How Dual-Rail receipts work
A receipt is not a PDF logo — it is a bundle your reviewer can re-verify: timestamps, hashes, and a short recipe to reproduce the underlying claim.
Cash path + claim path
Dual-Rail ties payment evidence (cash path) to the scientific or compliance claim (claim path) so procurement can see both rails in one package.
Verify a Lab result
Enter a receipt ID on the Lab verifier (OpenTimestamps, IPFS CIDs, federation identity).
Open receipt verifierBuy a receipt
£49 one-off — request checkout.