Developers · Sandbox

Break a signed authorisation.

Get a real Ed25519-signed receipt from the fictional Falcon Demo Bank, then change the amount, the issuer, the text, the account or the recipient. The public verifier explains exactly which check fails.

Issued live by Falcon Demo Bank (fictional), valid 1 hour

Receipt (compact JWS)

Message title

Message text

Verifier's audience (who is checking)

Check against an intended payment

Amount (AED)

Account

Results appear here. Each check is evaluated in a fixed order; the first failure determines the outcome, and every check is listed so you can see why.