diff --git a/src/base/net/stratum/DaemonClient.cpp b/src/base/net/stratum/DaemonClient.cpp
index 43493e752..c1d3d3a41 100644
--- a/src/base/net/stratum/DaemonClient.cpp
+++ b/src/base/net/stratum/DaemonClient.cpp
@@ -96,7 +96,7 @@ bool xmrig::DaemonClient::isTLS() const
 
 int64_t xmrig::DaemonClient::submit(const JobResult &result)
 {
-    if (result.jobId != (m_blocktemplateStr.data() + m_blocktemplateStr.size() - 32)) {
+    if (result.jobId != m_currentJobId) {
         return -1;
     }
 
@@ -114,6 +114,10 @@ int64_t xmrig::DaemonClient::submit(const JobResult &result)
         memcpy(data + m_blocktemplate.eph_public_key_index * 2, result.sig_data + 32 * 2, 32 * 2);
     }
 
+    if (result.extra_nonce >= 0) {
+        Cvt::toHex(data + m_blocktemplate.tx_extra_nonce_index * 2, 8, reinterpret_cast<const uint8_t*>(&result.extra_nonce), 4);
+    }
+
 #   else
 
     Cvt::toHex(data + m_job.nonceOffset() * 2, 8, reinterpret_cast<const uint8_t*>(&result.nonce), 4);
@@ -277,6 +281,19 @@ bool xmrig::DaemonClient::parseJob(const rapidjson::Value &params, int *code)
         return false;
     }
 
+#   ifdef XMRIG_PROXY_PROJECT
+    const size_t k = m_blocktemplate.miner_tx_prefix_begin_index;
+    job.setMinerTx(
+        m_blocktemplate.raw_blob.data() + k,
+        m_blocktemplate.raw_blob.data() + m_blocktemplate.miner_tx_prefix_end_index,
+        m_blocktemplate.eph_public_key_index - k,
+        m_blocktemplate.tx_pubkey_index - k,
+        m_blocktemplate.tx_extra_nonce_index - k,
+        m_blocktemplate.tx_extra_nonce_size,
+        m_blocktemplate.miner_tx_merkle_tree_branch
+    );
+#   endif
+
     m_blockhashingblob = Json::getString(params, "blockhashing_blob");
 
     if (m_blocktemplate.has_miner_signature) {
@@ -308,13 +325,6 @@ bool xmrig::DaemonClient::parseJob(const rapidjson::Value &params, int *code)
 
 #       ifdef XMRIG_PROXY_PROJECT
         job.setSpendSecretKey(secret_spendkey);
-        job.setMinerTx(
-            m_blocktemplate.raw_blob.data() + m_blocktemplate.miner_tx_prefix_begin_index,
-            m_blocktemplate.raw_blob.data() + m_blocktemplate.miner_tx_prefix_end_index,
-            m_blocktemplate.eph_public_key_index - m_blocktemplate.miner_tx_prefix_begin_index,
-            m_blocktemplate.tx_pubkey_index - m_blocktemplate.miner_tx_prefix_begin_index,
-            m_blocktemplate.miner_tx_merkle_tree_branch
-        );
 #       else
         uint8_t secret_viewkey[32];
         derive_view_secret_key(secret_spendkey, secret_viewkey);
@@ -377,7 +387,8 @@ bool xmrig::DaemonClient::parseJob(const rapidjson::Value &params, int *code)
     job.setHeight(Json::getUint64(params, kHeight));
     job.setDiff(Json::getUint64(params, "difficulty"));
 
-    job.setId(blocktemplate.data() + blocktemplate.size() - 32);
+    m_currentJobId = Cvt::toHex(Cvt::randomBytes(4));
+    job.setId(m_currentJobId);
 
     m_job              = std::move(job);
     m_blocktemplateStr = std::move(blocktemplate);
diff --git a/src/base/net/stratum/DaemonClient.h b/src/base/net/stratum/DaemonClient.h
index 45a844646..f701240e5 100644
--- a/src/base/net/stratum/DaemonClient.h
+++ b/src/base/net/stratum/DaemonClient.h
@@ -84,6 +84,7 @@ private:
     } m_apiVersion = API_MONERO;
 
     std::shared_ptr<IHttpListener> m_httpListener;
+    String m_currentJobId;
     String m_blocktemplateStr;
     String m_blockhashingblob;
     String m_prevHash;
diff --git a/src/base/net/stratum/Job.cpp b/src/base/net/stratum/Job.cpp
index 5e0c0f489..920bf95f7 100644
--- a/src/base/net/stratum/Job.cpp
+++ b/src/base/net/stratum/Job.cpp
@@ -201,6 +201,8 @@ void xmrig::Job::copy(const Job &other)
     m_minerTxPrefix = other.m_minerTxPrefix;
     m_minerTxEphPubKeyOffset = other.m_minerTxEphPubKeyOffset;
     m_minerTxPubKeyOffset = other.m_minerTxPubKeyOffset;
+    m_minerTxExtraNonceOffset = other.m_minerTxExtraNonceOffset;
+    m_minerTxExtraNonceSize = other.m_minerTxExtraNonceSize;
     m_minerTxMerkleTreeBranch = other.m_minerTxMerkleTreeBranch;
 #   else
     memcpy(m_ephPublicKey, other.m_ephPublicKey, sizeof(m_ephPublicKey));
@@ -254,6 +256,8 @@ void xmrig::Job::move(Job &&other)
     m_minerTxPrefix             = std::move(other.m_minerTxPrefix);
     m_minerTxEphPubKeyOffset    = other.m_minerTxEphPubKeyOffset;
     m_minerTxPubKeyOffset       = other.m_minerTxPubKeyOffset;
+    m_minerTxExtraNonceOffset   = other.m_minerTxExtraNonceOffset;
+    m_minerTxExtraNonceSize     = other.m_minerTxExtraNonceSize;
     m_minerTxMerkleTreeBranch   = std::move(other.m_minerTxMerkleTreeBranch);
 #   else
     memcpy(m_ephPublicKey, other.m_ephPublicKey, sizeof(m_ephPublicKey));
@@ -278,16 +282,24 @@ void xmrig::Job::setSpendSecretKey(const uint8_t *key)
 }
 
 
-void xmrig::Job::setMinerTx(const uint8_t *begin, const uint8_t *end, size_t minerTxEphPubKeyOffset, size_t minerTxPubKeyOffset, const Buffer &minerTxMerkleTreeBranch)
+void xmrig::Job::setMinerTx(const uint8_t *begin, const uint8_t *end, size_t minerTxEphPubKeyOffset, size_t minerTxPubKeyOffset, size_t minerTxExtraNonceOffset, size_t minerTxExtraNonceSize, const Buffer &minerTxMerkleTreeBranch)
 {
     m_minerTxPrefix.assign(begin, end);
     m_minerTxEphPubKeyOffset    = minerTxEphPubKeyOffset;
     m_minerTxPubKeyOffset       = minerTxPubKeyOffset;
+    m_minerTxExtraNonceOffset   = minerTxExtraNonceOffset;
+    m_minerTxExtraNonceSize     = minerTxExtraNonceSize;
     m_minerTxMerkleTreeBranch   = minerTxMerkleTreeBranch;
 }
 
 
-void xmrig::Job::generateHashingBlob(String &signatureData)
+void xmrig::Job::setExtraNonceInMinerTx(uint32_t extra_nonce)
+{
+    memcpy(m_minerTxPrefix.data() + m_minerTxExtraNonceOffset, &extra_nonce, std::min(m_minerTxExtraNonceSize, sizeof(uint32_t)));
+}
+
+
+void xmrig::Job::generateSignatureData(String &signatureData) const
 {
     uint8_t* eph_public_key = m_minerTxPrefix.data() + m_minerTxEphPubKeyOffset;
     uint8_t* txkey_pub = m_minerTxPrefix.data() + m_minerTxPubKeyOffset;
@@ -309,13 +321,22 @@ void xmrig::Job::generateHashingBlob(String &signatureData)
     derive_secret_key(derivation, 0, m_spendSecretKey, buf + 64);
 
     signatureData = Cvt::toHex(buf, sizeof(buf));
+}
 
+void xmrig::Job::generateHashingBlob(String &blob) const
+{
     uint8_t root_hash[32];
     const uint8_t* p = m_minerTxPrefix.data();
     BlockTemplate::CalculateRootHash(p, p + m_minerTxPrefix.size(), m_minerTxMerkleTreeBranch, root_hash);
 
-    const uint64_t offset = nonceOffset() + nonceSize() + BlockTemplate::SIGNATURE_SIZE + 2 /* vote */;
-    Cvt::toHex(m_rawBlob + offset * 2, 64, root_hash, 32);
+    uint64_t root_hash_offset = nonceOffset() + nonceSize();
+
+    if (m_hasMinerSignature) {
+        root_hash_offset += BlockTemplate::SIGNATURE_SIZE + 2 /* vote */;
+    }
+
+    blob = rawBlob();
+    Cvt::toHex(blob.data() + root_hash_offset * 2, 64, root_hash, BlockTemplate::HASH_SIZE);
 }
 
 
diff --git a/src/base/net/stratum/Job.h b/src/base/net/stratum/Job.h
index 42e6947f3..c72902756 100644
--- a/src/base/net/stratum/Job.h
+++ b/src/base/net/stratum/Job.h
@@ -119,9 +119,11 @@ public:
 #   endif
 
