zero-knowledge · in your browser

Verify a receipt

Paste a mayfly task receipt or a merchant access statement. The Ed25519 signature is checked entirely in your browser — nothing you paste is ever sent to a server.

Receipt or access statement — paste, or drop a .json / .txt file

Optional: pin a public key (PEM) to confirm who signed it

Prefer the command line? Run mayfly attest verify. · Back to mayfly Send