Fixing miner issues

- Switch from full-block to header-only (140-byte) RandomX input - Add 32-byte SoloNonce system for solo mining mode - Compute proper difficulty target from compact bits field - Add SHA256D dual-hash PoW check in CpuWorker for solo mining - Raise RandomX dataset/scratchpad limits to 4GB/4MB - Use standard RandomX share filtering in pool (stratum) mode
cleanup
2026-03-05 06:00:55 -06:00 · 2026-02-28 00:33:09 -06:00 · 2026-02-26 23:48:10 -06:00 · 2026-01-27 16:45:21 -06:00
34 changed files with 1665 additions and 54 deletions
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -17,9 +17,9 @@ Steps to reproduce the behavior.
 A clear and concise description of what you expected to happen.

 **Required data**
- - XMRig version
-    - Either the exact link to a release you downloaded from https://github.com/xmrig/xmrig/releases
-    - Or the exact command lines that you used to build XMRig
+ - XMRig-HAC version
+    - Either the exact link to a release you downloaded from https://git.hush.is/dragonx/xmrig-hac/releases
+    - Or the exact command lines that you used to build XMRig-HAC
 - Miner log as text or screenshot
 - Config file or command line (without wallets)
 - OS: [e.g. Windows]
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,39 @@
+# Build output
 /build
+/build-windows
 scripts/build
+
+# Dependencies
+/deps-windows
 scripts/deps
+
+# IDE / editor
 /CMakeLists.txt.user
 /.idea
-/src/backend/opencl/cl/cn/cryptonight_gen.cl
 .vscode
 /.qtcreator
+
+# Mining config (contains pool/wallet settings — copy config.example.json)
+src/config.json
+
+# Build artifacts (safety net)
+*.o
+*.a
+*.so
+*.dll
+*.exe
+
+# Logs
+*.log
+
+# Dependency tarballs
+*.tar.gz
+
+# Generated OpenCL
+/src/backend/opencl/cl/cn/cryptonight_gen.cl
+
+# OS files
+.DS_Store
+Thumbs.db
+*.swp
+*~
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+# XMRig-HAC Fork
+- Added **DragonX** coin support
+- Added **rx/hush** algorithm (RandomX-HUSH variant for HUSH/DragonX)
+- Customized RandomX configuration for HUSH/DragonX mining
+- Based on XMRig v6.25.0
+
+---
+
 # v6.25.0
 - [#3680](https://github.com/xmrig/xmrig/pull/3680) Added `armv8l` to the list of 32-bit ARM targets.
 - [#3708](https://github.com/xmrig/xmrig/pull/3708) Minor Aarch64 JIT changes (better instruction selection, don't emit instructions that add 0, etc).
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,6 +91,7 @@ set(HEADERS_CRYPTO
    src/crypto/common/HugePagesInfo.h
    src/crypto/common/MemoryPool.h
    src/crypto/common/Nonce.h
+    src/crypto/common/SoloNonce.h
    src/crypto/common/portable/mm_malloc.h
    src/crypto/common/VirtualMemory.h
   )
@@ -128,6 +129,7 @@ set(SOURCES_CRYPTO
    src/crypto/common/HugePagesInfo.cpp
    src/crypto/common/MemoryPool.cpp
    src/crypto/common/Nonce.cpp
+    src/crypto/common/SoloNonce.cpp
    src/crypto/common/VirtualMemory.cpp
   )

@@ -162,7 +164,7 @@ if (XMRIG_OS_WIN)
        src/crypto/common/VirtualMemory_win.cpp
        )

-    set(EXTRA_LIBS ws2_32 psapi iphlpapi userenv dbghelp)
+    set(EXTRA_LIBS ws2_32 psapi iphlpapi userenv dbghelp bcrypt)
 elseif (XMRIG_OS_APPLE)
    list(APPEND SOURCES_OS
        src/App_unix.cpp
--- a/README.md
+++ b/README.md
@@ -1,13 +1,17 @@
-# XMRig
+# XMRig-HAC

-[![Github All Releases](https://img.shields.io/github/downloads/xmrig/xmrig/total.svg)](https://github.com/xmrig/xmrig/releases)
-[![GitHub release](https://img.shields.io/github/release/xmrig/xmrig/all.svg)](https://github.com/xmrig/xmrig/releases)
-[![GitHub Release Date](https://img.shields.io/github/release-date/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/releases)
-[![GitHub license](https://img.shields.io/github/license/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/blob/master/LICENSE)
-[![GitHub stars](https://img.shields.io/github/stars/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/stargazers)
-[![GitHub forks](https://img.shields.io/github/forks/xmrig/xmrig.svg)](https://github.com/xmrig/xmrig/network)
+XMRig-HAC is a fork of [XMRig](https://github.com/xmrig/xmrig) with added support for **DragonX** coin mining using the **rx/hush** (RandomX-HUSH) algorithm.

-XMRig is a high performance, open source, cross platform RandomX, KawPow, CryptoNight and [GhostRider](https://github.com/xmrig/xmrig/tree/master/src/crypto/ghostrider#readme) unified CPU/GPU miner and [RandomX benchmark](https://xmrig.com/benchmark). Official binaries are available for Windows, Linux, macOS and FreeBSD.
+**Repository:** [git.hush.is/dragonx/xmrig-hac](https://git.hush.is/dragonx/xmrig-hac)
+
+## Fork Changes
+
+This fork adds:
+- **DragonX** coin support
+- **rx/hush** algorithm (RandomX-HUSH variant)
+- Customized RandomX configuration for HUSH/DragonX
+
+Based on XMRig v6.25.0.

 ## Mining backends
 - **CPU** (x86/x64/ARMv7/ARMv8/RISC-V)
@@ -15,7 +19,7 @@ XMRig is a high performance, open source, cross platform RandomX, KawPow, Crypto
 - **CUDA** for NVIDIA GPUs via external [CUDA plugin](https://github.com/xmrig/xmrig-cuda).

 ## Download
-* **[Binary releases](https://github.com/xmrig/xmrig/releases)**
+* **[Binary releases](https://git.hush.is/dragonx/xmrig-hac/releases)**
 * **[Build from source](https://xmrig.com/docs/miner/build)**

 ## Usage
@@ -24,15 +28,8 @@ The preferred way to configure the miner is the [JSON config file](https://xmrig
 * **[Wizard](https://xmrig.com/wizard)** helps you create initial configuration for the miner.
 * **[Workers](http://workers.xmrig.info)** helps manage your miners via HTTP API.

-## Donations
-* Default donation 1% (1 minute in 100 minutes) can be increased via option `donate-level` or disabled in source code.
-* XMR: `48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD`
+## Credits

-## Developers
+This fork is based on [XMRig](https://github.com/xmrig/xmrig) by:
 * **[xmrig](https://github.com/xmrig)**
 * **[sech1](https://github.com/SChernykh)**
-
-## Contacts
-* support@xmrig.com
-* [reddit](https://www.reddit.com/user/XMRig/)
-* [twitter](https://twitter.com/xmrig_dev)
--- a/cmake/OpenSSL.cmake
+++ b/cmake/OpenSSL.cmake
@@ -14,8 +14,20 @@ if (WITH_TLS)
        set(OPENSSL_USE_STATIC_LIBS TRUE)
    endif()

+    # For cross-compilation, allow manual specification of OpenSSL paths
+    if (CMAKE_CROSSCOMPILING AND XMRIG_DEPS)
+        set(OPENSSL_INCLUDE_DIR "${XMRIG_DEPS}/include" CACHE PATH "OpenSSL include dir")
+        set(OPENSSL_CRYPTO_LIBRARY "${XMRIG_DEPS}/lib/libcrypto.a" CACHE FILEPATH "OpenSSL crypto lib")
+        set(OPENSSL_SSL_LIBRARY "${XMRIG_DEPS}/lib/libssl.a" CACHE FILEPATH "OpenSSL ssl lib")
+        if (EXISTS "${OPENSSL_CRYPTO_LIBRARY}" AND EXISTS "${OPENSSL_SSL_LIBRARY}" AND EXISTS "${OPENSSL_INCLUDE_DIR}/openssl/ssl.h")
+            set(OPENSSL_FOUND TRUE)
+            set(OPENSSL_LIBRARIES ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
+        endif()
+    endif()

-    find_package(OpenSSL)
+    if (NOT OPENSSL_FOUND)
+        find_package(OpenSSL)
+    endif()

