Bitcoin Optech #236
This week’s newsletter summarizes a proposal for serverless payjoin and describes an idea for allowing proof of payment for LN async payments.

This week’s newsletter summarizes a proposal for serverless payjoin and describes an idea for allowing proof of payment for LN async payments.
This week’s newsletter summarizes a proposal for serverless payjoin and describes an idea for allowing proof of payment for LN async payments. Also included is our regular section with descriptions of notable changes to popular Bitcoin infrastructure software.
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COLDCARD Mk4 is an ultra-secure, verifiable Bitcoin cold wallet. COLDCARD Q is the higher-end model, featuring a full QWERTY keyboard, larger LCD screen, real QR scanner, and additional features.
Coinswap is a functioning, minimal-viable binaries and libraries to perform a trustless, peer-to-peer Maxwell-Belcher Coinswap Protocol. With v0.1.0, Coinswap marketplace is now live on Testnet4.
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