default:
         break;
     }

lib/view_model/node_list/node_list_view_model.dart

@@ -72,6 +72,9 @@ abstract class NodeListViewModelBase with Store {
       case WalletType.nano:
         node = getNanoDefaultNode(nodes: _nodeSource)!;
         break;
+      case WalletType.polygon:
+        node = getPolygonDefaultNode(nodes: _nodeSource)!;
+        break;
       default:
         throw Exception('Unexpected wallet type: ${_appStore.wallet!.type}');
     }

lib/view_model/restore/restore_from_qr_vm.dart

@@ -2,6 +2,7 @@ import 'package:cake_wallet/bitcoin/bitcoin.dart';
 import 'package:cake_wallet/bitcoin_cash/bitcoin_cash.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/nano/nano.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/view_model/restore/restore_mode.dart';
 import 'package:cake_wallet/view_model/restore/restore_wallet.dart';
 import 'package:hive/hive.dart';
@@ -71,6 +72,9 @@ abstract class WalletRestorationFromQRVMBase extends WalletCreationVM with Store
           case WalletType.ethereum:
             return ethereum!.createEthereumRestoreWalletFromPrivateKey(
                 name: name, password: password, privateKey: restoreWallet.privateKey!);
+          case WalletType.polygon:
+            return polygon!.createPolygonRestoreWalletFromPrivateKey(
+                name: name, password: password, privateKey: restoreWallet.privateKey!);
           default:
             throw Exception('Unexpected type: ${restoreWallet.type.toString()}');
         }
@@ -95,6 +99,9 @@ abstract class WalletRestorationFromQRVMBase extends WalletCreationVM with Store
           case WalletType.nano:
             return nano!.createNanoRestoreWalletFromSeedCredentials(
                 name: name, mnemonic: restoreWallet.mnemonicSeed ?? '', password: password);
+          case WalletType.polygon:
+            return polygon!.createPolygonRestoreWalletFromSeedCredentials(
+                name: name, mnemonic: restoreWallet.mnemonicSeed ?? '', password: password);
           default:
             throw Exception('Unexpected type: ${type.toString()}');
         }

lib/view_model/restore/wallet_restore_from_qr_code.dart

@@ -26,6 +26,7 @@ class WalletRestoreFromQRCode {
     'litecoin-wallet': WalletType.litecoin,
     'litecoin_wallet': WalletType.litecoin,
     'ethereum-wallet': WalletType.ethereum,
+    'polygon-wallet': WalletType.polygon,
     'nano-wallet': WalletType.nano,
     'nano_wallet': WalletType.nano,
     'bitcoincash': WalletType.bitcoinCash,
@@ -157,7 +158,16 @@ class WalletRestoreFromQRCode {
       return WalletRestoreMode.keys;
     }
 
-    if ((type == WalletType.nano || type == WalletType.banano) && credentials.containsKey('hexSeed')) {
+    if (type == WalletType.polygon && credentials.containsKey('private_key')) {
+      final privateKey = credentials['private_key'] as String;
+      if (privateKey.isEmpty) {
+        throw Exception('Unexpected restore mode: private_key');
+      }
+      return WalletRestoreMode.keys;
+    }
+
+    if ((type == WalletType.nano || type == WalletType.banano) &&
+        credentials.containsKey('hexSeed')) {
       final hexSeed = credentials['hexSeed'] as String;
       if (hexSeed.isEmpty) {
         throw Exception('Unexpected restore mode: hexSeed');

lib/view_model/send/output.dart

@@ -4,6 +4,8 @@ import 'package:cake_wallet/entities/parse_address_from_domain.dart';
 import 'package:cake_wallet/entities/parsed_address.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/haven/haven.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/src/screens/send/widgets/extract_address_from_parsed.dart';
 import 'package:cw_core/crypto_currency.dart';
 import 'package:flutter/material.dart';
@@ -27,7 +29,8 @@ const String cryptoNumberPattern = '0.0';
 class Output = OutputBase with _$Output;
 
 abstract class OutputBase with Store {
-  OutputBase(this._wallet, this._settingsStore, this._fiatConversationStore, this.cryptoCurrencyHandler)
+  OutputBase(
+      this._wallet, this._settingsStore, this._fiatConversationStore, this.cryptoCurrencyHandler)
       : _cryptoNumberFormat = NumberFormat(cryptoNumberPattern),
         key = UniqueKey(),
         sendAll = false,
@@ -65,8 +68,7 @@ abstract class OutputBase with Store {
 
