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Provably fair

Verify: DEMO Summer Brass

FAIR DRAW SEAL ✦ SEALED BEFORE ENTRIES OPEN ✦93E9 84AEVERIFIED · SHA-256

  1. The seal, published before entries opened

    SHA-256 of the secret seed:

    93e984aee5e3c71fc8e305d90742129bbb69434682d29df6ad0db7d0ba20d773

  2. The secret seed, revealed after the draw

    97064bceb0984c37cd2763384e47089072c5d6cc28911a495c6a5f0c231a167f

  3. The locked entry list

    491 entries, one per line as entry number|name · state. SHA-256 of the list joined with newlines:

    e914587465cde7b8b92083ca1ad0be7b14b57cee9a26345ef63faaba142d5447
    Show the full list

  4. The winning entry

    HMAC-SHA256 with the seed as key over slug|count|list hash:

    8eb53c90dd5566e1f47701fd3569bf17dc163aa9284014a62245eac3a383d5af

    The first 12 hex digits as a number, mod 491, gives position 379 in the list (counting from 0): entry #380.

Check it yourself

Runs in your browser with standard cryptography. Nothing is sent to us.