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Overview
Payjoin. Payjoin preserves privacy by breaking the most common method used to spy on bitcoin users.
News
Payjoin Dev Kit 1.0
Three years after inception, Payjoin Dev Kit's first stable release is here. The Rust library for BIP 77 and BIP 78 Payjoin is published as 1.0.0. Wallets and services that want to let Bitcoin senders and receivers interact to transact can now depend on i
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How Wallet Fingerprints Damage Payjoin Privacy
When a wallet constructs a transaction, it makes dozens of small decisions: input ordering, coin selection, fee estimation, signature encoding. These choices vary systematically across implementations and can be used to identify wallets on-chain. These pa
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Reviving Our Email List Back From the Dead
A couple years back, our team had an email list that gave regular updates on Payjoin's progress from Chaincase/Payjoin Substack. If you are receiving this as an email, it's because you were a subscriber on one of those lists. We're the same team who has p
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Payjoin Foundation Granted 501(c)(3) Status
Payjoin Foundation has received approval from the Internal Revenue Service recognizing the Foundation as tax-exempt under Section 501(c)(3) of the Internal Revenue Code effective July 23, 2025. We announce it now because we have just received the determin
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Payjoin Foundation Receives 501(c)(3) Status
United States Payjoin Foundation has received approval from the Internal Revenue Service recognizing the Foundation as tax-exempt under Section 501(c)(3) of the Internal Revenue Code. The Foundation can now accept tax-deductible charitable contributions t
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