Tools

Provably Fair verifier

Paste a server seed, client seed, and nonce to recompute a round's SHA-256 hash yourself.

Revealed server seed

Pre-round published hash (optional, to check a match)

Client seed

Nonce / round #

House edge (%)

Enter a revealed server seed and hit Verify to compute its SHA-256 hash and an illustrative crash point, entirely in your browser — nothing is sent to a server.