diff --git a/lib/wallets/crypto_currency/coins/bitcoin.dart b/lib/wallets/crypto_currency/coins/bitcoin.dart
index d441961a7..01ce800e8 100644
--- a/lib/wallets/crypto_currency/coins/bitcoin.dart
+++ b/lib/wallets/crypto_currency/coins/bitcoin.dart
@@ -51,10 +51,10 @@ class Bitcoin extends Bip39HDCurrency with PaynymCurrencyInterface {
       );
 
   @override
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0x80,
           p2pkhPrefix: 0x00,
           p2shPrefix: 0x05,
@@ -62,9 +62,12 @@ class Bitcoin extends Bip39HDCurrency with PaynymCurrencyInterface {
           pubHDPrefix: 0x0488b21e,
           bech32Hrp: "bc",
           messagePrefix: '\x18Bitcoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(546), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       case CryptoCurrencyNetwork.test:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xef,
           p2pkhPrefix: 0x6f,
           p2shPrefix: 0xc4,
@@ -72,6 +75,9 @@ class Bitcoin extends Bip39HDCurrency with PaynymCurrencyInterface {
           pubHDPrefix: 0x043587cf,
           bech32Hrp: "tb",
           messagePrefix: "\x18Bitcoin Signed Message:\n",
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(546), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       default:
         throw Exception("Unsupported network: $network");
diff --git a/lib/wallets/crypto_currency/coins/bitcoincash.dart b/lib/wallets/crypto_currency/coins/bitcoincash.dart
index eaf40d4d0..3ae131346 100644
--- a/lib/wallets/crypto_currency/coins/bitcoincash.dart
+++ b/lib/wallets/crypto_currency/coins/bitcoincash.dart
@@ -59,10 +59,10 @@ class Bitcoincash extends Bip39HDCurrency {
       );
 
   @override
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0x80,
           p2pkhPrefix: 0x00,
           p2shPrefix: 0x05,
@@ -70,9 +70,12 @@ class Bitcoincash extends Bip39HDCurrency {
           pubHDPrefix: 0x0488b21e,
           bech32Hrp: "bc",
           messagePrefix: '\x18Bitcoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(546), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       case CryptoCurrencyNetwork.test:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xef,
           p2pkhPrefix: 0x6f,
           p2shPrefix: 0xc4,
@@ -80,6 +83,9 @@ class Bitcoincash extends Bip39HDCurrency {
           pubHDPrefix: 0x043587cf,
           bech32Hrp: "tb",
           messagePrefix: "\x18Bitcoin Signed Message:\n",
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(546), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       default:
         throw Exception("Unsupported network: $network");
diff --git a/lib/wallets/crypto_currency/coins/dogecoin.dart b/lib/wallets/crypto_currency/coins/dogecoin.dart
index 2051839e4..18670cecc 100644
--- a/lib/wallets/crypto_currency/coins/dogecoin.dart
+++ b/lib/wallets/crypto_currency/coins/dogecoin.dart
@@ -102,10 +102,10 @@ class Dogecoin extends Bip39HDCurrency {
   int get minConfirms => 1;
 
   @override
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0x9e,
           p2pkhPrefix: 0x1e,
           p2shPrefix: 0x16,
@@ -113,9 +113,12 @@ class Dogecoin extends Bip39HDCurrency {
           pubHDPrefix: 0x02facafd,
           bech32Hrp: "doge",
           messagePrefix: '\x18Dogecoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       case CryptoCurrencyNetwork.test:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xf1,
           p2pkhPrefix: 0x71,
           p2shPrefix: 0xc4,
@@ -123,6 +126,9 @@ class Dogecoin extends Bip39HDCurrency {
           pubHDPrefix: 0x043587cf,
           bech32Hrp: "tdge",
           messagePrefix: "\x18Dogecoin Signed Message:\n",
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       default:
         throw Exception("Unsupported network: $network");
diff --git a/lib/wallets/crypto_currency/coins/ecash.dart b/lib/wallets/crypto_currency/coins/ecash.dart
index 07e164c6e..36d24ac82 100644
--- a/lib/wallets/crypto_currency/coins/ecash.dart
+++ b/lib/wallets/crypto_currency/coins/ecash.dart
@@ -57,10 +57,10 @@ class Ecash extends Bip39HDCurrency {
       );
 
   @override
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0x80,
           p2pkhPrefix: 0x00,
           p2shPrefix: 0x05,
@@ -68,9 +68,12 @@ class Ecash extends Bip39HDCurrency {
           pubHDPrefix: 0x0488b21e,
           bech32Hrp: "bc",
           messagePrefix: '\x18Bitcoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       case CryptoCurrencyNetwork.test:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xef,
           p2pkhPrefix: 0x6f,
           p2shPrefix: 0xc4,
@@ -78,6 +81,9 @@ class Ecash extends Bip39HDCurrency {
           pubHDPrefix: 0x043587cf,
           bech32Hrp: "tb",
           messagePrefix: "\x18Bitcoin Signed Message:\n",
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       default:
         throw Exception("Unsupported network: $network");
diff --git a/lib/wallets/crypto_currency/coins/firo.dart b/lib/wallets/crypto_currency/coins/firo.dart
index 82eb8ab39..ab008ec6e 100644
--- a/lib/wallets/crypto_currency/coins/firo.dart
+++ b/lib/wallets/crypto_currency/coins/firo.dart
@@ -48,10 +48,10 @@ class Firo extends Bip39HDCurrency {
       );
 
