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Verify a draw

When RocketDFS makes a random choice on your behalf — the digits on a Block Pools grid, the props on a Bingo card — it publishes a SHA-256 commitment to the seed before the outcome exists, and publishes the seed itself afterwards. Paste a contest ID — or, for a game dealt per entry like Fantasy Bingo, your card ID — to see both, plus an independent re-derivation of the result.

How the check works

  1. 1. Commit. Before entries close, we draw a 256-bit seed, publish sha256(seed), and keep the seed sealed. The hash cannot be reversed, and it pins us to exactly one seed.
  2. 2. Reveal. Once the outcome can no longer be gamed, we publish the seed and the result it produced.
  3. 3. Verify. Hash the revealed seed and compare it to the commitment. Then run the published algorithm on that seed and check that you get the same result we did.

The algorithm is published in full at /docs/PROVABLY_FAIR.md, so step 3 works outside this site as well as on it.

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