Bitcoin Core 32.1, multi-party SP, CLN Dos - Bitcoin Optech Newsletter #429

Bitcoin Optech newsletter #429 is here:

• describes a protocol for creating silent payment transactions from multiparty wallets
• summarizes the responsible disclosure of a denial-of-service vulnerability that affected older versions of Core Lightning
• explains Bitcoin Core’s updated security policy for easily discoverable vulnerabilities
• summarizes popular Q&A from Stack Exchange
• Bitcoin Core 32.1
• Optech Newsletter #429 Podcast https://bitcoinops.org/en/newsletters/2026/10/30/

Oleksandr Kurbatov posted to Delving Bitcoin to describe a protocol to use multiparty inputs in silent payment transactions.. https://bitcoinops.org/en/newsletters/2026/10/30/#silent-payments-for-multiparty-wallets

Nishant Bansal posted to Delving Bitcoin disclosing a denial-of-service vulnerability affecting Core Lightning versions... https://bitcoinops.org/en/newsletters/2026/10/30/#cln-self-referential-channel-announcement-dos-disclosure

Antoine Poinsot posted to the Bitcoin-Dev mailing list that Bitcoin Core has amended its security policy (see Newsletter #306) for vulnerabilities it classifies as easily discoverable... https://bitcoinops.org/en/newsletters/2026/10/30/#bitcoin-core-security-policy-update

Selected Q&A from Bitcoin Stack Exchange

• Why does Bitcoin use both a transaction ID and a witness transaction ID?
• How to sign a MuSig with Bitcoin Core
• What changed in Bitcoin P2P protocol version 70017 compared to 70016? https://bitcoinops.org/en/newsletters/2026/10/30/#selected-qa-from-bitcoin-stack-exchange

Bitcoin Core 32.1 is the latest major release of the network’s predominant full node implementation. Version 32.0 was tagged but never fully released because of last-minute issues. This release includes three security fixes... https://bitcoinops.org/en/newsletters/2026/10/30/#bitcoin-core-32-1

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.