Sha256 Gpu Miner Page

((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

a = hash[0]; b = hash[1]; c = hash[2]; d = hash[3]; e = hash[4]; f = hash[5]; g = hash[6]; h = hash[7];

void sha256_transform(const uint *data, uint *hash) uint W[64]; uint i, t1, t2; uint a, b, c, d, e, f, g, h;

# Create a dummy block header (80 bytes hex) with version, prev hash, merkle root, time, bits # Bits = 0x1d00ffff -> target ~ 0x00000000ffff000000... # For quick demo, we use a very high target (easy)