Satoshi's Cipher uses a cryptographic system to prove that patterns are fair and cannot be manipulated:
server_seed and displays its SHA256 hash publicly.nonce counter (0, 1, 2, 3...).server_seed is revealed, allowing anyone to verify the hash matches and the pattern was fair.
Verification: Calculate SHA256(server_seed) and compare it to the hash shown before the pattern was set. If they match, the pattern was provably fair!
Enter a server seed to calculate its SHA256 hash and verify it matches the pre-committed hash.