Bitcoin Optech Newsletter #426

Bitcoin Optech newsletter #426 is here:

• links to a draft BIP for letting peers choose their own one-byte message type IDs over the version 2 P2P transport
• summarizes a discussion about whether BIPs should include their number in tagged hash tags
• describes a proposed metaprotocol for private onchain transfers that requires no consensus changes
• Optech Newsletter #426 Podcast https://bitcoinops.org/en/newsletters/2026/10/09/

Anthony Towns posted to the Bitcoin-Dev mailing list a draft BIP that lets each peer choose its own one-byte message type IDs for the messages it sends over the v2 P2P transport… https://bitcoinops.org/en/newsletters/2026/10/09/#dynamic-one-byte-message-type-ids-for-bip324

Fabian Jahr posted to the Bitcoin-Dev mailing list asking whether BIPs that use BIP340 tagged hashes should include the BIP number in the tag… https://bitcoinops.org/en/newsletters/2026/10/09/#discussion-of-conventions-for-tagged-hash-tags-in-bips

Misha Komarov posted to Delving Bitcoin about a proposal for a new metaprotocol built on top of Bitcoin, called Shielded Bitcoin, that would enable private transfers while requiring no changes in consensus… https://bitcoinops.org/en/newsletters/2026/10/09/#proposal-for-onchain-private-bitcoin-transfers-with-no-consensus-changes

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