    if (OPENSSL_FOUND)
        set(TLS_SOURCES
--- a/cmake/mingw-w64-toolchain.cmake
+++ b/cmake/mingw-w64-toolchain.cmake
@@ -0,0 +1,19 @@
+# CMake Toolchain file for cross-compiling to Windows using MinGW-w64
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+# Specify the cross compiler
+set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc-posix)
+set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++-posix)
+set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+
+# Target environment on the build host system
+set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
+
+# Adjust the default behaviour of the FIND_XXX() commands:
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+
+# Search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
--- a/doc/api/1/config.json
+++ b/doc/api/1/config.json
@@ -20,7 +20,7 @@
    "pools": [
        {
            "url": "pool.monero.hashvault.pro:3333",
-            "user": "48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD",
+            "user": "YOUR_WALLET_ADDRESS",
            "pass": "x",
            "keepalive": false,
            "nicehash": false,
@@ -28,7 +28,7 @@
        },
        {
            "url": "pool.supportxmr.com:3333",
-            "user": "48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD",
+            "user": "YOUR_WALLET_ADDRESS",
            "pass": "x",
            "keepalive": false,
            "nicehash": false,
--- a/package.json
+++ b/package.json
@@ -11,13 +11,13 @@
  },
  "repository": {
    "type": "git",
-    "url": "git+https://github.com/xmrig/xmrig.git"
+    "url": "git+https://git.hush.is/dragonx/xmrig-hac.git"
  },
  "keywords": [],
  "author": "",
  "license": "GPLv3",
  "bugs": {
-    "url": "https://github.com/xmrig/xmrig/issues"
+    "url": "https://git.hush.is/dragonx/xmrig-hac/issues"
  },
-  "homepage": "https://github.com/xmrig/xmrig#readme"
+  "homepage": "https://git.hush.is/dragonx/xmrig-hac#readme"
 }
--- a/scripts/build_windows.sh
+++ b/scripts/build_windows.sh
@@ -0,0 +1,112 @@
+#!/bin/bash
+# XMRig Windows Cross-Compilation Build Script
+# Builds xmrig for Windows using MinGW-w64 on Linux
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+XMRIG_DIR="$(dirname "$SCRIPT_DIR")"
+BUILD_DIR="$XMRIG_DIR/build-windows"
+DEPS_DIR="$XMRIG_DIR/deps-windows"
+OPENSSL_VERSION="1.1.1w"
+
+echo "=== XMRig Windows Build ==="
+echo "Source: $XMRIG_DIR"
+echo "Build:  $BUILD_DIR"
+echo "Deps:   $DEPS_DIR"
+
+# Check for MinGW-w64
+if ! command -v x86_64-w64-mingw32-gcc-posix &> /dev/null; then
+    echo "Error: MinGW-w64 not found. Install with:"
+    echo "  sudo apt install mingw-w64"
+    exit 1
+fi
+
+# Create directories
+mkdir -p "$BUILD_DIR"
+mkdir -p "$DEPS_DIR/include"
+mkdir -p "$DEPS_DIR/lib"
+
+# Build OpenSSL if needed
+if [ ! -f "$DEPS_DIR/lib/libssl.a" ]; then
+    echo "=== Building OpenSSL $OPENSSL_VERSION ==="
+    cd "$DEPS_DIR"
+    
+    if [ ! -f "openssl-${OPENSSL_VERSION}.tar.gz" ]; then
+        wget "https://openssl.org/source/old/1.1.1/openssl-${OPENSSL_VERSION}.tar.gz"
+    fi
+    
+    if [ ! -d "openssl-${OPENSSL_VERSION}" ]; then
+        tar -xzf "openssl-${OPENSSL_VERSION}.tar.gz"
+    fi
+    
+    cd "openssl-${OPENSSL_VERSION}"
+    
+    # Configure for Windows cross-compilation
+    ./Configure mingw64 \
+        --cross-compile-prefix=x86_64-w64-mingw32- \
+        no-shared \
+        no-asm \
+        no-zlib \
+        no-comp \
+        --prefix="$DEPS_DIR"
+    
+    make -j$(nproc)
+    make install_sw
+    cd "$DEPS_DIR"
+fi
+
+# Build libuv if needed
+if [ ! -f "$DEPS_DIR/lib/libuv.a" ]; then
+    echo "=== Building libuv dependency ==="
+    cd "$DEPS_DIR"
+    
+    if [ ! -d "libuv-v1.51.0" ]; then
+        if [ ! -f "libuv.tar.gz" ]; then
+            curl -L -o libuv.tar.gz https://github.com/libuv/libuv/archive/refs/tags/v1.51.0.tar.gz
+        fi
+        tar -xzf libuv.tar.gz
+    fi
+    
+    cd libuv-v1.51.0
+    mkdir -p build && cd build
+    cmake .. \
+        -DCMAKE_TOOLCHAIN_FILE="$XMRIG_DIR/cmake/mingw-w64-toolchain.cmake" \
+        -DCMAKE_INSTALL_PREFIX="$DEPS_DIR" \
+        -DLIBUV_BUILD_SHARED=OFF \
+        -DBUILD_TESTING=OFF
+    make -j$(nproc)
+    make install
+fi
+
+cd "$BUILD_DIR"
+
+echo "=== Configuring XMRig ==="
+cmake "$XMRIG_DIR" \
+    -DCMAKE_TOOLCHAIN_FILE="$XMRIG_DIR/cmake/mingw-w64-toolchain.cmake" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DBUILD_STATIC=ON \
+    -DWITH_TLS=ON \
+    -DWITH_HWLOC=OFF \
+    -DWITH_OPENCL=OFF \
+    -DWITH_CUDA=OFF \
+    -DXMRIG_DEPS="$DEPS_DIR" \
+    -DOPENSSL_ROOT_DIR:PATH="$DEPS_DIR" \
+    -DOPENSSL_INCLUDE_DIR:PATH="$DEPS_DIR/include" \
+    -DOPENSSL_CRYPTO_LIBRARY:FILEPATH="$DEPS_DIR/lib/libcrypto.a" \
+    -DOPENSSL_SSL_LIBRARY:FILEPATH="$DEPS_DIR/lib/libssl.a" \
+    -DOPENSSL_LIBRARIES="$DEPS_DIR/lib/libssl.a;$DEPS_DIR/lib/libcrypto.a" \
+    -DUV_INCLUDE_DIR="$DEPS_DIR/include" \
+    -DUV_LIBRARY="$DEPS_DIR/lib/libuv.a"
+
+echo "=== Building XMRig ==="
+make -j$(nproc)
+
+# Strip the executable
+x86_64-w64-mingw32-strip xmrig.exe 2>/dev/null || true
+
+echo ""
+echo "=== Build Complete ==="
+ls -la *.exe 2>/dev/null || echo "Executable not found"
+echo ""
+echo "Copy the .exe and WinRing0x64.sys to Windows to run"
--- a/scripts/pool_mine_example.cmd
+++ b/scripts/pool_mine_example.cmd
@@ -16,5 +16,5 @@
 :: Smaller pools also often have smaller fees/payout limits.

 cd /d "%~dp0"
-xmrig.exe -o xmrpool.eu:3333 -u 48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD -p x
+xmrig.exe -o xmrpool.eu:3333 -u YOUR_WALLET_ADDRESS -p x
 pause
--- a/scripts/solo_mine_example.cmd
+++ b/scripts/solo_mine_example.cmd
@@ -12,5 +12,5 @@
 :: But you will only get a payout when you find a block which can take more than a year for a single low-end PC.

 cd /d "%~dp0"
-xmrig.exe -o YOUR_NODE_IP:18081 -a rx/0 -u 48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD --daemon
+xmrig.exe -o YOUR_NODE_IP:18081 -a rx/0 -u YOUR_WALLET_ADDRESS --daemon
 pause
--- a/src/backend/common/WorkerJob.h
+++ b/src/backend/common/WorkerJob.h
@@ -32,6 +32,7 @@
 #include "base/net/stratum/Job.h"
 #include "base/tools/Alignment.h"
 #include "crypto/common/Nonce.h"
+#include "crypto/common/SoloNonce.h"


 namespace xmrig {
@@ -89,6 +90,29 @@ public:
    inline int32_t nonceOffset() const { return currentJob().nonceOffset(); }
    inline size_t nonceSize() const { return currentJob().nonceSize(); }

+    // Solo mining nonce management
+    inline bool isSoloMining() const { return m_isSoloMining; }
+    inline void setSoloMining(bool solo) { m_isSoloMining = solo; }
+    inline uint8_t* soloNonce(size_t i = 0) { return m_soloNonces[index()] + i * 32; }
+    inline const uint8_t* soloNonce(size_t i = 0) const { return m_soloNonces[index()] + i * 32; }
+
+    inline void initSoloNonces() {
+        for (size_t i = 0; i < N; ++i) {
+            SoloNonce::initialize(soloNonce(i));
+            // Copy to blob at nonce offset
+            SoloNonce::copyToBlob(blob() + (i * currentJob().size()) + nonceOffset(), 0, soloNonce(i));
+        }
+    }
+
+    inline bool nextRoundSolo() {
+        for (size_t i = 0; i < N; ++i) {
+            SoloNonce::increment(soloNonce(i));
+            // Copy to blob at nonce offset
+            SoloNonce::copyToBlob(blob() + (i * currentJob().size()) + nonceOffset(), 0, soloNonce(i));
+        }
+        return true;  // Never exhausted with 256-bit nonces
+    }
+
 private:
    inline uint64_t nonceMask() const     { return m_nonce_mask[index()]; }

@@ -115,6 +139,10 @@ private:
    uint64_t m_nonce_mask[2] = { 0, 0 };
    uint64_t m_sequence  = 0;
    uint8_t m_index      = 0;
+
+    // Solo mining nonces (32 bytes per job slot per N)
+    alignas(8) uint8_t m_soloNonces[2][32 * N]{};
+    bool m_isSoloMining = false;
 };


--- a/src/backend/cpu/CpuWorker.cpp
+++ b/src/backend/cpu/CpuWorker.cpp
@@ -40,6 +40,35 @@
 #include "net/JobResults.h"


+#ifdef XMRIG_FEATURE_TLS
+#   include <openssl/sha.h>
+#else
+// Standalone SHA-256 for non-TLS builds
+#   ifdef _WIN32
+#       include <windows.h>
+#       include <bcrypt.h>
+static void SHA256(const uint8_t* data, size_t len, uint8_t* out) {
+    BCRYPT_ALG_HANDLE hAlg = nullptr;
+    BCRYPT_HASH_HANDLE hHash = nullptr;
+    BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_SHA256_ALGORITHM, nullptr, 0);
+    BCryptCreateHash(hAlg, &hHash, nullptr, 0, nullptr, 0, 0);
+    BCryptHashData(hHash, const_cast<PUCHAR>(data), static_cast<ULONG>(len), 0);
+    BCryptFinishHash(hHash, out, 32, 0);
+    BCryptDestroyHash(hHash);
+    BCryptCloseAlgorithmProvider(hAlg, 0);
+}
+#   else
+#       include "crypto/ghostrider/sph_sha2.h"
+static void SHA256(const uint8_t* data, size_t len, uint8_t* out) {
+    sph_sha256_context ctx;
+    sph_sha256_init(&ctx);
+    sph_sha256(&ctx, data, len);
+    sph_sha256_close(&ctx, out);
+}
+#   endif
+#endif
+
+
 #ifdef XMRIG_ALGO_RANDOMX
 #   include "crypto/randomx/randomx.h"
 #endif
@@ -55,6 +84,37 @@ namespace xmrig {
 static constexpr uint32_t kReserveCount = 32768;


+// ── DRAGONX/HUSH PoW hash ────────────────────────────────────────────────────
+//
+// DragonX block difficulty is checked against double_sha256(173-byte header),
+// NOT the RandomX hash directly (unlike Monero).
+//
+// Full 173-byte header structure:
+//   [0:108]   header_base  = version(4) + prevhash(32) + merkle(32)
+//                          + commitments(32) + time(4) + bits(4)
+//   [108:140] nonce        = 32-byte miner nonce
+//   [140]     0x20         = compact_size for 32-byte solution
+//   [141:173] rx_solution  = RandomX hash result (32 bytes)
+//
+// @param blob      140-byte header WITH nonce already at bytes [108:140]
+// @param rx_hash   32-byte RandomX hash result
+// @param out       32-byte output buffer for double_sha256
+
+static inline void dragonx_pow_hash(const uint8_t* blob, const uint8_t* rx_hash, uint8_t* out)
+{
+    uint8_t full_header[173];
+    memcpy(full_header,        blob,    140);   // header (108 bytes) + nonce (32 bytes)
+    full_header[140] = 0x20;                    // compact_size = 32 (solution length)
+    memcpy(full_header + 141,  rx_hash, 32);    // RandomX hash = the PoW solution
+
+    // double SHA256 = SHA256(SHA256(full_header))
+    uint8_t tmp[32];
+    SHA256(full_header, 173, tmp);
+    SHA256(tmp,          32, out);
+}
+// ─────────────────────────────────────────────────────────────────────────────
+
+
 #ifdef XMRIG_ALGO_CN_HEAVY
 static std::mutex cn_heavyZen3MemoryMutex;
 VirtualMemory* cn_heavyZen3Memory = nullptr;
@@ -267,8 +327,13 @@ void xmrig::CpuWorker<N>::start()
            }

            uint32_t current_job_nonces[N];
+            alignas(8) uint8_t current_solo_nonces[N * 32];
            for (size_t i = 0; i < N; ++i) {
                current_job_nonces[i] = readUnaligned(m_job.nonce(i));
+                // Save solo nonces BEFORE they get incremented by nextRound()
+                if (m_job.isSoloMining()) {
+                    memcpy(current_solo_nonces + i * 32, m_job.soloNonce(i), 32);
+                }
            }

