Bitcoin Optech helps Bitcoin users and businesses integrate scaling technologies.
This week’s newsletter summarizes a discussion about storing data in transaction witnesses and references a conversation about mitigating LN jamming. Also included are our regular sections with the summary of a Bitcoin Core PR Review Club meeting and descriptions of notable changes to popular Bitcoin infrastructure software.
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A build error present in COLDCARD firmware for more than five years made seeds generated on affected devices predictable, enabling attackers with no access to the hardware to reconstruct private keys offline and sweep the matching addresses.
Ashigaru Whirlpool is a ZeroLink coinjoin implementation designed to sever all deterministic links between inputs and outputs, ensuring enhanced bitcoin transaction privacy.
The Lightning Network Daemon (LND) is a complete implementation of a Lightning Network node developed by Lightning Labs.