   @computed
   bool get isParsedAddress =>
-      parsedAddress.parseFrom != ParseFrom.notParsed &&
+      parsedAddress.parseFrom != ParseFrom.notParsed && parsedAddress.name.isNotEmpty;
-      parsedAddress.name.isNotEmpty;
 
   @computed
   int get formattedCryptoAmount {
@@ -83,8 +85,7 @@ abstract class OutputBase with Store {
           case WalletType.bitcoin:
           case WalletType.litecoin:
           case WalletType.bitcoinCash:
-            _amount =
+            _amount = bitcoin!.formatterStringDoubleToBitcoinAmount(_cryptoAmount);
-                bitcoin!.formatterStringDoubleToBitcoinAmount(_cryptoAmount);
             break;
           case WalletType.haven:
             _amount = haven!.formatterMoneroParseAmount(amount: _cryptoAmount);
@@ -92,6 +93,9 @@ abstract class OutputBase with Store {
           case WalletType.ethereum:
             _amount = ethereum!.formatterEthereumParseAmount(_cryptoAmount);
             break;
+          case WalletType.polygon:
+            _amount = polygon!.formatterPolygonParseAmount(_cryptoAmount);
+            break;
           default:
             break;
         }
@@ -130,6 +134,10 @@ abstract class OutputBase with Store {
       if (_wallet.type == WalletType.ethereum) {
         return ethereum!.formatterEthereumAmountToDouble(amount: BigInt.from(fee));
       }
+
+      if (_wallet.type == WalletType.polygon) {
+        return polygon!.formatterPolygonAmountToDouble(amount: BigInt.from(fee));
+      }
     } catch (e) {
       print(e.toString());
     }
@@ -140,10 +148,11 @@ abstract class OutputBase with Store {
   @computed
   String get estimatedFeeFiatAmount {
     try {
-      final currency = _wallet.type == WalletType.ethereum ? _wallet.currency : cryptoCurrencyHandler();
+      final currency = isEVMCompatibleChain(_wallet.type)
+          ? _wallet.currency
+          : cryptoCurrencyHandler();
       final fiat = calculateFiatAmountRaw(
-          price: _fiatConversationStore.prices[currency]!,
+          price: _fiatConversationStore.prices[currency]!, cryptoAmount: estimatedFee);
-          cryptoAmount: estimatedFee);
       return fiat;
     } catch (_) {
       return '0.00';
@@ -240,6 +249,7 @@ abstract class OutputBase with Store {
         maximumFractionDigits = 12;
         break;
       case WalletType.ethereum:
+      case WalletType.polygon:
         maximumFractionDigits = 12;
         break;
       default:

lib/view_model/send/send_template_view_model.dart

@@ -50,7 +50,9 @@ abstract class SendTemplateViewModelBase with Store {
   TemplateValidator get templateValidator => TemplateValidator();
 
   bool get hasMultiRecipient =>
-      _wallet.type != WalletType.haven && _wallet.type != WalletType.ethereum;
+      _wallet.type != WalletType.haven &&
+      _wallet.type != WalletType.ethereum &&
+      _wallet.type != WalletType.polygon;
 
   @computed
   CryptoCurrency get cryptoCurrency => _wallet.currency;

lib/view_model/send/send_view_model.dart

@@ -5,6 +5,8 @@ import 'package:cake_wallet/nano/nano.dart';
 import 'package:cake_wallet/core/wallet_change_listener_view_model.dart';
 import 'package:cake_wallet/entities/contact_record.dart';
 import 'package:cake_wallet/entities/wallet_contact.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/view_model/contact_list/contact_list_view_model.dart';
 import 'package:cake_wallet/view_model/dashboard/balance_view_model.dart';
@@ -42,7 +44,7 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
   void onWalletChange(wallet) {
     currencies = wallet.balance.keys.toList();
     selectedCryptoCurrency = wallet.currency;
-    hasMultipleTokens = wallet.type == WalletType.ethereum;
+    hasMultipleTokens = isEVMCompatibleChain(wallet.type);
   }
 