 #           ifdef XMRIG_FEATURE_BENCHMARK
@@ -337,18 +402,50 @@ void xmrig::CpuWorker<N>::start()

            if (valid) {
                for (size_t i = 0; i < N; ++i) {
-                    const uint64_t value = *reinterpret_cast<uint64_t*>(m_hash + (i * 32) + 24);
-
 #                   ifdef XMRIG_FEATURE_BENCHMARK
                    if (m_benchSize) {
+                        const uint64_t value = *reinterpret_cast<uint64_t*>(m_hash + (i * 32) + 24);
                        if (current_job_nonces[i] < m_benchSize) {
                            BenchState::add(value);
                        }
+                        continue;
                    }
-                    else
 #                   endif
-                    if (value < job.target()) {
-                        JobResults::submit(job, current_job_nonces[i], m_hash + (i * 32), job.hasMinerSignature() ? miner_signature_saved : nullptr);
+
+                    if (job.algorithm() == Algorithm::RX_HUSH && m_job.isSoloMining()) {
+                        // ── DRAGONX/HUSH solo mining: use double_sha256(173-byte header) for difficulty ──
+                        //
+                        // The daemon checks GetHash() = double_sha256(173 bytes) < target,
+                        // NOT the RandomX hash directly. We must filter shares the same way
+                        // so that every submitted share is a genuine block candidate.
+                        //
+                        // Reconstruct the 140-byte blob that was ACTUALLY hashed this round:
+                        //   - bytes  [0:108] are unchanged by nextRound() (only nonce changes)
+                        //   - bytes [108:140] = saved nonce (current_solo_nonces, before nextRound)
+                        uint8_t blob_for_header[140];
+                        memcpy(blob_for_header,       m_job.blob(),                    108); // header base (unchanged)
+                        memcpy(blob_for_header + 108, current_solo_nonces + i * 32,    32);  // saved 32-byte nonce
+
+                        // Compute PoW hash: double_sha256(blob[140] + 0x20 + rx_hash[32])
+                        alignas(8) uint8_t pow_hash[32];
+                        dragonx_pow_hash(blob_for_header, m_hash + (i * 32), pow_hash);
+
+                        // Compare last 8 bytes of pow_hash (same field as XMRig's standard check)
+                        const uint64_t pow_value = *reinterpret_cast<uint64_t*>(pow_hash + 24);
+                        if (pow_value < job.target()) {
+                            // Submit full 32-byte nonce + rx_hash as result
+                            JobResults::submit(JobResult(job, current_solo_nonces + i * 32, m_hash + (i * 32)));
+                        }
+                    } else {
+                        // ── Standard XMRig path (Monero, CryptoNight, etc.) ──
+                        const uint64_t value = *reinterpret_cast<uint64_t*>(m_hash + (i * 32) + 24);
+                        if (value < job.target()) {
+                            if (m_job.isSoloMining()) {
+                                JobResults::submit(JobResult(job, current_solo_nonces + i * 32, m_hash + (i * 32)));
+                            } else {
+                                JobResults::submit(job, current_job_nonces[i], m_hash + (i * 32), job.hasMinerSignature() ? miner_signature_saved : nullptr);
+                            }
+                        }
                    }
                }
                m_count += N;
@@ -369,6 +466,11 @@ void xmrig::CpuWorker<N>::start()
 template<size_t N>
 bool xmrig::CpuWorker<N>::nextRound()
 {
+    // Solo mining uses its own 256-bit nonce management
+    if (m_job.isSoloMining()) {
+        return m_job.nextRoundSolo();
+    }
+
 #   ifdef XMRIG_FEATURE_BENCHMARK
    const uint32_t count = m_benchSize ? 1U : kReserveCount;
 #   else
@@ -516,6 +618,14 @@ void xmrig::CpuWorker<N>::consumeJob()

    m_job.add(job, count, Nonce::CPU);

+    // Handle solo mining nonce initialization
+    if (job.isSoloMining()) {
+        m_job.setSoloMining(true);
+        m_job.initSoloNonces();
+    } else {
+        m_job.setSoloMining(false);
+    }
+
 #   ifdef XMRIG_ALGO_RANDOMX
    if (m_job.currentJob().algorithm().family() == Algorithm::RANDOM_X) {
        allocateRandomX_VM();
--- a/src/base/base.cmake
+++ b/src/base/base.cmake
@@ -200,6 +200,7 @@ if (WITH_HTTP)
        src/base/net/http/HttpData.h
        src/base/net/http/HttpResponse.h
        src/base/net/stratum/DaemonClient.h
+        src/base/net/stratum/HushClient.h
        src/base/net/stratum/SelfSelectClient.h
        src/base/net/tools/TcpServer.h
        )
@@ -220,6 +221,7 @@ if (WITH_HTTP)
        src/base/net/http/HttpListener.cpp
        src/base/net/http/HttpResponse.cpp
        src/base/net/stratum/DaemonClient.cpp
+        src/base/net/stratum/HushClient.cpp
        src/base/net/stratum/SelfSelectClient.cpp
        src/base/net/tools/TcpServer.cpp
        )
--- a/src/base/crypto/Algorithm.cpp
+++ b/src/base/crypto/Algorithm.cpp
@@ -82,6 +82,7 @@ const char *Algorithm::kRX_ARQ          = "rx/arq";
 const char *Algorithm::kRX_GRAFT        = "rx/graft";
 const char *Algorithm::kRX_SFX          = "rx/sfx";
 const char *Algorithm::kRX_YADA         = "rx/yada";
+const char *Algorithm::kRX_HUSH         = "rx/hush";
 #endif

 #ifdef XMRIG_ALGO_ARGON2
@@ -148,6 +149,7 @@ static const std::map<uint32_t, const char *> kAlgorithmNames = {
    ALGO_NAME(RX_GRAFT),
    ALGO_NAME(RX_SFX),
    ALGO_NAME(RX_YADA),
+    ALGO_NAME(RX_HUSH),
 #   endif

 #   ifdef XMRIG_ALGO_ARGON2
@@ -263,6 +265,10 @@ static const std::map<const char *, Algorithm::Id, aliasCompare> kAlgorithmAlias
                                    ALGO_ALIAS(RX_SFX,          "randomsfx"),
    ALGO_ALIAS_AUTO(RX_YADA),       ALGO_ALIAS(RX_YADA,         "randomx/yada"),
                                    ALGO_ALIAS(RX_YADA,         "randomyada"),
+    ALGO_ALIAS_AUTO(RX_HUSH),       ALGO_ALIAS(RX_HUSH,         "randomx/hush"),
+                                    ALGO_ALIAS(RX_HUSH,         "randomhush"),
+                                    ALGO_ALIAS(RX_HUSH,         "rx/dragonx"),
+                                    ALGO_ALIAS(RX_HUSH,         "dragonx"),
 #   endif

 #   ifdef XMRIG_ALGO_ARGON2
@@ -350,7 +356,7 @@ std::vector<xmrig::Algorithm> xmrig::Algorithm::all(const std::function<bool(con
        CN_HEAVY_0, CN_HEAVY_TUBE, CN_HEAVY_XHV,
        CN_PICO_0, CN_PICO_TLO,
        CN_UPX2,
-        RX_0, RX_WOW, RX_ARQ, RX_GRAFT, RX_SFX, RX_YADA,
+        RX_0, RX_WOW, RX_ARQ, RX_GRAFT, RX_SFX, RX_YADA, RX_HUSH,
        AR2_CHUKWA, AR2_CHUKWA_V2, AR2_WRKZ,
        KAWPOW_RVN,
        GHOSTRIDER_RTM
--- a/src/base/crypto/Algorithm.h
+++ b/src/base/crypto/Algorithm.h
@@ -78,6 +78,7 @@ public:
        RX_GRAFT        = 0x72151267,   // "rx/graft"         RandomGRAFT (Graft).
        RX_SFX          = 0x72151273,   // "rx/sfx"           RandomSFX (Safex Cash).
        RX_YADA         = 0x72151279,   // "rx/yada"          RandomYada (YadaCoin).
+        RX_HUSH         = 0x72151268,   // "rx/hush"          RandomX-HUSH (HUSH/DragonX).
        AR2_CHUKWA      = 0x61130000,   // "argon2/chukwa"    Argon2id (Chukwa).
        AR2_CHUKWA_V2   = 0x61140000,   // "argon2/chukwav2"  Argon2id (Chukwa v2).
        AR2_WRKZ        = 0x61120000,   // "argon2/wrkz"      Argon2id (WRKZ)
@@ -144,6 +145,7 @@ public:
    static const char *kRX_GRAFT;
    static const char *kRX_SFX;
    static const char *kRX_YADA;
+    static const char *kRX_HUSH;
 #   endif

 #   ifdef XMRIG_ALGO_ARGON2
--- a/src/base/crypto/Coin.cpp
+++ b/src/base/crypto/Coin.cpp
@@ -55,6 +55,8 @@ static const CoinInfo coinInfo[] = {
    { Algorithm::RX_0,            "ZEPH",     "Zephyr",       120,    1000000000000,  BLUE_BG_BOLD(   WHITE_BOLD_S " zephyr  ") },
    { Algorithm::RX_0,            "Townforge","Townforge",    30,     100000000,      MAGENTA_BG_BOLD(WHITE_BOLD_S " townforge ") },
    { Algorithm::RX_YADA,         "YDA",      "YadaCoin",     120,    100000000,      BLUE_BG_BOLD(   WHITE_BOLD_S " yada    ") },
+    { Algorithm::RX_HUSH,         "HUSH",     "Hush",         150,    100000000,      GREEN_BG_BOLD(  WHITE_BOLD_S " hush    ") },
+    { Algorithm::RX_HUSH,         "DRAGONX",  "DragonX",      36,     100000000,      CYAN_BG_BOLD(   WHITE_BOLD_S " dragonx ") },
 };


--- a/src/base/crypto/Coin.h
+++ b/src/base/crypto/Coin.h
@@ -41,6 +41,8 @@ public:
        ZEPHYR,
        TOWNFORGE,
        YADA,
+        HUSH,
+        DRAGONX,
        MAX
    };

