Payjoin (BIP-78 / P2EP)
Privacy● Common
A privacy technique where both sender and receiver contribute inputs to a transaction, breaking the common-input-ownership heuristic used by chain analysis. The receiver adds their own UTXO and receives both payment and change, making the payment amount ambiguous.
Technical Notes
Sender creates initial PSBT, sends to receiver's payjoin endpoint. Receiver adds input(s), adjusts outputs, returns modified PSBT. Sender verifies, signs, broadcasts. Serverless payjoin v2 uses Nostr or other relay mechanisms.
Metadata
Visibility: Public
Created:1/3/2026by System