This is a fork from OpenCL version of the Bitcoin vanity address generator that is adapted to use for the 32btc bounty. These are the change from the original vanity generator: - Replace Random Number Generation of Private Key with Sequental Decrementing Mode, starting key is set with command line arguments - Periodically dump progress (current private key) to a file - Now oclvanitygen generates only compressed addresses from private key, add support for generation of uncompressed addresses - Replace current feature of "read prefixes from file" to "read full addresses from file" (thousands of addresses) - Store addresses (to find) in search efficient O(1) structure like hashset - Remove saving hashes to the GPU's memory; check the addresses immediately Usage: make oclvanitygen ./oclvanitygen -f addresses.txt -o found.txt -k lastkey.txt 5KHon4xmV31t9dFSHzeN3KF3R1EvjnSRCuy5ZcVEL83NZXzsyeE An argument is the starting private key. Or, in HEX: ./oclvanitygen -f addresses.txt -o found.txt -k lastkey.txt 1AD2662234520000000000 Tips for Windows build: Download and install OpenSSL 1.0.2 (full, not light) from https://slproweb.com/products/Win32OpenSSL.html Clone & compile https://github.com/tpruvot/pthreads Install PCRE, AMD APP SDK Set the following variables: SET INCLUDE=C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE;C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\ATLMFC\INCLUDE;C:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\ucrt;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\shared;C:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\winrt SET LIB=C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\LIB\amd64;C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\ATLMFC\LIB\amd64;C:\Program Files (x86)\Windows Kits\10\lib\10.0.16299.0\ucrt\x64;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64;C:\Program Files (x86)\Windows Kits\10\lib\10.0.16299.0\um\x64 SET PATH="C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\amd64";%PATH% Run: nmake -f Makefile.Win64