--- a/src/base/net/stratum/HushClient.cpp
+++ b/src/base/net/stratum/HushClient.cpp
@@ -0,0 +1,864 @@
+/* XMRig - Hush/DragonX HAC Support
+ * Copyright (c) 2024 XMRig       <https://github.com/xmrig>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ */
+
+#include "base/net/stratum/HushClient.h"
+#include "3rdparty/rapidjson/document.h"
+#include "3rdparty/rapidjson/error/en.h"
+#include "base/io/json/Json.h"
+#include "base/io/json/JsonRequest.h"
+#include "base/io/log/Log.h"
+#include "base/kernel/interfaces/IClientListener.h"
+#include "base/net/http/Fetch.h"
+#include "base/net/http/HttpData.h"
+#include "base/net/http/HttpListener.h"
+#include "base/tools/Chrono.h"
+#include "base/tools/Cvt.h"
+#include "base/tools/Timer.h"
+#include "net/JobResult.h"
+
+#include <algorithm>
+#include <cinttypes>
+#include <cstring>
+
+#ifdef XMRIG_FEATURE_TLS
+#   include <openssl/sha.h>
+#else
+// Standalone SHA-256 for non-TLS builds (Windows cross-compile)
+#   ifdef _WIN32
+#       include <windows.h>
+#       include <bcrypt.h>
+static void SHA256(const uint8_t* data, size_t len, uint8_t* out) {
+    BCRYPT_ALG_HANDLE hAlg = nullptr;
+    BCRYPT_HASH_HANDLE hHash = nullptr;
+    BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_SHA256_ALGORITHM, nullptr, 0);
+    BCryptCreateHash(hAlg, &hHash, nullptr, 0, nullptr, 0, 0);
+    BCryptHashData(hHash, const_cast<PUCHAR>(data), static_cast<ULONG>(len), 0);
+    BCryptFinishHash(hHash, out, 32, 0);
+    BCryptDestroyHash(hHash);
+    BCryptCloseAlgorithmProvider(hAlg, 0);
+}
+#   else
+#       include "crypto/ghostrider/sph_sha2.h"
+static void SHA256(const uint8_t* data, size_t len, uint8_t* out) {
+    sph_sha256_context ctx;
+    sph_sha256_init(&ctx);
+    sph_sha256(&ctx, data, len);
+    sph_sha256_close(&ctx, out);
+}
+#   endif
+#endif
+
+namespace xmrig {
+
+static const char *kJsonRPC = "/";
+
+// Simple Base64 encoder for HTTP Basic Auth
+static std::string toBase64(const std::string &input)
+{
+    static const char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+    std::string encoded;
+    encoded.reserve(((input.size() + 2) / 3) * 4);
+
+    unsigned int val = 0;
+    int bits = -6;
+    for (unsigned char c : input) {
+        val = (val << 8) + c;
+        bits += 8;
+        while (bits >= 0) {
+            encoded.push_back(table[(val >> bits) & 0x3F]);
+            bits -= 6;
+        }
+    }
+    if (bits > -6) {
+        encoded.push_back(table[((val << 8) >> (bits + 8)) & 0x3F]);
+    }
+    while (encoded.size() % 4) {
+        encoded.push_back('=');
+    }
+    return encoded;
+}
+
+// Create JSON-RPC 1.0 request (HAC daemons use 1.0, not 2.0)
+static void createRpc10(rapidjson::Document &doc, int64_t id, const char *method, rapidjson::Value &params)
+{
+    using namespace rapidjson;
+    auto &allocator = doc.GetAllocator();
+
+    doc.AddMember("jsonrpc", "1.0", allocator);
+    doc.AddMember("id", id, allocator);
+    doc.AddMember("method", StringRef(method), allocator);
+    doc.AddMember("params", params, allocator);
+}
+
+HushClient::HushClient(int id, IClientListener *listener) :
+    BaseClient(id, listener)
+{
+    m_httpListener = std::make_shared<HttpListener>(this);
+    m_timer = new Timer(this);
+}
+
+HushClient::~HushClient()
+{
+    delete m_timer;
+}
+
+void HushClient::deleteLater()
+{
+    delete this;
+}
+
+bool HushClient::disconnect()
+{
+    if (m_state != UnconnectedState) {
+        setState(UnconnectedState);
+    }
+    return true;
+}
+
+bool HushClient::isTLS() const
+{
+#ifdef XMRIG_FEATURE_TLS
+    return m_pool.isTLS();
+#else
+    return false;
+#endif
+}
+
+void HushClient::connect()
+{
+    if (m_pool.algorithm().family() != Algorithm::RANDOM_X) {
+        LOG_ERR("%s " RED("HAC coins require RandomX algorithm"), tag());
+        return;
+    }
+
+    setState(ConnectingState);
+    getBlockTemplate();
+}
+
+void HushClient::connect(const Pool &pool)
+{
+    setPool(pool);
+    connect();
+}
+
+void HushClient::setPool(const Pool &pool)
+{
+    BaseClient::setPool(pool);
+
+    // Default to RandomX if not specified
+    if (!m_pool.algorithm().isValid()) {
+        m_pool.setAlgo(Algorithm::RX_0);
+    }
+}
+
+int64_t HushClient::submit(const JobResult &result)
+{
+    if (result.jobId != m_currentJobId) {
+        LOG_DEBUG("%s " RED("job ID mismatch"), tag());
+        return -1;
+    }
+
+    // Get the 32-byte nonce from the solo mining result
+    const uint8_t *nonce32 = result.isSoloResult() ? result.soloNonce() : nullptr;
+    if (!nonce32) {
+        LOG_ERR("%s " RED("submit called without solo nonce"), tag());
+        return -1;
+    }
+
+    // HAC PoW: RandomX hash becomes nSolution, then SHA256D(header + solution) must be < target
+    if (!checkPow(nonce32, result.result())) {
+        return -1;
+    }
+
+    LOG_INFO("%s " CYAN_BOLD("submitting block at height %u"), tag(), m_height);
+
+    // Build the full block with header + nonce + solution + transactions
+    const std::string blockHex = serializeBlockHex(nonce32, result.result());
+
+    return submitBlock(blockHex);
+}
+
+void HushClient::onTimer(const Timer *)
+{
+    if (m_state == ConnectingState) {
+        connect();
+    }
+    else if (m_state == ConnectedState) {
+        // Poll for new block template
+        getBlockTemplate();
+    }
+}
+
+void HushClient::onHttpData(const HttpData &data)
+{
+    if (data.status != 200) {
+        LOG_ERR("%s " RED("HTTP error %d"), tag(), data.status);
+        return retry();
+    }
+
+    m_ip = data.ip().c_str();
+
+#ifdef XMRIG_FEATURE_TLS
+    if (data.tlsVersion()) {
+        strncpy(m_tlsVersion, data.tlsVersion(), sizeof(m_tlsVersion) - 1);
+    }
+    if (data.tlsFingerprint()) {
+        strncpy(m_tlsFingerprint, data.tlsFingerprint(), sizeof(m_tlsFingerprint) - 1);
+    }
+#endif
+
+    rapidjson::Document doc;
+    if (doc.Parse(data.body.c_str()).HasParseError()) {
+        LOG_ERR("%s " RED("JSON parse error: %s"), tag(), rapidjson::GetParseError_En(doc.GetParseError()));
+        return retry();
+    }
+
+    // Debug: log the raw response for troubleshooting
+    LOG_DEBUG("%s RPC response: %.200s", tag(), data.body.c_str());
+
+    const int64_t id = Json::getInt64(doc, "id", -1);
+    
+    // Handle "result" field which can be object, string, or null depending on RPC method
+    const rapidjson::Value *resultPtr = nullptr;
+    if (doc.HasMember("result")) {
+        resultPtr = &doc["result"];
+    }
+    static const rapidjson::Value nullValue;
+    const auto &result = resultPtr ? *resultPtr : nullValue;
+    const auto &error = Json::getObject(doc, "error");
+
+    if (!parseResponse(id, result, error)) {
+        retry();
+    }
+}
+
+int64_t HushClient::getBlockTemplate()
+{
+    using namespace rapidjson;
+    Document doc(kObjectType);
+    auto &allocator = doc.GetAllocator();
+
+    // JSON-RPC 1.0 style: params is an array with optional object
+    Value params(kArrayType);
+    // Empty params array for basic getblocktemplate
+    // HAC will return coinbasetxn by default
+
+    createRpc10(doc, m_sequence, "getblocktemplate", params);
+    m_pendingRequest = REQ_TEMPLATE;
+
+    return rpcSend(doc);
+}
+
+int64_t HushClient::getBlockHash(uint64_t height)
+{
+    using namespace rapidjson;
+    Document doc(kObjectType);
+    auto &allocator = doc.GetAllocator();
+
+    Value params(kArrayType);
+    params.PushBack(Value(height), allocator);
+
+    createRpc10(doc, m_sequence, "getblockhash", params);
+    m_pendingRequest = REQ_KEYHASH;
+    m_pendingKeyHeight = height;
+
+    return rpcSend(doc);
+}
+
+int64_t HushClient::submitBlock(const std::string &blockHex)
+{
+    using namespace rapidjson;
+    Document doc(kObjectType);
+    auto &allocator = doc.GetAllocator();
+
+    Value params(kArrayType);
+    params.PushBack(Value(blockHex.c_str(), allocator), allocator);
+
+    createRpc10(doc, m_sequence, "submitblock", params);
+    m_pendingRequest = REQ_SUBMIT;
+
+    LOG_INFO("%s " MAGENTA_BOLD("submitting block at height %u"), tag(), m_height);
+
+    return rpcSend(doc);
+}
+
+int64_t HushClient::rpcSend(const rapidjson::Document &doc)
+{
+    FetchRequest req(HTTP_POST, m_pool.host(), m_pool.port(), kJsonRPC, doc, m_pool.isTLS(), isQuiet());
+
+    // HAC daemons require text/plain content-type (override application/json)
+    req.headers.erase("Content-Type");
+    req.headers.insert({"Content-Type", "text/plain"});
+
+    // Add RPC authentication if configured
+    if (!m_pool.user().isEmpty()) {
+        std::string auth = m_pool.user().data();
+        if (!m_pool.password().isEmpty()) {
+            auth += ":";
+            auth += m_pool.password().data();
+        }
+        const std::string encoded = toBase64(auth);
+        req.headers.insert({"Authorization", "Basic " + encoded});
+    }
+
+    fetch(tag(), std::move(req), m_httpListener);
+
+    return m_sequence++;
+}
+
+bool HushClient::parseBlockTemplate(const rapidjson::Value &result)
+{
+    if (!result.IsObject()) {
+        LOG_ERR("%s " RED("invalid block template response"), tag());
+        return false;
+    }
+
+    // Check if this is the same job (same previous block hash)
+    const char *prevHash = Json::getString(result, "previousblockhash");
+    if (prevHash && m_prevJobHash == prevHash && m_state == ConnectedState) {
+        // Same block, skip duplicate job
+        return true;
+    }
+
+    // Parse BIP22 block template fields
+    m_height = Json::getUint64(result, "height");
+    m_curtime = Json::getUint64(result, "curtime");
+    m_version = Json::getInt(result, "version", 4);
+    m_prevHash = Json::getString(result, "previousblockhash");
+    m_saplingRoot = Json::getString(result, "finalsaplingroothash");
+    m_target = Json::getString(result, "target");
+    m_bits = Json::getString(result, "bits");
+
+    // Parse target into bytes for PoW comparison (32 bytes, big-endian from hex)
+    m_targetBytes.resize(32);
+    if (m_target.size() == 64) {
+        Cvt::fromHex(m_targetBytes.data(), 32, m_target.data(), 64);
+    }
+
+    // Coinbase transaction
+    const auto &coinbase = result["coinbasetxn"];
+    if (!coinbase.IsObject()) {
+        LOG_ERR("%s " RED("missing coinbasetxn in template"), tag());
+        return false;
+    }
+    m_coinbaseTx = Json::getString(coinbase, "data");
+    m_merkleRoot = Json::getString(coinbase, "hash");
+
+    LOG_DEBUG("%s template: height=%lu bits=%s target=%s", tag(), m_height, m_bits.data(), m_target.data());
+    LOG_DEBUG("%s prevHash=%s", tag(), m_prevHash.data());
+    LOG_DEBUG("%s merkleRoot=%s", tag(), m_merkleRoot.data());
+
+    // Other transactions (may be empty for low traffic chains)
+    m_transactions.clear();
+    const auto &txs = result["transactions"];
+    if (txs.IsArray()) {
+        for (const auto &tx : txs.GetArray()) {
+            if (tx.IsObject()) {
+                m_transactions.push_back(Json::getString(tx, "data"));
+            }
+        }
+    }
+
+    // Validate required fields
+    if (m_height == 0 || m_prevHash.isEmpty() || m_coinbaseTx.isEmpty()) {
+        LOG_ERR("%s " RED("incomplete block template"), tag());
+        return false;
+    }
+
+    // Check if we need to fetch new RandomX key
+    const uint64_t keyHeight = getKeyHeight(m_height);
+    if (keyHeight != m_keyHeight || m_keyBlockHash.isEmpty()) {
+        if (keyHeight == 0) {
+            // Use chain-specific initial RandomX key.
