The DreadPirate Guarantee Letter: A Field-by-Field Guide for Users Who Want to Know What They're Holding
The bitcoin mixer guarantee letter explained in full is a practical resource for users who receive the document and want to understand its components beyond the general instruction to retain it. DreadPirate issues a PGP-signed Letter of Guarantee per transaction, before coins are sent. Each field has a specific purpose, and understanding what each means is the difference between having a useful document and having a saved file.
Input Address: Transaction-Specific, Use Only This
The input address is the specific BTC address generated for this transaction. It is valid only for this order. Send coins only to this address — not to any other DreadPirate address or prior transaction address. This field is the single correct destination for the coins associated with this guarantee letter.
Output Address: Where Clean Coins Arrive
The output address is the verified destination for the mixed coins. Confirm it matches the address the user intends to receive at before sending any coins. If it doesn't match, do not send — contact support to resolve the discrepancy before committing funds.
Fee: The Fixed Commitment for This Transaction
The fee field states the exact percentage for this transaction based on the amount tier. This is a fixed commitment — the fee in the letter is what will be applied, regardless of subsequent market conditions or any other factor.
Delivery Window: 24-Hour Maximum in Writing
The delivery window field states 24 hours as the absolute outer bound. Typical processing is 2–6 hours. The 24-hour maximum is the written commitment against which recovery action can be taken if needed.
PGP Signature: Verify Before Trusting
The PGP signature authenticates the entire document. Verify against the public key at dreadpirate.io/pgp using any PGP verification tool. A valid signature confirms authenticity and that the document is unmodified. Invalid signature: the document has been altered and should not be relied upon.
Check DreadPirate's guarantee letter system: https://dreadpirate.io/
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