Blackjack verifier

Verify every round.

Check Moon's commitment, rebuild the deterministic deck, and replay the recorded actions without sending your seeds anywhere.

CommitHash is checked first

RebuildDeck is recreated locally

ReplayActions and payout are matched

Round data

Paste or enter a round

● Local only

Game mode

Choose a verifier

More modes are coming

Use the Verify in browser button on a finished Discord game, or paste a verifier payload below.

iOnly completed rounds with a revealed server seed can be fully verified.

Verifier payload optional shortcut

or enter details manually

Game ID Nonce Decks

Server hash Server seed Client seed

Coin

Original bet SOLTotal wager SOLPayout SOL

Result Action history one action per line

◌

Ready to verify

Enter a completed Moon blackjack round to begin.

Proof checks

What Moon verified

—

Server commitmentSHA-256(server seed) matches the published server hash

Waiting

—

Deterministic deckHMAC-SHA256 deck shuffle matches the published seeds and nonce

Waiting

—

Round outcomeActions, wagers, result, and payout match the replay

Waiting

⌁

Verification runs locally.
The verifier uses browser cryptography and does not upload your server seed, client seed, or game history for verification.

Local only