Bitcoin Mixer Delivery Guarantee: What DreadPirate's PGP-Signed Commitment Actually Contains

A bitcoin mixer delivery guarantee is a meaningful feature only when it is specific, verifiable, and pre-issued — before the user sends coins. A general policy statement about estimated delivery times does not qualify. A PGP-signed document issued per
transaction, containing specific terms, signed with a verifiable key, does.

What the Guarantee Letter Contains
Every DreadPirate transaction generates a PGP-signed Letter of Guarantee before coins are sent. The document contains: the BTC input address to send coins to, the output address where clean coins will be delivered, the applicable fee for the transaction, and the maximum delivery window — 24 hours as the absolute outer bound. The letter is signed using DreadPirate's PGP key, publicly verifiable at https://dreadpirate.io/pgp. It cannot be forged — the cryptographic signature is specific to this key, and any modification to the document would invalidate the signature.
Why Pre-Issuance Matters
The guarantee letter is issued before the user sends coins. This establishes the service's obligations before the user has any exposure. The user receives the letter, verifies the terms, and only then sends coins to the specified input address. Obligation first, then payment. The written commitment precedes the user's action.
The 24-Hour Maximum as a Written Outer Bound
Typical processing window: 2–6 hours. Large transactions receive priority handling. 24-hour maximum is the stated outer bound — the point at which the service's written obligation requires delivery to have occurred. If the 24-hour window approaches without delivery, the appropriate action: check order status using the guarantee letter address and exchange ID, or contact support via Jabber ([email protected]) or TOX.

Check DreadPirate's guarantee letter system: https://dreadpirate.io/