   SendViewModelBase(
@@ -55,7 +57,7 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
   )   : state = InitialExecutionState(),
         currencies = appStore.wallet!.balance.keys.toList(),
         selectedCryptoCurrency = appStore.wallet!.currency,
-        hasMultipleTokens = appStore.wallet!.type == WalletType.ethereum,
+        hasMultipleTokens = isEVMCompatibleChain(appStore.wallet!.type),
         outputs = ObservableList<Output>(),
         _settingsStore = appStore.settingsStore,
         fiatFromSettings = appStore.settingsStore.fiatCurrency,
@@ -119,7 +121,7 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
     try {
       if (pendingTransaction != null) {
         final currency =
-            walletType == WalletType.ethereum ? wallet.currency : selectedCryptoCurrency;
+            isEVMCompatibleChain(walletType) ? wallet.currency : selectedCryptoCurrency;
         final fiat = calculateFiatAmount(
             price: _fiatConversationStore.prices[currency]!,
             cryptoAmount: pendingTransaction!.feeFormatted);
@@ -372,6 +374,9 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
             priority: priority!, currency: selectedCryptoCurrency);
       case WalletType.nano:
         return nano!.createNanoTransactionCredentials(outputs);
+      case WalletType.polygon:
+        return polygon!.createPolygonTransactionCredentials(outputs,
+            priority: priority!, currency: selectedCryptoCurrency);
       default:
         throw Exception('Unexpected wallet type: ${wallet.type}');
     }
@@ -412,11 +417,15 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
     WalletType walletType,
     CryptoCurrency currency,
   ) {
-    if (walletType == WalletType.ethereum || walletType == WalletType.haven) {
+    if (walletType == WalletType.ethereum ||
+        walletType == WalletType.polygon ||
+        walletType == WalletType.haven) {
       if (error.contains('gas required exceeds allowance') ||
           error.contains('insufficient funds for')) {
         return S.current.do_not_have_enough_gas_asset(currency.toString());
       }
+
+      return error;
     }
 
     return error;

lib/view_model/settings/privacy_settings_view_model.dart

@@ -1,6 +1,7 @@
 import 'package:cake_wallet/entities/auto_generate_subaddress_status.dart';
 import 'package:cake_wallet/entities/exchange_api_mode.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cw_core/balance.dart';
 import 'package:cw_core/transaction_history.dart';
@@ -12,8 +13,7 @@ import 'package:cake_wallet/entities/fiat_api_mode.dart';
 
 part 'privacy_settings_view_model.g.dart';
 
-class
+class PrivacySettingsViewModel = PrivacySettingsViewModelBase with _$PrivacySettingsViewModel;
-PrivacySettingsViewModel = PrivacySettingsViewModelBase with _$PrivacySettingsViewModel;
 
 abstract class PrivacySettingsViewModelBase with Store {
   PrivacySettingsViewModelBase(this._settingsStore, this._wallet);
@@ -58,6 +58,9 @@ abstract class PrivacySettingsViewModelBase with Store {
   @computed
   bool get useEtherscan => _settingsStore.useEtherscan;
 
+  @computed
+  bool get usePolygonScan => _settingsStore.usePolygonScan;
+
   @computed
   bool get lookupTwitter => _settingsStore.lookupsTwitter;
 
@@ -78,6 +81,8 @@ abstract class PrivacySettingsViewModelBase with Store {
 
   bool get canUseEtherscan => _wallet.type == WalletType.ethereum;
 
+  bool get canUsePolygonScan => _wallet.type == WalletType.polygon;
+
   @action
   void setShouldSaveRecipientAddress(bool value) =>
       _settingsStore.shouldSaveRecipientAddress = value;
@@ -120,4 +125,10 @@ abstract class PrivacySettingsViewModelBase with Store {
     _settingsStore.useEtherscan = value;
     ethereum!.updateEtherscanUsageState(_wallet, value);
   }
+
+  @action
+  void setUsePolygonScan(bool value) {
+    _settingsStore.usePolygonScan = value;
+    polygon!.updatePolygonScanUsageState(_wallet, value);
+  }
 }

lib/view_model/transaction_details_view_model.dart

@@ -51,6 +51,9 @@ abstract class TransactionDetailsViewModelBase with Store {
       case WalletType.nano:
         _addNanoListItems(tx, dateFormat);
         break;
+      case WalletType.polygon:
+        _addPolygonListItems(tx, dateFormat);
+        break;
       default:
         break;
     }
@@ -126,6 +129,8 @@ abstract class TransactionDetailsViewModelBase with Store {
         return 'https://nanolooker.com/block/${txId}';
       case WalletType.banano:
         return 'https://bananolooker.com/block/${txId}';
+      case WalletType.polygon:
+        return 'https://polygonscan.com/tx/${txId}';
       default:
         return '';
     }
@@ -148,6 +153,8 @@ abstract class TransactionDetailsViewModelBase with Store {
         return S.current.view_transaction_on + 'nanolooker.com';
       case WalletType.banano:
         return S.current.view_transaction_on + 'bananolooker.com';
+      case WalletType.polygon:
+        return S.current.view_transaction_on + 'polygonscan.com';
       default:
         return '';
     }
@@ -237,7 +244,6 @@ abstract class TransactionDetailsViewModelBase with Store {
     items.addAll(_items);
   }
 
-
   void _addNanoListItems(TransactionInfo tx, DateFormat dateFormat) {
     final _items = [
       StandartListItem(title: S.current.transaction_details_transaction_id, value: tx.id),
@@ -250,4 +256,21 @@ abstract class TransactionDetailsViewModelBase with Store {
 
     items.addAll(_items);
   }
+
+  void _addPolygonListItems(TransactionInfo tx, DateFormat dateFormat) {
+    final _items = [
+      StandartListItem(title: S.current.transaction_details_transaction_id, value: tx.id),
+      StandartListItem(
+          title: S.current.transaction_details_date, value: dateFormat.format(tx.date)),
+      StandartListItem(title: S.current.confirmations, value: tx.confirmations.toString()),
+      StandartListItem(title: S.current.transaction_details_height, value: '${tx.height}'),
+      StandartListItem(title: S.current.transaction_details_amount, value: tx.amountFormatted()),
+      if (tx.feeFormatted()?.isNotEmpty ?? false)
+        StandartListItem(title: S.current.transaction_details_fee, value: tx.feeFormatted()!),
+      if (showRecipientAddress && tx.to != null)
+        StandartListItem(title: S.current.transaction_details_recipient_address, value: tx.to!),
+    ];
+
+    items.addAll(_items);
+  }
 }

lib/view_model/wallet_address_list/wallet_address_list_view_model.dart

@@ -1,6 +1,7 @@
 import 'package:cake_wallet/core/wallet_change_listener_view_model.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/entities/fiat_currency.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:cake_wallet/store/dashboard/fiat_conversion_store.dart';
 import 'package:cake_wallet/store/yat/yat_store.dart';
 import 'package:cw_core/currency.dart';
@@ -139,6 +140,22 @@ class NanoURI extends PaymentURI {
   }
 }
 
+class PolygonURI extends PaymentURI {
+  PolygonURI({required String amount, required String address})
+      : super(amount: amount, address: address);
+
+  @override
+  String toString() {
+    var base = 'polygon:' + address;
+
+    if (amount.isNotEmpty) {
+      base += '?amount=${amount.replaceAll(',', '.')}';
+    }
+
+    return base;
+  }
+}
+
 abstract class WalletAddressListViewModelBase extends WalletChangeListenerViewModel with Store {
   WalletAddressListViewModelBase({
     required AppStore appStore,
@@ -216,6 +233,10 @@ abstract class WalletAddressListViewModelBase extends WalletChangeListenerViewMo
       return NanoURI(amount: amount, address: address.address);
     }
 
+    if (wallet.type == WalletType.polygon) {
+      return PolygonURI(amount: amount, address: address.address);
+    }
+
     throw Exception('Unexpected type: ${type.toString()}');
   }
 
@@ -272,6 +293,12 @@ abstract class WalletAddressListViewModelBase extends WalletChangeListenerViewMo
       addressList.add(WalletAddressListItem(isPrimary: true, name: null, address: primaryAddress));
     }
 
+    if (wallet.type == WalletType.polygon) {
+      final primaryAddress = polygon!.getAddress(wallet);
+
+      addressList.add(WalletAddressListItem(isPrimary: true, name: null, address: primaryAddress));
+    }
+
     return addressList;
   }
 

lib/view_model/wallet_keys_view_model.dart

@@ -1,3 +1,4 @@
+import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cw_core/transaction_direction.dart';
 import 'package:cw_core/transaction_info.dart';
@@ -19,7 +20,8 @@ abstract class WalletKeysViewModelBase with Store {
       : title = _appStore.wallet!.type == WalletType.bitcoin ||
                 _appStore.wallet!.type == WalletType.litecoin ||
                 _appStore.wallet!.type == WalletType.bitcoinCash ||
-                _appStore.wallet!.type == WalletType.ethereum
+                _appStore.wallet!.type == WalletType.ethereum ||
+                _appStore.wallet!.type == WalletType.polygon
             ? S.current.wallet_seed
             : S.current.wallet_keys,
         _restoreHeight = _appStore.wallet!.walletInfo.restoreHeight,
@@ -98,7 +100,7 @@ abstract class WalletKeysViewModelBase with Store {
       ]);
     }
 
-    if (_appStore.wallet!.type == WalletType.ethereum) {
+    if (isEVMCompatibleChain(_appStore.wallet!.type)) {
       items.addAll([
         if (_appStore.wallet!.privateKey != null)
           StandartListItem(title: S.current.private_key, value: _appStore.wallet!.privateKey!),
@@ -151,6 +153,8 @@ abstract class WalletKeysViewModelBase with Store {
         return 'nano-wallet';
       case WalletType.banano:
         return 'banano-wallet';
+      case WalletType.polygon:
+        return 'polygon-wallet';
       default:
         throw Exception('Unexpected wallet type: ${_appStore.wallet!.toString()}');
     }

lib/view_model/wallet_new_vm.dart

@@ -14,6 +14,8 @@ import 'package:cake_wallet/view_model/wallet_creation_vm.dart';
 import 'package:cake_wallet/bitcoin/bitcoin.dart';
 import 'package:cake_wallet/haven/haven.dart';
 
+import '../polygon/polygon.dart';
+
 part 'wallet_new_vm.g.dart';
 
 class WalletNewVM = WalletNewVMBase with _$WalletNewVM;
@@ -52,6 +54,8 @@ abstract class WalletNewVMBase extends WalletCreationVM with Store {
         return bitcoinCash!.createBitcoinCashNewWalletCredentials(name: name);
       case WalletType.nano:
         return nano!.createNanoNewWalletCredentials(name: name);
+      case WalletType.polygon:
+        return polygon!.createPolygonNewWalletCredentials(name: name);
       default:
         throw Exception('Unexpected type: ${type.toString()}');
     }

lib/view_model/wallet_restore_view_model.dart

@@ -3,6 +3,7 @@ import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/nano/nano.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
 import 'package:cake_wallet/bitcoin_cash/bitcoin_cash.dart';
+import 'package:cake_wallet/polygon/polygon.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/store/app_store.dart';
@@ -28,7 +29,10 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
       : hasSeedLanguageSelector = type == WalletType.monero || type == WalletType.haven,
         hasBlockchainHeightLanguageSelector = type == WalletType.monero || type == WalletType.haven,
         hasRestoreFromPrivateKey =
-            type == WalletType.ethereum || type == WalletType.nano || type == WalletType.banano,
+            type == WalletType.ethereum ||
+            type == WalletType.polygon ||
+            type == WalletType.nano ||
+            type == WalletType.banano,
         isButtonEnabled = false,
         mode = WalletRestoreMode.seed,
         super(appStore, walletInfoSource, walletCreationService, type: type, isRecovery: true) {
@@ -36,6 +40,7 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
       case WalletType.monero:
       case WalletType.haven:
       case WalletType.ethereum:
+      case WalletType.polygon:
         availableModes = WalletRestoreMode.values;
         break;
       case WalletType.nano:
@@ -107,6 +112,12 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
             mnemonic: seed,
             password: password,
             derivationType: derivationType);
+        case WalletType.polygon:
+          return polygon!.createPolygonRestoreWalletFromSeedCredentials(
+            name: name,
+            mnemonic: seed,
+            password: password,
+          );
         default:
           break;
       }
@@ -153,6 +164,12 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
             password: password,
             seedKey: options['private_key'] as String,
             derivationType: options["derivationType"] as DerivationType);
+        case WalletType.polygon:
+          return polygon!.createPolygonRestoreWalletFromPrivateKey(
+            name: name,
+            password: password,
+            privateKey: options['private_key'] as String,
+          );
         default:
           break;
       }

macos/Podfile.lock

@@ -41,6 +41,7 @@ PODS:
   - shared_preferences_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
+  - tor (0.0.1)
   - url_launcher_macos (0.0.1):
     - FlutterMacOS
   - wakelock_plus (0.0.1):
@@ -59,6 +60,7 @@ DEPENDENCIES:
   - path_provider_foundation (from `Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin`)
   - share_plus_macos (from `Flutter/ephemeral/.symlinks/plugins/share_plus_macos/macos`)
   - shared_preferences_foundation (from `Flutter/ephemeral/.symlinks/plugins/shared_preferences_foundation/darwin`)
+  - tor (from `Flutter/ephemeral/.symlinks/plugins/tor/macos`)
   - url_launcher_macos (from `Flutter/ephemeral/.symlinks/plugins/url_launcher_macos/macos`)
   - wakelock_plus (from `Flutter/ephemeral/.symlinks/plugins/wakelock_plus/macos`)
 
