Ask/Knowledge Atlas/Payjoin
Privacy · Maintained 2026

Payjoin

BIP78 Payjoin is an interactive payment construction in which the receiver contributes an input, breaking common-input ownership assumptions and improving transaction privacy without requiring a large coordinated CoinJoin round.

Context

Why it matters

BIP78 Payjoin is an interactive payment construction in which the receiver contributes an input, breaking common-input ownership assumptions and improving transaction privacy without requiring a large coordinated CoinJoin round.

Canonical knowledge

What California Bitcoin maintains

  • BIP78 Payjoin is an interactive payment construction in which the receiver contributes an input, breaking common-input ownership assumptions and improving transaction privacy without requiring a large coordinated CoinJoin round.

Primary and technical sources

Evidence before assertion
BIP78: A Simple Payjoin Proposal

Bitcoin BIPs

Tier 1 · primary

Related concepts

Continue through the knowledge graph
Bitcoin privacyCoinJoinUTXO
Machine accessAgent-ready
https://californiabitcoin.org/api/agent/v1/topic/payjoinhttps://californiabitcoin.org/api/agent/v1/search?q=Payjoinhttps://californiabitcoin.org/api/agent/v1/coveragehttps://californiabitcoin.org/api/agent/v1/sources