Kronos No-Hand

the only giveaway draw you can prove yourself

Run a provably-fair draw

Paste your entrants (one per line), choose how many winners, and draw. You get a public link anyone can open to recompute the result themselves.

Why you can prove this — not just trust it

Every other "random picker" says trust us and hands you a screenshot. This one hands you a proof. The order is the whole game:

  1. Your list is frozen. Each entrant is linked into a tamper-evident chain; its fingerprint (the root) is anchored to Arweave. Add, remove, or reorder anyone later and the chain visibly breaks.
  2. The winner is pinned to a future drand round. drand (the League of Entropy) publishes an unforgeable random value every 30 seconds. We lock onto a round whose value does not exist yet — so nobody, including us, can aim the result.
  3. We draw when that value appears, verifying its BLS signature ourselves — trusting the math, not a relay.
  4. You get a verify link that re-fetches that exact drand round live on any machine and recomputes the winner. Green means it matched. The Arweave receipts prove your list was locked first.

Kronos No-Hand proves our part — that the winner was picked from your list without a thumb on the scale, using public randomness that did not exist until after your list was locked. We do not audit who is on the list; that is yours to stand behind.