Fingerprint · locked when the raffle was created

57d54b89f42a71ad446a638631d4e2cd2f5b30e341acab24cd706dfda2f3fcfe

Seed

f260b7b2bf2e68fc76ec32557c1ca5c9ce9cf0d2206d07f6575b80cc27d00f53

Draw steps

draw-1 · picked 5 from 23 entries

reroll-1 · host replaced 1 winner(s), the seed picked 1 from 18 remaining

reroll-2 · host replaced 1 winner(s), the seed picked 1 from 18 remaining

reroll-3 · host replaced 2 winner(s), the seed picked 2 from 18 remaining

reroll-4 · host replaced 2 winner(s), the seed picked 2 from 18 remaining

reroll-5 · host replaced 2 winner(s), the seed picked 2 from 18 remaining

reroll-6 · host replaced 2 winner(s), the seed picked 2 from 18 remaining

reroll-7 · host replaced 2 winner(s), the seed picked 2 from 18 remaining

reroll-8 · host replaced 1 winner(s), the seed picked 1 from 18 remaining

Check it yourself

This runs the whole draw again in your browser and compares the result. Nothing is sent anywhere.

How it works

When the raffle was created we picked a secret 32 byte seed and published its sha256 fingerprint above. Changing the seed later would change the fingerprint.

Each draw step sorts the entries by id, writes each one as id:tickets, and hashes the list. Random numbers come from sha256(seed:list hash:step label:counter), 52 bits at a time, and a pick lands on an entry in proportion to its tickets.

Once winners are announced the seed is published. The button above checks the fingerprint and re-runs every step. Rerolls are their own steps: the host chooses who to replace, the seed chooses who replaces them.