 #   ifdef XMRIG_PROXY_PROJECT
-    void setSpendSecretKey(const uint8_t *key);
-    void setMinerTx(const uint8_t *begin, const uint8_t *end, size_t minerTxEphPubKeyOffset, size_t minerTxPubKeyOffset, const Buffer &minerTxMerkleTreeBranch);
-    void generateHashingBlob(String &signatureData);
+    void setSpendSecretKey(const uint8_t* key);
+    void setMinerTx(const uint8_t* begin, const uint8_t* end, size_t minerTxEphPubKeyOffset, size_t minerTxPubKeyOffset, size_t minerTxExtraNonceOffset, size_t minerTxExtraNonceSize, const Buffer& minerTxMerkleTreeBranch);
+    void setExtraNonceInMinerTx(uint32_t extra_nonce);
+    void generateSignatureData(String& signatureData) const;
+    void generateHashingBlob(String& blob) const;
 #   else
     inline const uint8_t* ephSecretKey() const { return m_hasMinerSignature ? m_ephSecretKey : nullptr; }
 
@@ -170,6 +172,8 @@ private:
     mutable Buffer m_minerTxPrefix;
     size_t m_minerTxEphPubKeyOffset = 0;
     size_t m_minerTxPubKeyOffset = 0;
+    size_t m_minerTxExtraNonceOffset = 0;
+    size_t m_minerTxExtraNonceSize = 0;
     Buffer m_minerTxMerkleTreeBranch;
 #   else
     // Miner signatures
diff --git a/src/base/tools/cryptonote/BlobReader.h b/src/base/tools/cryptonote/BlobReader.h
index 58f81e2dd..f10bcd88b 100644
--- a/src/base/tools/cryptonote/BlobReader.h
+++ b/src/base/tools/cryptonote/BlobReader.h
@@ -61,6 +61,8 @@ public:
 
     inline size_t index() const { return m_index; }
 
+    inline void skip(size_t N) { m_index += N; }
+
 private:
     inline bool getByte(uint8_t& data)
     {
diff --git a/src/base/tools/cryptonote/BlockTemplate.cpp b/src/base/tools/cryptonote/BlockTemplate.cpp
index 0b54c3998..5449ec23c 100644
--- a/src/base/tools/cryptonote/BlockTemplate.cpp
+++ b/src/base/tools/cryptonote/BlockTemplate.cpp
@@ -86,13 +86,35 @@ bool BlockTemplate::Init(const String& blockTemplate, Coin coin)
     ar(eph_public_key);
     ar(extra_size);
 
-    tx_pubkey_index = ar.index() + 1;
+    const uint64_t tx_extra_index = ar.index();
 
     ar.readItems(extra, extra_size);
 
-    // First thing in tx_extra must be TX_EXTRA_TAG_PUBKEY
-    if (extra[0] != 0x01)
-        return false;
+    CBlobReader ar_extra(extra.data(), extra_size);
+
+    tx_extra_nonce_size = 0;
+    tx_extra_nonce_index = 0;
+
+    while (ar_extra.index() < extra_size) {
+        uint64_t extra_tag;
+        ar_extra(extra_tag);
+
+        switch (extra_tag) {
+        case 0x01: // TX_EXTRA_TAG_PUBKEY
+            tx_pubkey_index = tx_extra_index + ar_extra.index();
+            ar_extra.skip(KEY_SIZE);
+            break;
+
+        case 0x02: // TX_EXTRA_NONCE
+            ar_extra(tx_extra_nonce_size);
+            tx_extra_nonce_index = tx_extra_index + ar_extra.index();
+            ar_extra.skip(tx_extra_nonce_size);
+            break;
+
+        default:
+            return false; // TODO: handle other tags
+        }
+    }
 
     miner_tx_prefix_end_index = ar.index();
     // Prefix end
diff --git a/src/base/tools/cryptonote/BlockTemplate.h b/src/base/tools/cryptonote/BlockTemplate.h
index e80ece141..4a6ef8051 100644
--- a/src/base/tools/cryptonote/BlockTemplate.h
+++ b/src/base/tools/cryptonote/BlockTemplate.h
@@ -42,6 +42,8 @@ struct BlockTemplate
     Buffer raw_blob;
     size_t eph_public_key_index;
     size_t tx_pubkey_index;
+    uint64_t tx_extra_nonce_size;
+    size_t tx_extra_nonce_index;
     size_t miner_tx_prefix_begin_index;
     size_t miner_tx_prefix_end_index;