Token amounts · local currency estimates
BIL / /BEFORE
IT LANDS

OPEN THE RECEIPT

Check the landing.

Your client seed. The server’s commitment. One reproducible result.

Before you play

  1. Open the arcade, select your paper or Bitcoin mode, and open Receipts. Save the next commitment before placing the round.
  2. Choose your own client seed in Profile → Your randomness seed. You can generate one here and paste it into that field. The seed is sent with your next round; generating it here does not change your account.
  3. After settlement, copy the saved receipt JSON and paste it below. Compare it with the commitment you saved before that round.

The server publishes SHA-256 of its seed text before play and reveals that seed after settlement. HMAC-SHA256 combines the revealed seed with your exact client seed, nonce, game, choice and version. Rejection sampling produces the saved outcome; the published payout rules determine the gross return.

01 / YOUR INPUT

Client seed & SHA-256

This tool hashes your client seed. The server commitment hashes a separate, secret server seed. These two hashes have different roles.

02 / SAVED RESULT

Verify a receipt

Paste one individual-game receipt or a settled jackpot round. Historical versions use their saved rules. Seed and receipt inputs stay in this browser; they are not sent by this tool.

03 / PUBLISHED SOURCE

Algorithm & source hashes

Loading the published algorithm…

What these checks establish

A matching check reproduces the result from the disclosed inputs and checks the commitment and payout. The pre-play comparison establishes continuity with the hash you recorded before play. Without that independently saved hash, a receipt alone does not establish when the commitment was published.

Consistent JSON can be fabricated. This tool does not authenticate a receipt’s origin, prove how the secret seed was generated, detect seed searching before a commitment or selective aborted rounds, or certify that a server executed the published source. Browser randomness and source hashes are not an outside audit or certification. Verification does not predict future outcomes or remove the published house advantage.

Read the full game rules, chances and payouts