Announcements

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General Links

• Bitcoin Optech
• Bitcoin Core PR Review Club
• bitcoin-dev Mailing List
• lightning-dev Mailing List

Mailing Lists, Meetings and Bitcoin Optech

Delving Bitcoin

• Segwit Ephemeral Anchors
• Covenant tools softfork
• Fedimint Overview and Fedipool Theorizing

Mailing Lists

bitcoin-dev

• OP_Expire and Coinbase-Like Behavior: Making HTLCs Safer by Letting Transactions Expire Safely
• Bitcoin Core 26.0 release candidate 2 available
• Cold channels and PathCoin redux
• Future of the bitcoin-dev mailing list
• Implementing Blake3 in Bitcoin Script
• Purely off-chain coin colouring

lightning-dev

• Lightning Address in a Bolt 12 world
• HTLC output aggregation as a mitigation for tx recycling, jamming, and on-chain efficiency (covenants)

Meetings

• Bitcoin PR Review Club
  • #28368 Fee Estimator updates from Validation Interface/CScheduler thread
  • Testing Bitcoin Core 26.0 Release Candidates

Optech

• Newsletter #274, audio recap
• Newsletter #275, audio recap
• Newsletter #276, audio recap
• Newsletter #277, audio recap
• Newsletter #278, audio recap

Pull Requests and repo updates

Bitcoin Core

• mempool: persist with XOR

Eclair

• Avoid unusable channels after a large splice
• Add support for sciddir_or_pubkey

Core Lightning

• Anchors multi utxo
• Add next_funding_txid awareness for dual-fund opens

New Releases

• Bitcoin Core 26.0 Release Candidates

Miscellaneous

• Field Report: A Miniscript Journey
• Codex32: A Shamir Secret Sharing Scheme
• The Stable is the Aesthetic