((hash2[0] << 8) & 0xFF0000) """ Helper: prepare block header (Bitcoin-style, 80 bytes) ------------------------------ def make_block_header(version, prev_hash, merkle_root, timestamp, bits, nonce=0): """Pack 80-byte Bitcoin block header (little-endian for each field except nonce)""" header = (pack("<I", version) + pack("<32s", bytes.fromhex(prev_hash)[::-1]) + pack("<32s", bytes.fromhex(merkle_root)[::-1]) + pack("<I", timestamp) + pack("<I", bits) + pack("<I", nonce)) return header
void sha256_transform(const uint *data, uint *hash) uint W[64]; uint i, t1, t2; uint a, b, c, d, e, f, g, h; sha256 gpu miner
hash[0] += a; hash[1] += b; hash[2] += c; hash[3] += d; hash[4] += e; hash[5] += f; hash[6] += g; hash[7] += h; ((hash2[0] << 8) & 0xFF0000) """ Helper: prepare