● Post about BIP79 (P2EP/payjoin): Joinmarket developer Adam (waxwing) Gibson sent a post to the Bitcoin-Dev mailing list about the simplified version of the Pay-to-EndPoint (P2EP) proposal described in BIP79. The proposal allows an onchain spender to include an input from the person receiving the transaction alongside the spender’s own inputs, preventing block chain analysts from being able to reasonably assume that all inputs came from the same person. This could make block chain analysis significantly less reliable even if only a fairly small number of people actually use the feature. See Newsletter #27 for details.

Gibson’s suggestions focused on modifying the proposal based on his experience implementing a P2EP-like protocol in the development version of Joinmarket, as well as feedback he’s received from the developers of Samourai Wallet, who have also implemented a variant of the protocol still in developer testing. The goal is to try to get both wallets (and many others) to use the same protocol, and also have it supported by payment processors such as BTCPay. The suggestions are pretty simple: