High-performance OpenCL GPU miner for Bitcoin-PoW (BTCW). Works with both NVIDIA and AMD GPUs on Windows and Linux.
Pre-built binaries for solo and pool GPU mining. Works with NVIDIA & AMD GPUs.
Required to mine. Run the QT wallet on the same machine as the GPU miner.
Sign up to receive notifications when new miner versions are released.
1 miner has signed up!
🟢
NVIDIA
CUDA OpenCL runtime
Fully Supported🟢
AMD
ROCm / AMDGPU-PRO OpenCL
Fully SupportedThis miner uses OpenCL, the cross-platform GPU compute standard. Unlike CUDA-only miners, it runs on any GPU that provides an OpenCL driver.
1. Download the latest release
Download BTCW_OPENCL_MINER_v1.0.2_win64.zip and extract it to a folder.
2. Start your BTCW node
bitcoin-pow-qt.exe
3. Create a UTXO
Open Window → Console in the node and type:
generate
4. Start the miner
Wait for the node to begin mining, then:
cd x64\Release BTCW_OPENCL_MINER.exe 1
The 1 selects GPU device #1. Use 2, 3, etc. for additional GPUs.
Run one instance per GPU in separate terminals:
BTCW_OPENCL_MINER.exe 1 BTCW_OPENCL_MINER.exe 2 BTCW_OPENCL_MINER.exe 3
BTCW.SPACE OpenCL GPU Miner v1.0.2 Hash found - NONCE: 0707070707070707 Hash no sig low64: 6bfb0091a42a80d9 CONNECTED TO BTCW NODE WALLET ================================= Device: NVIDIA GeForce RTX 4080 SUPER --------------------------------- Hashrate: 18415616.000000 H/s Power: 245 W | Temp: 62 C | Fan: 55% =================================
Hash no sig low64: 0000000000000000 !!! NOT CONNECTED TO BTCW NODE !!! Make sure your wallet has at least 1 utxo.
Prerequisites: Visual Studio 2022 Build Tools, OpenCL SDK (CUDA Toolkit / AMD APP SDK), PDCurses
Build PDCurses first:
git clone https://github.com/wmcbrine/PDCurses.git C:\PDCurses cd C:\PDCurses\wincon nmake -f Makefile.vc clean nmake -f Makefile.vc
Build the miner:
Open an x64 Native Tools Command Prompt for VS 2022, then:
cd path\to\opencl-btcw-miner build.bat
Edit build.bat to adjust CUDA_PATH and PDCURSES_PATH for your system.
Prerequisites:
sudo apt install build-essential ocl-icd-opencl-dev
For NVIDIA:
sudo apt install nvidia-driver-560-server nvidia-opencl-icd
For AMD: Install ROCm or AMDGPU-PRO driver with OpenCL support.
Build & Run:
chmod +x build_linux.sh ./build_linux.sh cd release ./btcw_opencl_miner 1
BTCW_OPENCL_MINER.exe <gpu_number> [work_size]
| Argument | Description |
|---|---|
| gpu_number | 1-based GPU index (required) |
| work_size | Manual global work size override (optional, auto-tuned by default) |
opencl-btcw-miner/
├── opencl_miner.cpp # Windows host code (PDCurses UI)
├── opencl_miner_linux.cpp # Linux host code (headless stdout)
├── mining_kernel.cl # Main OpenCL mining kernel
├── kernels/
│ ├── secp256k1_field.cl # secp256k1 field arithmetic
│ └── secp256k1_point.cl # secp256k1 point operations
├── ecmult_gen_table.bin # Pre-computed EC multiplication table
├── extract_table.py # Table generation utility
├── build.bat # Windows build script
├── build_linux.sh # Linux build script
└── x64/Release/ # Pre-built Windows binary
├── BTCW_OPENCL_MINER.exe
└── kernels/Do NOT start the miner before the node has begun mining. Run generate in the node console first.
Only run one BTCW node per machine when using this miner. Multiple nodes sharing the same shared memory will cause nonce conflicts.
The miner communicates with the node via shared memory (IPC). The node must be running on the same machine.
Kernel files (.cl) are compiled by the OpenCL runtime on first launch and cached in kernel_cache.bin. Delete the cache if you update kernel files.