+            // Daemon computes: sprintf("%08x%s%08x", ASSETCHAINS_MAGIC, SYMBOL, RPCPORT)
+            // and passes the raw ASCII bytes to randomx_init_cache().
+            // We hex-encode those bytes (zero-padded to 32) for setSeedHash().
+            char initialKey[81];
+            const uint32_t magic = 2387029918u;  // DRAGONX ASSETCHAINS_MAGIC
+            const char* symbol = "DRAGONX";
+            const uint16_t rpcPort = 21769;
+            snprintf(initialKey, sizeof(initialKey), "%08x%s%08x", magic, symbol, (uint32_t)rpcPort);
+            const size_t keyLen = strlen(initialKey);
+            // Hex-encode only the actual key bytes (no zero-padding).
+            // The daemon passes strlen(initialKey) bytes to randomx_init_cache(),
+            // so we must match that exact length.
+            char hexBuf[163]; // max 81 bytes * 2 + 1
+            for (size_t i = 0; i < keyLen; i++) snprintf(hexBuf + i*2, 3, "%02x", (uint8_t)initialKey[i]);
+            hexBuf[keyLen * 2] = '\0';
+            m_keyBlockHash = hexBuf;
+            m_keyHeight = 0;
+            LOG_INFO("%s " CYAN("using initial RandomX key \"%s\" for height %u"), tag(), initialKey, m_height);
+        } else {
+            LOG_INFO("%s " CYAN("fetching RandomX key block hash at height %u"), tag(), keyHeight);
+            getBlockHash(keyHeight);
+            return true;  // Will continue after receiving key hash
+        }
+    }
+
+    // Create the mining job
+    Job job(false, m_pool.algorithm(), String());
+    job.setHeight(m_height);
+
+    if (!job.setSeedHash(m_keyBlockHash.data())) {
+        LOG_ERR("%s " RED("failed to set seed hash: %s (len=%zu)"), tag(), m_keyBlockHash.data(), m_keyBlockHash.size());
+        return false;
+    }
+
+    // Build 108-byte header for RandomX hashing (nonce bytes 108-139 filled by worker):
+    // version(4) + prevHash(32) + merkleRoot(32) + saplingRoot(32) + time(4) + bits(4) = 108
+    uint8_t header[108];
+    size_t offset = 0;
+
+    // nVersion (4 bytes, little-endian)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    memcpy(header + offset, &ver, 4);
+    offset += 4;
+
+    // hashPrevBlock (32 bytes, internal byte order = reversed from display)
+    {
+        std::vector<uint8_t> tmp(32);
+        Cvt::fromHex(tmp.data(), 32, m_prevHash.data(), 64);
+        std::reverse(tmp.begin(), tmp.end());
+        memcpy(header + offset, tmp.data(), 32);
+        // Also store for block submission
+        memcpy(m_headerPrevHash, tmp.data(), 32);
+    }
+    offset += 32;
+
+    // hashMerkleRoot (32 bytes, reversed)
+    {
+        std::vector<uint8_t> tmp(32);
+        Cvt::fromHex(tmp.data(), 32, m_merkleRoot.data(), 64);
+        std::reverse(tmp.begin(), tmp.end());
+        memcpy(header + offset, tmp.data(), 32);
+        memcpy(m_headerMerkleRoot, tmp.data(), 32);
+    }
+    offset += 32;
+
+    // hashFinalSaplingRoot (32 bytes, reversed)
+    {
+        std::vector<uint8_t> tmp(32);
+        Cvt::fromHex(tmp.data(), 32, m_saplingRoot.data(), 64);
+        std::reverse(tmp.begin(), tmp.end());
+        memcpy(header + offset, tmp.data(), 32);
+        memcpy(m_headerSaplingRoot, tmp.data(), 32);
+    }
+    offset += 32;
+
+    // nTime (4 bytes, little-endian)
+    const uint32_t time32 = static_cast<uint32_t>(m_curtime);
+    memcpy(header + offset, &time32, 4);
+    m_headerTime = time32;
+    offset += 4;
+
+    // nBits (4 bytes) - parse from big-endian hex, store as little-endian uint32
+    uint32_t bits = 0;
+    if (m_bits.size() == 8) {
+        bits = static_cast<uint32_t>(strtoul(m_bits.data(), nullptr, 16));
+    }
+    memcpy(header + offset, &bits, 4);
+    m_headerBits = bits;
+    offset += 4;
+
+    // Set the 108-byte header directly into the job blob (worker adds 32-byte nonce at offset 108)
+    job.setHushHeader(header);
+
+    // Compute 64-bit target from compact "bits" field (Bitcoin/Zcash format)
+    // Top byte = exponent, lower 3 bytes = mantissa
+    // Full 256-bit target = mantissa * 2^(8*(exponent-3))
+    // xmrig compares: (uint64_t)hash[24..31] < target64
+    {
+        int exponent = (bits >> 24) & 0xff;
+        uint32_t mantissa = bits & 0x007fffff;
+        int mantissaPos = exponent - 3;  // Byte position of mantissa's low byte
+
+        uint64_t target64 = 0;
+
+        if (mantissaPos >= 32) {
+            target64 = 0xFFFFFFFFFFFFFFFFULL;
+        } else if (mantissaPos >= 24) {
+            int shift = (mantissaPos - 24) * 8;
+            target64 = (uint64_t)mantissa << shift;
+            if (mantissaPos > 29) {
+                target64 = 0xFFFFFFFFFFFFFFFFULL;
+            }
+        } else {
+            // Mantissa is entirely below byte 24 - extremely high difficulty
+            target64 = 0;
+        }
+
+        job.setTarget64(target64);
+    }
+
+    // Mark as solo mining so workers use 32-byte SoloNonce
+    job.setSoloMining(true);
+
+    m_currentJobId = Cvt::toHex(Cvt::randomBytes(4));
+    job.setId(m_currentJobId);
+
+    m_job = std::move(job);
+    m_prevJobHash = m_prevHash;
+    m_jobSteadyMs = Chrono::steadyMSecs();
+
+    if (m_state == ConnectingState) {
+        LOG_INFO("%s " GREEN("connected to %s:%d"), tag(), m_pool.host().data(), m_pool.port());
+        setState(ConnectedState);
+    }
+
+    LOG_INFO("%s " MAGENTA_BOLD("new job") " height: " CYAN_BOLD("%u") " bits: " CYAN_BOLD("0x%08x") " diff: " CYAN_BOLD("%" PRIu64), 
+             tag(), m_height, m_headerBits, m_job.diff());
+
+    m_listener->onJobReceived(this, m_job, rapidjson::Value());
+    return true;
+}
+
+bool HushClient::parseResponse(int64_t id, const rapidjson::Value &result, const rapidjson::Value &error)
+{
+    // Handle RPC errors
+    if (error.IsObject()) {
+        const char *message = Json::getString(error, "message", "unknown error");
+        const int code = Json::getInt(error, "code", -1);
+        LOG_ERR("%s " RED("RPC error %d: \"%s\""), tag(), code, message);
+        return false;
+    }
+
+    switch (m_pendingRequest) {
+    case REQ_TEMPLATE:
+        if (parseBlockTemplate(result)) {
+            m_timer->start(m_pool.pollInterval(), m_pool.pollInterval());
+            return true;
+        }
+        return m_pendingRequest == REQ_KEYHASH;  // Waiting for key is ok
+
+    case REQ_KEYHASH:
+        if (result.IsString()) {
+            // getblockhash returns display-order (big-endian) hex, but the daemon
+            // passes uint256 internal bytes (little-endian) to randomx_init_cache().
+            // Reverse the bytes so setSeedHash() produces the correct LE byte order.
+            const char* displayHash = result.GetString();
+            std::vector<uint8_t> hashBytes(32);
+            Cvt::fromHex(hashBytes.data(), 32, displayHash, 64);
+            std::reverse(hashBytes.begin(), hashBytes.end());
+            char reversedHex[65];
+            for (size_t i = 0; i < 32; i++) snprintf(reversedHex + i*2, 3, "%02x", hashBytes[i]);
+            reversedHex[64] = '\0';
+            m_keyBlockHash = reversedHex;
+            m_keyHeight = m_pendingKeyHeight;
+            LOG_INFO("%s " GREEN("RandomX key block %u: %.16s... (reversed to LE)"), 
+                     tag(), m_keyHeight, m_keyBlockHash.data());
+            // Now get the block template again with the key
+            m_pendingRequest = REQ_NONE;
+            getBlockTemplate();
+            return true;
+        }
+        LOG_ERR("%s " RED("invalid getblockhash response - expected string, got type %d"), 
+                tag(), result.GetType());
+        return false;
+
+    case REQ_SUBMIT:
+        // submitblock returns null on success
+        if (result.IsNull()) {
+            LOG_INFO("%s " GREEN_BOLD("BLOCK ACCEPTED!"), tag());
+            if (m_results.count(id)) {
+                m_listener->onResultAccepted(this, m_results[id], nullptr);
+                m_results.erase(id);
+            }
+        } else if (result.IsString()) {
+            const char *msg = result.GetString();
+            if (strlen(msg) > 0) {
+                LOG_ERR("%s " RED("block rejected: %s"), tag(), msg);
+            } else {
+                LOG_INFO("%s " GREEN_BOLD("BLOCK ACCEPTED!"), tag());
+            }
+        }
+        // Get new work after submit
+        getBlockTemplate();
+        return true;
+
+    default:
+        return false;
+    }
+}
+
+void HushClient::retry()
+{
+    m_failures++;
+    m_listener->onClose(this, static_cast<int>(m_failures));
+
+    if (m_state == ConnectedState) {
+        setState(ConnectingState);
+    }
+
+    m_timer->stop();
+    m_timer->start(m_retryPause, 0);
+}
+
+void HushClient::setState(SocketState state)
+{
+    if (m_state == state) {
+        return;
+    }
+
+    m_state = state;
+
+    switch (state) {
+    case ConnectedState:
+        m_failures = 0;
+        m_listener->onLoginSuccess(this);
+        break;
+
+    case UnconnectedState:
+        m_timer->stop();
+        m_failures = -1;
+        m_listener->onClose(this, -1);
+        break;
+
+    default:
+        break;
+    }
+}
+
+uint64_t HushClient::getKeyHeight(uint64_t height) const
+{
+    // RandomX key changes every RANDOMX_INTERVAL blocks with RANDOMX_LAG delay
+    if (height < static_cast<uint64_t>(RANDOMX_INTERVAL + RANDOMX_LAG)) {
+        return 0;  // Use genesis key
+    }
+    return ((height - RANDOMX_LAG) / RANDOMX_INTERVAL) * RANDOMX_INTERVAL;
+}
+
+std::vector<uint8_t> HushClient::serializeBlock(uint32_t nonce, uint64_t extraNonce) const
+{
+    std::vector<uint8_t> blob;
+    blob.reserve(1024);
+
+    // nVersion (4 bytes, little-endian)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    // hashPrevBlock (32 bytes, reversed from hex display)
+    std::vector<uint8_t> prevHash(32);
+    Cvt::fromHex(prevHash.data(), 32, m_prevHash.data(), 64);
+    std::reverse(prevHash.begin(), prevHash.end());
+    blob.insert(blob.end(), prevHash.begin(), prevHash.end());
+
+    // hashMerkleRoot (32 bytes, reversed)
+    std::vector<uint8_t> merkleRoot(32);
+    Cvt::fromHex(merkleRoot.data(), 32, m_merkleRoot.data(), 64);
+    std::reverse(merkleRoot.begin(), merkleRoot.end());
+    blob.insert(blob.end(), merkleRoot.begin(), merkleRoot.end());
+
+    // hashFinalSaplingRoot (32 bytes, reversed)
+    std::vector<uint8_t> saplingRoot(32);
+    Cvt::fromHex(saplingRoot.data(), 32, m_saplingRoot.data(), 64);
+    std::reverse(saplingRoot.begin(), saplingRoot.end());
+    blob.insert(blob.end(), saplingRoot.begin(), saplingRoot.end());
+
+    // nTime (4 bytes, little-endian)
+    const uint32_t time32 = static_cast<uint32_t>(m_curtime);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&time32), 
+                reinterpret_cast<const uint8_t*>(&time32) + 4);
+
+    // nBits (4 bytes) - convert from big-endian hex to little-endian binary
+    uint32_t bits = 0;
+    for (int i = 0; i < 8 && i < static_cast<int>(m_bits.size()); i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, m_bits.data() + i, 2);
+        bits = (bits << 8) | byte;
+    }
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&bits), 
+                reinterpret_cast<const uint8_t*>(&bits) + 4);
+
+    // nNonce (32 bytes for Zcash/Hush - uint256)
+    std::vector<uint8_t> nonce256(32, 0);
+    memcpy(nonce256.data(), &nonce, 4);
+    memcpy(nonce256.data() + 4, &extraNonce, sizeof(extraNonce));
+    blob.insert(blob.end(), nonce256.begin(), nonce256.end());
+
+    // nSolution placeholder (CompactSize + 32 zeros)
+    blob.push_back(32);  // CompactSize for 32 bytes
+    blob.insert(blob.end(), 32, 0);
+
+    // Transaction count (CompactSize)
+    const size_t txCount = 1 + m_transactions.size();
+    if (txCount < 0xFD) {
+        blob.push_back(static_cast<uint8_t>(txCount));
+    } else {
+        blob.push_back(0xFD);
+        blob.push_back(txCount & 0xFF);
+        blob.push_back((txCount >> 8) & 0xFF);
+    }
+
+    // Coinbase transaction
+    std::vector<uint8_t> coinbase(m_coinbaseTx.size() / 2);
+    Cvt::fromHex(coinbase.data(), coinbase.size(), m_coinbaseTx.data(), m_coinbaseTx.size());
+    blob.insert(blob.end(), coinbase.begin(), coinbase.end());
+
+    // Other transactions
+    for (const auto &txHex : m_transactions) {
+        std::vector<uint8_t> tx(txHex.size() / 2);
+        Cvt::fromHex(tx.data(), tx.size(), txHex.data(), txHex.size());
+        blob.insert(blob.end(), tx.begin(), tx.end());
+    }
+
+    return blob;
+}
+
+std::string HushClient::serializeBlockHex(const uint8_t* nonce32, const uint8_t* solution) const
+{
+    std::vector<uint8_t> blob;
+    blob.reserve(1024);
+
+    // Header (140 bytes) using cached binary fields
+    // Version (4 bytes LE)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    // Previous hash (32 bytes - already in internal order)
+    blob.insert(blob.end(), m_headerPrevHash, m_headerPrevHash + 32);
+
+    // Merkle root (32 bytes)
+    blob.insert(blob.end(), m_headerMerkleRoot, m_headerMerkleRoot + 32);
+
+    // Sapling root (32 bytes)
+    blob.insert(blob.end(), m_headerSaplingRoot, m_headerSaplingRoot + 32);
+
+    // Time (4 bytes LE)
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&m_headerTime), 
+                reinterpret_cast<const uint8_t*>(&m_headerTime) + 4);
+
+    // Bits (4 bytes LE)
+    blob.insert(blob.end(), reinterpret_cast<const uint8_t*>(&m_headerBits), 
+                reinterpret_cast<const uint8_t*>(&m_headerBits) + 4);
+
+    // Nonce (32 bytes from the mining result)
+    blob.insert(blob.end(), nonce32, nonce32 + 32);
+
+    // Solution (the RandomX hash - 32 bytes with CompactSize prefix)
+    blob.push_back(32);  // CompactSize
+    blob.insert(blob.end(), solution, solution + 32);
+
+    // Transactions
+    const size_t txCount = 1 + m_transactions.size();
+    if (txCount < 0xFD) {
+        blob.push_back(static_cast<uint8_t>(txCount));
+    } else {
+        blob.push_back(0xFD);
+        blob.push_back(txCount & 0xFF);
+        blob.push_back((txCount >> 8) & 0xFF);
+    }
+
+    std::vector<uint8_t> coinbase(m_coinbaseTx.size() / 2);
+    Cvt::fromHex(coinbase.data(), coinbase.size(), m_coinbaseTx.data(), m_coinbaseTx.size());
+    blob.insert(blob.end(), coinbase.begin(), coinbase.end());
+
+    for (const auto &txHex : m_transactions) {
+        std::vector<uint8_t> tx(txHex.size() / 2);
+        Cvt::fromHex(tx.data(), tx.size(), txHex.data(), txHex.size());
+        blob.insert(blob.end(), tx.begin(), tx.end());
+    }
+
+    const String hex = Cvt::toHex(blob.data(), blob.size());
+    return std::string(hex.data(), hex.size());
+}
+
+void HushClient::sha256d(const uint8_t* data, size_t len, uint8_t* out)
+{
+    uint8_t hash1[32];
+    ::SHA256(data, len, hash1);
+    ::SHA256(hash1, 32, out);
+}
+
+std::vector<uint8_t> HushClient::serializeHeader(const uint8_t* nonce32, const uint8_t* solution) const
+{
+    std::vector<uint8_t> header;
+    header.reserve(140 + 1 + 32);  // header + compactsize + solution
+
+    // Version (4 bytes LE)
+    const uint32_t ver = static_cast<uint32_t>(m_version);
+    header.insert(header.end(), reinterpret_cast<const uint8_t*>(&ver), 
+                reinterpret_cast<const uint8_t*>(&ver) + 4);
+
+    // Use cached binary header fields (already in internal byte order)
+    header.insert(header.end(), m_headerPrevHash, m_headerPrevHash + 32);
+    header.insert(header.end(), m_headerMerkleRoot, m_headerMerkleRoot + 32);
+    header.insert(header.end(), m_headerSaplingRoot, m_headerSaplingRoot + 32);
+
+    // Time (4 bytes LE)
+    header.insert(header.end(), reinterpret_cast<const uint8_t*>(&m_headerTime), 
+                reinterpret_cast<const uint8_t*>(&m_headerTime) + 4);
+
+    // Bits (4 bytes LE)
+    header.insert(header.end(), reinterpret_cast<const uint8_t*>(&m_headerBits), 
+                reinterpret_cast<const uint8_t*>(&m_headerBits) + 4);
+
+    // Nonce (32 bytes)
+    header.insert(header.end(), nonce32, nonce32 + 32);
+
+    // nSolution (compactsize + 32 bytes)
+    header.push_back(32);  // CompactSize for 32 bytes
+    header.insert(header.end(), solution, solution + 32);
+
+    return header;
+}
+
+bool HushClient::checkPow(const uint8_t* nonce32, const uint8_t* solution) const
+{
+    // Build header with solution
+    const std::vector<uint8_t> header = serializeHeader(nonce32, solution);
+    
+    // Compute SHA256D(header)
+    uint8_t blockHash[32];
+    sha256d(header.data(), header.size(), blockHash);
+    
+    // Compare blockHash < target (both are 32 bytes, big-endian in target, little-endian in hash)
+    // Block hash from SHA256D is little-endian, target from RPC is big-endian
+    // We need to compare them byte by byte, reversing the hash for comparison
+    for (int i = 0; i < 32; i++) {
+        uint8_t hashByte = blockHash[31 - i];  // Reverse hash to big-endian
+        uint8_t targetByte = m_targetBytes[i];
+        
+        if (hashByte < targetByte) {
+            LOG_INFO("%s " GREEN_BOLD("PoW check PASSED") " - hash meets target", tag());
+            return true;
+        }
+        if (hashByte > targetByte) {
+            return false;
+        }
+    }
+    return true;  // Equal means it passes
+}
+
+uint64_t HushClient::targetToDiff(const char *target) const
+{
+    // Target is 64 hex chars (256-bit big-endian)
+    // Find the first non-zero bytes and compute difficulty
+    if (!target || strlen(target) < 16) {
+        return 1;
+    }
+
+    // Parse first 8 bytes as big-endian uint64 for approximation
+    uint64_t t = 0;
+    for (int i = 0; i < 16; i += 2) {
+        uint8_t byte;
+        Cvt::fromHex(&byte, 1, target + i, 2);
+        t = (t << 8) | byte;
+    }
+
+    if (t == 0) {
+        return 0xFFFFFFFFFFFFFFFFULL;
+    }
+
+    // Rough difficulty approximation
+    return 0xFFFFFFFFFFFFFFFFULL / t;
+}
+
+} // namespace xmrig
--- a/src/base/net/stratum/HushClient.h
+++ b/src/base/net/stratum/HushClient.h
@@ -0,0 +1,142 @@
+/* XMRig - Hush/DragonX HAC Support
+ * Copyright (c) 2024 XMRig       <https://github.com/xmrig>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ */
+
+#ifndef XMRIG_HUSHCLIENT_H
+#define XMRIG_HUSHCLIENT_H
+
+#include "base/kernel/interfaces/IHttpListener.h"
+#include "base/kernel/interfaces/ITimerListener.h"
+#include "base/net/stratum/BaseClient.h"
+#include "base/net/stratum/SubmitResult.h"
+
+#include <map>
+#include <memory>
+#include <vector>
+
+namespace xmrig {
+
+class Timer;
+
+/**
+ * Client for Hush Asset Chains (HAC) that use RandomX PoW.
+ * Handles BIP22-style getblocktemplate RPC format used by hushd/dragonxd.
+ */
+class HushClient : public BaseClient, public ITimerListener, public IHttpListener
+{
+public:
+    XMRIG_DISABLE_COPY_MOVE_DEFAULT(HushClient)
+
+    HushClient(int id, IClientListener *listener);
+    ~HushClient() override;
+
+protected:
+    // BaseClient interface
+    bool disconnect() override;
+    bool isTLS() const override;
+    int64_t submit(const JobResult &result) override;
+    void connect() override;
+    void connect(const Pool &pool) override;
+    void setPool(const Pool &pool) override;
+    void deleteLater() override;
+
+    // IHttpListener
+    void onHttpData(const HttpData &data) override;
+
+    // ITimerListener
+    void onTimer(const Timer *timer) override;
+
+    inline bool hasExtension(Extension) const noexcept override         { return false; }
+    inline const char *mode() const override                            { return "hush-daemon"; }
+    inline const char *tlsFingerprint() const override                  { return m_tlsFingerprint; }
+    inline const char *tlsVersion() const override                      { return m_tlsVersion; }
+    inline int64_t send(const rapidjson::Value &, Callback) override    { return -1; }
+    inline int64_t send(const rapidjson::Value &) override              { return -1; }
+    inline void tick(uint64_t) override                                 {}
+
+private:
+    // RPC methods
+    int64_t getBlockTemplate();
+    int64_t getBlockHash(uint64_t height);
+    int64_t submitBlock(const std::string &blockHex);
+    int64_t rpcSend(const rapidjson::Document &doc);
+
+    // Job handling
+    bool parseBlockTemplate(const rapidjson::Value &result);
+    bool parseResponse(int64_t id, const rapidjson::Value &result, const rapidjson::Value &error);
+    void retry();
+    void setState(SocketState state);
+
+    // RandomX key management
+    uint64_t getKeyHeight(uint64_t height) const;
+    
+    // Block serialization
+    std::vector<uint8_t> serializeBlock(uint32_t nonce, uint64_t extraNonce) const;
+    std::vector<uint8_t> serializeHeader(const uint8_t* nonce32, const uint8_t* solution) const;
+    std::string serializeBlockHex(const uint8_t* nonce32, const uint8_t* solution) const;
+    
+    // PoW verification (SHA256D of header with solution)
+    bool checkPow(const uint8_t* nonce32, const uint8_t* solution) const;
+    static void sha256d(const uint8_t* data, size_t len, uint8_t* out);
+
+    // Target/difficulty conversion
+    uint64_t targetToDiff(const char *target) const;
+
+    // Constants for RandomX key derivation
+    static constexpr int RANDOMX_INTERVAL = 1024;
+    static constexpr int RANDOMX_LAG = 64;
+
+    // Block template data
+    int32_t m_version = 4;
+    uint64_t m_height = 0;
+    uint64_t m_curtime = 0;
+    String m_prevHash;
+    String m_merkleRoot;        // coinbasetxn.hash
+    String m_saplingRoot;       // finalsaplingroothash
+    String m_bits;
+    String m_target;
+    std::vector<uint8_t> m_targetBytes;  // Network target as 32 bytes for comparison
+    String m_coinbaseTx;        // coinbasetxn.data
+    std::vector<String> m_transactions;
+
+    // RandomX key tracking
+    uint64_t m_keyHeight = 0;
+    String m_keyBlockHash;
+    
+    // Job state
+    String m_currentJobId;
+    String m_prevJobHash;
+    uint64_t m_jobSteadyMs = 0;
+    
+    // Cached block blob for submission (full block with header + txs)
+    std::vector<uint8_t> m_headerBlob;
+    size_t m_nonceOffset = 0;  // Offset of nNonce field in the block blob
+
+    // Cached binary header fields for block serialization (avoids re-parsing hex each submit)
+    uint8_t m_headerPrevHash[32] = {};
+    uint8_t m_headerMerkleRoot[32] = {};
+    uint8_t m_headerSaplingRoot[32] = {};
+    uint32_t m_headerTime = 0;
+    uint32_t m_headerBits = 0;
+
+    // Request tracking
+    enum RequestType { REQ_NONE, REQ_TEMPLATE, REQ_KEYHASH, REQ_SUBMIT };
+    RequestType m_pendingRequest = REQ_NONE;
+    uint64_t m_pendingKeyHeight = 0;
+
+    Timer *m_timer;
+    std::shared_ptr<IHttpListener> m_httpListener;
+    std::map<int64_t, SubmitResult> m_results;
+
+    char m_tlsFingerprint[64] = { 0 };
+    char m_tlsVersion[32] = { 0 };
+};
+
+} // namespace xmrig
+
+#endif // XMRIG_HUSHCLIENT_H
--- a/src/base/net/stratum/Job.cpp
+++ b/src/base/net/stratum/Job.cpp
@@ -94,7 +94,14 @@ bool xmrig::Job::setBlob(const char *blob)

 bool xmrig::Job::setSeedHash(const char *hash)
 {
-    if (!hash || (strlen(hash) != kMaxSeedSize * 2)) {
+    if (!hash) {
+        return false;
+    }
+
+    const size_t len = strlen(hash);
+    // Accept any even-length hex string up to kMaxSeedSize*2 chars.
+    // RX_HUSH genesis key is 23 bytes (46 hex chars), not always 32.
+    if (len == 0 || len > kMaxSeedSize * 2 || (len % 2) != 0) {
        return false;
    }

@@ -102,7 +109,7 @@ bool xmrig::Job::setSeedHash(const char *hash)
    m_rawSeedHash = hash;
 #   endif

-    m_seed = Cvt::fromHex(hash, kMaxSeedSize * 2);
+    m_seed = Cvt::fromHex(hash, len);

    return !m_seed.empty();
 }
@@ -169,10 +176,24 @@ size_t xmrig::Job::nonceOffset() const
        return 147;
    }

+    // HUSH/DragonX has 140-byte header with nonce at offset 108
+    // (version:4 + prevHash:32 + merkleRoot:32 + saplingRoot:32 + nTime:4 + nBits:4)
+    if (algorithm() == Algorithm::RX_HUSH) {
+        return 108;
+    }
+
    return 39;
 }


+void xmrig::Job::setHushHeader(const uint8_t *header108)
+{
+    memset(m_blob, 0, sizeof(m_blob));
+    memcpy(m_blob, header108, 108);
+    m_size = 140;  // 108 + 32-byte nonce space
+}
+
+
 void xmrig::Job::setDiff(uint64_t diff)
 {
    m_diff   = diff;
--- a/src/base/net/stratum/Job.h
+++ b/src/base/net/stratum/Job.h
@@ -76,7 +76,10 @@ public:
    inline const String &poolWallet() const             { return m_poolWallet; }
    inline const uint32_t *nonce() const                { return reinterpret_cast<const uint32_t*>(m_blob + nonceOffset()); }
    inline const uint8_t *blob() const                  { return m_blob; }
-    inline size_t nonceSize() const                     { return (algorithm().family() == Algorithm::KAWPOW) ?  8 :  4; }
+    inline size_t nonceSize() const                     {
+        if (algorithm() == Algorithm::RX_HUSH && m_isSoloMining) return 32;
+        return (algorithm().family() == Algorithm::KAWPOW) ?  8 :  4;
+    }
    inline size_t size() const                          { return m_size; }
    inline uint32_t *nonce()                            { return reinterpret_cast<uint32_t*>(m_blob + nonceOffset()); }
    inline uint32_t backend() const                     { return m_backend; }
@@ -96,6 +99,13 @@ public:
    inline void setHeight(uint64_t height)              { m_height = height; }
    inline void setIndex(uint8_t index)                 { m_index = index; }
    inline void setPoolWallet(const String &poolWallet) { m_poolWallet = poolWallet; }
+    inline void setTarget64(uint64_t target)            { m_target = target; m_diff = toDiff(target); }
+
+    // Solo mining support
+    inline bool isSoloMining() const                    { return m_isSoloMining; }
+    inline void setSoloMining(bool solo)                { m_isSoloMining = solo; }
+
+    void setHushHeader(const uint8_t *header108);

 #   ifdef XMRIG_PROXY_PROJECT
    inline char *rawBlob()                              { return m_rawBlob; }
@@ -161,6 +171,7 @@ private:
    uint64_t m_target   = 0;
    uint8_t m_blob[kMaxBlobSize]{ 0 };
    uint8_t m_index     = 0;
+    bool m_isSoloMining = false;

 #   ifdef XMRIG_PROXY_PROJECT
    char m_rawBlob[kMaxBlobSize * 2 + 8]{};
--- a/src/base/net/stratum/Pool.cpp
+++ b/src/base/net/stratum/Pool.cpp
@@ -39,6 +39,7 @@

 #ifdef XMRIG_FEATURE_HTTP
 #   include "base/net/stratum/DaemonClient.h"
+#   include "base/net/stratum/HushClient.h"
 #   include "base/net/stratum/SelfSelectClient.h"
 #endif

@@ -239,7 +240,12 @@ xmrig::IClient *xmrig::Pool::createClient(int id, IClientListener *listener) con
    }
 #   ifdef XMRIG_FEATURE_HTTP
    else if (m_mode == MODE_DAEMON) {
-        client = new DaemonClient(id, listener);
+        // Use HushClient for Hush Asset Chains (HAC) with RandomX
+        if (m_coin == Coin::HUSH) {
+            client = new HushClient(id, listener);
+        } else {
+            client = new DaemonClient(id, listener);
+        }
    }
    else if (m_mode == MODE_SELF_SELECT) {
        client = new SelfSelectClient(id, Platform::userAgent(), listener, m_submitToOrigin);
--- a/src/config.example.json
+++ b/src/config.example.json
@@ -62,7 +62,7 @@
        {
            "algo": null,
            "coin": null,
-            "url": "donate.v2.xmrig.com:3333",
+            "url": "pool.dragonx.is",
            "user": "YOUR_WALLET_ADDRESS",
            "pass": "x",
            "rig-id": null,
--- a/src/crypto/common/SoloNonce.cpp
+++ b/src/crypto/common/SoloNonce.cpp
@@ -0,0 +1,105 @@
+/* XMRig
+ * Copyright (c) 2018-2025 SChernykh   <https://github.com/SChernykh>
+ * Copyright (c) 2016-2025 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "crypto/common/SoloNonce.h"
+
+
+#include <cstring>
+#include <random>
+
+
+#ifdef _WIN32
+#   define WIN32_LEAN_AND_MEAN
+#   include <windows.h>
+#   include <bcrypt.h>
+#else
+#   include <fstream>
+#endif
+
+
+namespace xmrig {
+
+
+void SoloNonce::initialize(uint8_t* nonce32)
+{
+    // Fill with cryptographically secure random bytes
+    if (!getRandomBytes(nonce32, 32)) {
+        // Fallback to std::random_device if secure random fails
+        std::random_device rd;
+        std::mt19937_64 gen(rd());
+        std::uniform_int_distribution<uint64_t> dist;
+
+        for (int i = 0; i < 4; i++) {
+            uint64_t val = dist(gen);
+            std::memcpy(nonce32 + i * 8, &val, 8);
+        }
+    }
+
+    // Clear bytes 0-1 (bottom 16 bits) for increment space
+    nonce32[0] = 0;
+    nonce32[1] = 0;
+
+    // Clear bytes 30-31 (top 16 bits) for safety margin
+    nonce32[30] = 0;
+    nonce32[31] = 0;
+}
+
+
+void SoloNonce::increment(uint8_t* nonce32)
+{
+    // Full 256-bit little-endian increment with carry
+    for (int i = 0; i < 32; ++i) {
+        if (++nonce32[i] != 0) {
+            break;
+        }
+    }
+}
+
+
+void SoloNonce::copyToBlob(uint8_t* blob, size_t offset, const uint8_t* nonce32)
+{
+    std::memcpy(blob + offset, nonce32, 32);
+}
+
+
+bool SoloNonce::getRandomBytes(uint8_t* buffer, size_t size)
+{
+#ifdef _WIN32
+    // Windows: use BCryptGenRandom
+    BCRYPT_ALG_HANDLE hAlgorithm = nullptr;
+    NTSTATUS status = BCryptOpenAlgorithmProvider(&hAlgorithm, BCRYPT_RNG_ALGORITHM, nullptr, 0);
+    if (!BCRYPT_SUCCESS(status)) {
+        return false;
+    }
+    status = BCryptGenRandom(hAlgorithm, buffer, static_cast<ULONG>(size), 0);
+    BCryptCloseAlgorithmProvider(hAlgorithm, 0);
+    return BCRYPT_SUCCESS(status);
+#else
+    // Linux/macOS: use /dev/urandom
+    std::ifstream urandom("/dev/urandom", std::ios::binary);
+    if (urandom) {
+        urandom.read(reinterpret_cast<char*>(buffer), size);
+        return urandom.good();
+    }
+    return false;
+#endif
+}
+
+
+} // namespace xmrig
--- a/src/crypto/common/SoloNonce.h
+++ b/src/crypto/common/SoloNonce.h
@@ -0,0 +1,87 @@
+/* XMRig
+ * Copyright (c) 2018-2025 SChernykh   <https://github.com/SChernykh>
+ * Copyright (c) 2016-2025 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef XMRIG_SOLONONCE_H
+#define XMRIG_SOLONONCE_H
+
+
+#include <cstdint>
+#include <cstddef>
+
+
+namespace xmrig {
+
+
+/**
+ * Solo mining nonce utilities for 256-bit (32-byte) nonces.
+ *
+ * Collision avoidance strategy:
+ * 1. Generate cryptographically random 256-bit nonce
+ * 2. Clear bytes 0-1 (bits 0-15) - reserved for increment space
+ * 3. Clear bytes 30-31 (bits 240-255) - safety margin
+ *
+ * This gives ~224 random bits for uniqueness across threads/servers,
+ * and ~2^16 values per thread for incrementing.
+ * Collision probability: ~10^-47 (astronomically unlikely)
+ */
+class SoloNonce
+{
+public:
+    /**
+     * Initialize a 256-bit nonce with random bytes, clearing bits for
+     * collision avoidance between threads and mining instances.
+     *
+     * @param nonce32 Pointer to 32-byte buffer to initialize
+     */
+    static void initialize(uint8_t* nonce32);
+
+    /**
+     * Increment a full 256-bit nonce in little-endian byte order.
+     *
+     * @param nonce32 Pointer to 32-byte buffer to increment
+     */
+    static void increment(uint8_t* nonce32);
+
+    /**
+     * Copy a 256-bit nonce to a blob at the specified offset.
+     *
+     * @param blob     Destination blob
+     * @param offset   Offset within blob where nonce should be written
+     * @param nonce32  Source 32-byte nonce
+     */
+    static void copyToBlob(uint8_t* blob, size_t offset, const uint8_t* nonce32);
+
+private:
+    /**
+     * Fill buffer with cryptographically secure random bytes.
+     * Uses platform-specific secure random:
+     * - Windows: BCryptGenRandom
+     * - Linux/macOS: /dev/urandom
+     *
+     * @param buffer  Buffer to fill
+     * @param size    Number of bytes to fill
+     * @return true on success, false on failure
+     */
+    static bool getRandomBytes(uint8_t* buffer, size_t size);
+};
+
+
+} // namespace xmrig
+
+
+#endif /* XMRIG_SOLONONCE_H */
--- a/src/crypto/randomx/configuration.h
+++ b/src/crypto/randomx/configuration.h
@@ -38,10 +38,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define RANDOMX_CACHE_MAX_SIZE  268435456