@@ -91,6 +93,8 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/share_plus_macos/macos
   shared_preferences_foundation:
     :path: Flutter/ephemeral/.symlinks/plugins/shared_preferences_foundation/darwin
+  tor:
+    :path: Flutter/ephemeral/.symlinks/plugins/tor/macos
   url_launcher_macos:
     :path: Flutter/ephemeral/.symlinks/plugins/url_launcher_macos/macos
   wakelock_plus:
@@ -98,7 +102,7 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   connectivity_plus_macos: f6e86fd000e971d361e54b5afcadc8c8fa773308
-  cw_monero: ec03de55a19c4a2b174ea687e0f4202edc716fa4
+  cw_monero: f8b7f104508efba2591548e76b5c058d05cba3f0
   device_info_plus: 5401765fde0b8d062a2f8eb65510fb17e77cf07f
   devicelocale: 9f0f36ac651cabae2c33f32dcff4f32b61c38225
   flutter_secure_storage_macos: d56e2d218c1130b262bef8b4a7d64f88d7f9c9ea
@@ -110,6 +114,7 @@ SPEC CHECKSUMS:
   ReachabilitySwift: 985039c6f7b23a1da463388634119492ff86c825
   share_plus_macos: 853ee48e7dce06b633998ca0735d482dd671ade4
   shared_preferences_foundation: 5b919d13b803cadd15ed2dc053125c68730e5126
+  tor: 2138c48428e696b83eacdda404de6d5574932e26
   url_launcher_macos: d2691c7dd33ed713bf3544850a623080ec693d95
   wakelock_plus: 4783562c9a43d209c458cb9b30692134af456269
 

model_generator.sh

@@ -5,4 +5,5 @@ cd cw_haven && flutter pub get && flutter packages pub run build_runner build --
 cd cw_ethereum && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
 cd cw_nano && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
 cd cw_bitcoin_cash && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
+cd cw_polygon && flutter pub get && flutter packages pub run build_runner build --delete-conflicting-outputs && cd ..
 flutter packages pub run build_runner build --delete-conflicting-outputs

pubspec_base.yaml

@@ -147,6 +147,7 @@ flutter:
     - assets/bitcoin_cash_electrum_server_list.yml
     - assets/nano_node_list.yml
     - assets/nano_pow_node_list.yml
+    - assets/polygon_node_list.yml
     - assets/text/
     - assets/faq/
     - assets/animation/

res/values/strings_ar.arb

@@ -745,5 +745,6 @@
   "seedtype_polyseed": "بوليسيد (16 كلمة)",
   "seed_language_czech": "التشيكية",
   "seed_language_korean": "الكورية",
-  "seed_language_chinese_traditional": "تقاليد صينية)"
+  "seed_language_chinese_traditional": "تقاليد صينية)",
+  "polygonscan_history": "ﻥﺎﻜﺴﻧﻮﺠﻴﻟﻮﺑ ﺦﻳﺭﺎﺗ"
 }

res/values/strings_bg.arb

@@ -741,5 +741,6 @@
   "seedtype_polyseed": "Поли семе (16 думи)",
   "seed_language_czech": "Чех",
   "seed_language_korean": "Корейски",
-  "seed_language_chinese_traditional": "Традиционен китайски)"
+  "seed_language_chinese_traditional": "Традиционен китайски)",
+  "polygonscan_history": "История на PolygonScan"
 }

res/values/strings_cs.arb

@@ -741,5 +741,6 @@
   "seedtype_polyseed": "Polyseed (16 slov)",
   "seed_language_czech": "čeština",
   "seed_language_korean": "korejština",
-  "seed_language_chinese_traditional": "Číňan (tradiční)"
+  "seed_language_chinese_traditional": "Číňan (tradiční)",
+  "polygonscan_history": "Historie PolygonScan"
 }

