Now Accepting Payjoin

An old bitcoin privacy technique gets its wings

The new payjoin client is live 🖖 Payjoin.org launched the ability to send and receive payjoin from the static website using new Payjoin Software Development Kit. The response proved demand for better ways to collect payments without revealing the destination of those funds to the public. This experiement created loads of feedback we can use to help your favorite wallets and business integrate this bitcoin privacy upgrade.

Decrypt Covers Payjoin

Alyssa Hertig broke down the goals of payjoin.org and how it works into prose rather than jargon:

PayJoins are different. They're a CoinJoin between just two users—the buyer and the merchant—at the time of sale. As such, PayJoins can be baked into the process of buying anything with Bitcoin.

Check it out here on Decrypt. Share it with a skeptic, their mind might change.

Geyser Campaign

The Payjoin project has raised two million sats on Geyser, enough to run basic payjoin server infrastructure for more than a year! Funders are eligible for a Payjoin Supporter nostr badge for their support.

A How-to Deep Dive

When payjoin.org was put up a few weeks back, there was a demand for a step by step walkthrough of the process. In particular, the feedback asked for an explanation of what the Payjoin SDK does so that payjoin could be implemented it in other languages than Rust too. I’m publishing this early draft for feedback in an effort to answer that demand; build, show, and tell, more in public; and to kickstart foreign language bindings support. It should also help the Summer of Bitcoin students get payjoin into the Bitcoin Dev Kit.

Bonus Podcast: Global Bitcoin Fest Taiwan 🎧

My heart is in Taiwan, and its bitcoin scene is taking off. Virtually all of the ASIC chips for miners are manufactured there. Listen for a history and the future of bitcoin business, manufacturing, policy, and culture in Taiwan. It’s worth a listen.

Wishing the best weekend to you & yours,

Dan