Don't trust us. Verify.

Verify a completed draw

Enter the number of a completed draw. The browser reads its recorded randomness and entries from the blockchain and recomputes the winning tickets. Open rounds and returned rounds have no result to verify. Loading time depends on the network and RPC service.

The draw, as recorded in the lottery contract
Chainlink's random number
One random word per prize place
Winning tickets
Who holds those tickets
Matches what the contract paid out

No draws with winners yet. Returned rounds can be inspected in the archive.

Crypto lottery results

What the verification checks

For a completed draw, the verifier reads the recorded Chainlink randomness, recomputes winning tickets and their owners, and compares the payouts with the contract data. Chainlink VRF proofs are checked by the coordinator on-chain. A matching result confirms these calculations; it does not audit the whole contract or guarantee its safety. Returned rounds have no winner to verify.

Do it by hand

const seed  = RandomWordsFulfilled.outputSeed
const word  = keccak256(abi.encode(seed, 0))
const ticket = word % round.ticketCount
lottery.ticketOwner(roundId, ticket) // = winner