res/values/strings_de.arb

@@ -749,5 +749,6 @@
   "seedtype_polyseed": "Polyseed (16 Wörter)",
   "seed_language_czech": "Tschechisch",
   "seed_language_korean": "Koreanisch",
-  "seed_language_chinese_traditional": "Chinesisch (Traditionell)"
+  "seed_language_chinese_traditional": "Chinesisch (Traditionell)",
+  "polygonscan_history": "PolygonScan-Verlauf"
 }

res/values/strings_en.arb

@@ -750,5 +750,6 @@
   "seedtype_polyseed": "Polyseed (16 words)",
   "seed_language_czech": "Czech",
   "seed_language_korean": "Korean",
-  "seed_language_chinese_traditional": "Chinese (Traditional)"
+  "seed_language_chinese_traditional": "Chinese (Traditional)",
+  "polygonscan_history": "PolygonScan history"
 }

res/values/strings_es.arb

@@ -749,5 +749,6 @@
   "seedtype_polyseed": "Polieta (16 palabras)",
   "seed_language_czech": "checo",
   "seed_language_korean": "coreano",
-  "seed_language_chinese_traditional": "Chino (tradicional)"
+  "seed_language_chinese_traditional": "Chino (tradicional)",
+  "polygonscan_history": "Historial de PolygonScan"
 }

res/values/strings_fr.arb

@@ -749,5 +749,6 @@
   "seedtype_polyseed": "Polyseed (16 mots)",
   "seed_language_czech": "tchèque",
   "seed_language_korean": "coréen",
-  "seed_language_chinese_traditional": "Chinois (Traditionnel)"
+  "seed_language_chinese_traditional": "Chinois (Traditionnel)",
+  "polygonscan_history": "Historique de PolygonScan"
 }

res/values/strings_ha.arb

@@ -727,5 +727,6 @@
   "seedtype_polyseed": "Polyseed (16 kalmomi)",
   "seed_language_czech": "Czech",
   "seed_language_korean": "Yaren Koriya",
-  "seed_language_chinese_traditional": "Sinanci (na gargajiya)"
+  "seed_language_chinese_traditional": "Sinanci (na gargajiya)",
+  "polygonscan_history": "PolygonScan tarihin kowane zamani"
 }

res/values/strings_hi.arb

@@ -749,5 +749,6 @@
   "seedtype_polyseed": "पॉलीसीड (16 शब्द)",
   "seed_language_czech": "चेक",
   "seed_language_korean": "कोरियाई",
-  "seed_language_chinese_traditional": "चीनी पारंपरिक)"
+  "seed_language_chinese_traditional": "चीनी पारंपरिक)",
+  "polygonscan_history": "पॉलीगॉनस्कैन इतिहास"
 }

res/values/strings_hr.arb

@@ -747,5 +747,6 @@
   "seedtype_polyseed": "Poliseed (16 riječi)",
   "seed_language_czech": "češki",
   "seed_language_korean": "korejski",
-  "seed_language_chinese_traditional": "Kinesko (tradicionalno)"
+  "seed_language_chinese_traditional": "Kinesko (tradicionalno)",
+  "polygonscan_history": "Povijest PolygonScan"
 }

res/values/strings_id.arb

@@ -737,5 +737,6 @@
   "seedtype_polyseed": "Polyseed (16 kata)",
   "seed_language_czech": "Ceko",
   "seed_language_korean": "Korea",
-  "seed_language_chinese_traditional": "Cina (tradisional)"
+  "seed_language_chinese_traditional": "Cina (tradisional)",
+  "polygonscan_history": "Sejarah PolygonScan"
 }

res/values/strings_it.arb

@@ -749,5 +749,6 @@
   "seedtype_polyseed": "Polyseed (16 parole)",
   "seed_language_czech": "ceco",
   "seed_language_korean": "coreano",
-  "seed_language_chinese_traditional": "Cinese tradizionale)"
+  "seed_language_chinese_traditional": "Cinese tradizionale)",
+  "polygonscan_history": "Cronologia PolygonScan"
 }

res/values/strings_ja.arb

@@ -749,5 +749,6 @@
   "seedtype_polyseed": "ポリシード（16語）",
   "seed_language_czech": "チェコ",
   "seed_language_korean": "韓国語",
-  "seed_language_chinese_traditional": "中国の伝統的な）"
+  "seed_language_chinese_traditional": "中国の伝統的な）",
+  "polygonscan_history": "ポリゴンスキャン履歴"
 }