Verify a receipt
Check that an audit record was included in a batch anchored on-chain, and that it has not been altered since.
This page runs entirely in your browser and reads the blockchain directly. It sends nothing to our servers — you are not trusting us to tell you the truth. The verification algorithm ispublished and reimplementable.
- Event matches receipt
- Proof reaches the root
- Root anchored on-chain
- Not checked yet
Show the working
Recompute these yourself to check our arithmetic. A verifier you cannot audit is just another authority to trust.
- Canonical event bytes
- keccak256(0x00 ‖ canonical) — computed leaf
- Leaf named in receipt
- Root folded from the proof