   @override
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xd2,
           p2pkhPrefix: 0x52,
           p2shPrefix: 0x07,
@@ -59,9 +59,12 @@ class Firo extends Bip39HDCurrency {
           pubHDPrefix: 0x0488b21e,
           bech32Hrp: "bc",
           messagePrefix: '\x18Zcoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       case CryptoCurrencyNetwork.test:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xb9,
           p2pkhPrefix: 0x41,
           p2shPrefix: 0xb2,
@@ -69,6 +72,9 @@ class Firo extends Bip39HDCurrency {
           pubHDPrefix: 0x043587cf,
           bech32Hrp: "tb",
           messagePrefix: "\x18Zcoin Signed Message:\n",
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       default:
         throw Exception("Unsupported network: $network");
diff --git a/lib/wallets/crypto_currency/coins/litecoin.dart b/lib/wallets/crypto_currency/coins/litecoin.dart
index 5c964db5a..c8ccf9281 100644
--- a/lib/wallets/crypto_currency/coins/litecoin.dart
+++ b/lib/wallets/crypto_currency/coins/litecoin.dart
@@ -55,10 +55,10 @@ class Litecoin extends Bip39HDCurrency {
       );
 
   @override
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xb0,
           p2pkhPrefix: 0x30,
           p2shPrefix: 0x32,
@@ -66,9 +66,12 @@ class Litecoin extends Bip39HDCurrency {
           pubHDPrefix: 0x0488b21e,
           bech32Hrp: "ltc",
           messagePrefix: '\x19Litecoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       case CryptoCurrencyNetwork.test:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xef,
           p2pkhPrefix: 0x6f,
           p2shPrefix: 0x3a,
@@ -76,6 +79,9 @@ class Litecoin extends Bip39HDCurrency {
           pubHDPrefix: 0x043587cf,
           bech32Hrp: "tltc",
           messagePrefix: "\x19Litecoin Signed Message:\n",
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       default:
         throw Exception("Unsupported network: $network");
diff --git a/lib/wallets/crypto_currency/coins/namecoin.dart b/lib/wallets/crypto_currency/coins/namecoin.dart
index ce5906ee3..4353d70db 100644
--- a/lib/wallets/crypto_currency/coins/namecoin.dart
+++ b/lib/wallets/crypto_currency/coins/namecoin.dart
@@ -143,10 +143,10 @@ class Namecoin extends Bip39HDCurrency {
 
   @override
   // See https://github.com/cypherstack/stack_wallet/blob/621aff47969761014e0a6c4e699cb637d5687ab3/lib/services/coins/namecoin/namecoin_wallet.dart#L3474
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0xb4, // From 180.
           p2pkhPrefix: 0x34, // From 52.
           p2shPrefix: 0x0d, // From 13.
@@ -154,6 +154,9 @@ class Namecoin extends Bip39HDCurrency {
           pubHDPrefix: 0x0488b21e,
           bech32Hrp: "nc",
           messagePrefix: '\x18Namecoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       // case CryptoCurrencyNetwork.test:
       // TODO: [prio=low] Add testnet support.
diff --git a/lib/wallets/crypto_currency/coins/particl.dart b/lib/wallets/crypto_currency/coins/particl.dart
index 32da6e1f3..57e0b97cf 100644
--- a/lib/wallets/crypto_currency/coins/particl.dart
+++ b/lib/wallets/crypto_currency/coins/particl.dart
@@ -125,10 +125,10 @@ class Particl extends Bip39HDCurrency {
 
   @override
   // See https://github.com/cypherstack/stack_wallet/blob/d08b5c9b22b58db800ad07b2ceeb44c6d05f9cf3/lib/services/coins/particl/particl_wallet.dart#L3532
-  coinlib.NetworkParams get networkParams {
+  coinlib.Network get networkParams {
     switch (network) {
       case CryptoCurrencyNetwork.main:
-        return const coinlib.NetworkParams(
+        return coinlib.Network(
           wifPrefix: 0x6c,
           p2pkhPrefix: 0x38,
           p2shPrefix: 0x3c,
@@ -136,6 +136,9 @@ class Particl extends Bip39HDCurrency {
           pubHDPrefix: 0x696e82d1,
           bech32Hrp: "pw",
           messagePrefix: '\x18Bitcoin Signed Message:\n',
+          minFee: BigInt.from(1), // TODO [prio=high].
+          minOutput: BigInt.from(1), // TODO.
+          feePerKb: BigInt.from(1), // TODO.
         );
       // case CryptoCurrencyNetwork.test:
       // TODO: [prio=low] Add testnet.
diff --git a/lib/wallets/crypto_currency/intermediate/bip39_hd_currency.dart b/lib/wallets/crypto_currency/intermediate/bip39_hd_currency.dart
index a2899d149..fa5d5c796 100644
--- a/lib/wallets/crypto_currency/intermediate/bip39_hd_currency.dart
+++ b/lib/wallets/crypto_currency/intermediate/bip39_hd_currency.dart
@@ -11,7 +11,7 @@ import 'package:stackwallet/wallets/crypto_currency/intermediate/bip39_currency.
 abstract class Bip39HDCurrency extends Bip39Currency {
   Bip39HDCurrency(super.network);
 
-  coinlib.NetworkParams get networkParams;
+  coinlib.Network get networkParams;
 
   Amount get dustLimit;