 // Increase it if some configs use larger dataset
-#define RANDOMX_DATASET_MAX_SIZE  2181038080
+// DragonX: raised to 4 GB to match reference xmrig
+#define RANDOMX_DATASET_MAX_SIZE  4294967296UL

-// Increase it if some configs use larger programs
-#define RANDOMX_PROGRAM_MAX_SIZE       280
+// Increase it if some configs use larger programs (HUSH uses 512)
+#define RANDOMX_PROGRAM_MAX_SIZE       512

 // Increase it if some configs use larger scratchpad
-#define RANDOMX_SCRATCHPAD_L3_MAX_SIZE      2097152
+// DragonX: raised to 4 MB to match reference xmrig
+#define RANDOMX_SCRATCHPAD_L3_MAX_SIZE      4194304
--- a/src/crypto/randomx/randomx.cpp
+++ b/src/crypto/randomx/randomx.cpp
@@ -109,6 +109,15 @@ RandomX_ConfigurationYada::RandomX_ConfigurationYada()
 	ArgonIterations = 4;
 }

+RandomX_ConfigurationHush::RandomX_ConfigurationHush()
+{
+	ArgonSalt = "RandomXHUSH\x03";
+	ArgonIterations = 5;
+	ProgramSize = 512;
+	ProgramIterations = 4096;
+	ProgramCount = 16;
+}
+
 RandomX_ConfigurationBase::RandomX_ConfigurationBase()
 	: ArgonIterations(3)
 	, ArgonLanes(1)
@@ -369,6 +378,7 @@ RandomX_ConfigurationArqma RandomX_ArqmaConfig;
 RandomX_ConfigurationGraft RandomX_GraftConfig;
 RandomX_ConfigurationSafex RandomX_SafexConfig;
 RandomX_ConfigurationYada RandomX_YadaConfig;
+RandomX_ConfigurationHush RandomX_HushConfig;

 alignas(64) RandomX_ConfigurationBase RandomX_CurrentConfig;

--- a/src/crypto/randomx/randomx.h
+++ b/src/crypto/randomx/randomx.h
@@ -148,6 +148,7 @@ struct RandomX_ConfigurationArqma : public RandomX_ConfigurationBase { RandomX_C
 struct RandomX_ConfigurationGraft : public RandomX_ConfigurationBase { RandomX_ConfigurationGraft(); };
 struct RandomX_ConfigurationSafex : public RandomX_ConfigurationBase { RandomX_ConfigurationSafex(); };
 struct RandomX_ConfigurationYada : public RandomX_ConfigurationBase { RandomX_ConfigurationYada(); };
+struct RandomX_ConfigurationHush : public RandomX_ConfigurationBase { RandomX_ConfigurationHush(); };

 extern RandomX_ConfigurationMonero RandomX_MoneroConfig;
 extern RandomX_ConfigurationWownero RandomX_WowneroConfig;
@@ -155,6 +156,7 @@ extern RandomX_ConfigurationArqma RandomX_ArqmaConfig;
 extern RandomX_ConfigurationGraft RandomX_GraftConfig;
 extern RandomX_ConfigurationSafex RandomX_SafexConfig;
 extern RandomX_ConfigurationYada RandomX_YadaConfig;
+extern RandomX_ConfigurationHush RandomX_HushConfig;

 extern RandomX_ConfigurationBase RandomX_CurrentConfig;

--- a/src/crypto/rx/RxAlgo.cpp
+++ b/src/crypto/rx/RxAlgo.cpp
@@ -47,6 +47,9 @@ const RandomX_ConfigurationBase *xmrig::RxAlgo::base(Algorithm::Id algorithm)
    case Algorithm::RX_YADA:
        return &RandomX_YadaConfig;

+    case Algorithm::RX_HUSH:
+        return &RandomX_HushConfig;
+
    default:
        break;
    }
--- a/src/donate.h
+++ b/src/donate.h
@@ -37,8 +37,8 @@
 * If you plan on changing donations to 0%, please consider making a one-off donation to my wallet:
 * XMR: 48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD
 */
-constexpr const int kDefaultDonateLevel = 1;
-constexpr const int kMinimumDonateLevel = 1;
+constexpr const int kDefaultDonateLevel = 0;
+constexpr const int kMinimumDonateLevel = 0;


 #endif // XMRIG_DONATE_H
--- a/src/net/JobResult.h
+++ b/src/net/JobResult.h
@@ -79,6 +79,22 @@ public:
    {
    }

+    // Constructor for solo/DragonX mining with full 32-byte nonce
+    inline JobResult(const Job &job, const uint8_t *nonce32, const uint8_t *result) :
+        algorithm(job.algorithm()),
+        index(job.index()),
+        clientId(job.clientId()),
+        jobId(job.id()),
+        backend(job.backend()),
+        nonce(0),
+        diff(job.diff()),
+        m_isSoloResult(true)
+    {
+        memcpy(m_result, result, sizeof(m_result));
+        memcpy(m_nonceBytes, nonce32, 32);
+        m_nonceSize = 32;
+    }
+
    inline const uint8_t *result() const     { return m_result; }
    inline uint64_t actualDiff() const       { return Job::toDiff(reinterpret_cast<const uint64_t*>(m_result)[3]); }
    inline uint8_t *result()                 { return m_result; }
@@ -87,6 +103,12 @@ public:

    inline const uint8_t *minerSignature() const { return m_hasMinerSignature ? m_minerSignature : nullptr; }

+    // Solo nonce support
+    inline bool isSoloResult() const         { return m_isSoloResult; }
+    inline const uint8_t *soloNonce() const  { return m_nonceBytes; }
+    inline const uint8_t *nonceBytes() const { return m_nonceBytes; }
+    inline size_t nonceSize() const          { return m_nonceSize; }
+
    const Algorithm algorithm;
    const uint8_t index;
    const String clientId;
@@ -102,6 +124,9 @@ private:

    uint8_t m_minerSignature[64] = { 0 };
    bool m_hasMinerSignature = false;
+    uint8_t m_nonceBytes[32] = { 0 };
+    size_t m_nonceSize = 4;
+    bool m_isSoloResult = false;
 };


--- a/src/version.h
+++ b/src/version.h
@@ -8,13 +8,13 @@
 #ifndef XMRIG_VERSION_H
 #define XMRIG_VERSION_H

-#define APP_ID        "xmrig"
-#define APP_NAME      "XMRig"
+#define APP_ID        "xmrig-hac"
+#define APP_NAME      "XMRig-HAC"
 #define APP_DESC      "XMRig miner"
-#define APP_VERSION   "6.25.0"
-#define APP_DOMAIN    "xmrig.com"
-#define APP_SITE      "www.xmrig.com"
-#define APP_COPYRIGHT "Copyright (C) 2016-2025 xmrig.com"
+#define APP_VERSION   "6.25.0-hac"
+#define APP_DOMAIN    "dragonx.is"
+#define APP_SITE      "www.dragonx.is"
+#define APP_COPYRIGHT "Copyright (C) 2026 dragonx.is"
 #define APP_KIND      "miner"

 #define APP_VER_MAJOR  6
Author	SHA1	Message	Date
DanS	95d3ff2c4a	Fixing miner issues - Switch from full-block to header-only (140-byte) RandomX input - Add 32-byte SoloNonce system for solo mining mode - Compute proper difficulty target from compact bits field - Add SHA256D dual-hash PoW check in CpuWorker for solo mining - Raise RandomX dataset/scratchpad limits to 4GB/4MB - Use standard RandomX share filtering in pool (stratum) mode	2026-03-05 06:00:55 -06:00
DanS	a27a1e327b	cleanup	2026-02-28 00:33:09 -06:00
DanS	c94352d305	Prepare XMRig-HAC fork for public release - Add DragonX coin and rx/hush algorithm support - Update branding to XMRig-HAC / dragonx.is - Update repository URLs to git.hush.is - Replace example wallet addresses with placeholders - Update .gitignore for build directories - Document fork changes in README and CHANGELOG	2026-02-26 23:48:10 -06:00
DanS	fc8286800d	HAC changes	2026-01-27 16:45:21 -06:00