Announcements

Please join us for our next Socratic Seminar. This Socratic Seminar is sponsored by Antidote and Brink. Please speak to the hosts if you’re interested in supporting London BitDevs.

General Links

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

Delving Bitcoin, Mailing Lists, Meetings and Bitcoin Optech

Delving Bitcoin

• Silent Payments for Multiparty Wallets
• [BIP Draft] Co-signer Spending Policies
• The Long Road to Bitcoin Payments
• Btc-verified October Update: Connecting Map to Territory
• Descriptor syntax for hash preimages

Mailing Lists

bitcoindev

• Flame: confidential transactions with Bitcoin proof-of-burn consensus
• Bitcoin Core security policy update
• Exposure-aware transaction construction for wallets
• Lichen: L2s In CHannels ENforced on bitcoin
• LN-GAP : Lightning governed by arbitrary programs

Meetings

• Lightning Specification Meeting 2026/10/19

Optech

• Newsletter #425, audio recap
• Newsletter #426, audio recap
• Newsletter #427, audio recap
• Newsletter #428

Network Data

• Compact block reconstruction degradation between September - October 2026
  • /Satoshi:31.0.0/ peers with no service flags and protocol 70015 pushed transactions, then stopped together on Oct 18
• Effect of Linux Kernel CVE-2026-99999 (CVSS 9.3, PwnScape) on the Bitcoin network
• Addrman health dashboard

CVEs and Research

Research

• Claude reveals ECDSA curve origins
• Trustless Bitcoin Vaults

Ledger

• Ledger investigates fund losses linked to Southeast Asian reseller, warns users

InfoSec

• Disclosure: DoS vulnerabilities fixed in Eclair v0.14.1
• CLN: Self-Referential Channel Announcement DoS disclosure
• Electrum: Malicious server can replace a just-broadcast tx and try to trick user into RBF-ing it
• Attacker exploit against Second’s Ark server took 0.75 BTC
• Blink: The September 19 Attack, The Facts, The Full Story and Announcing The 50% Bounty

Pull Requests and repo updates

LND

• [1/?] Local reputation: subsystem core, read only

BIPs

• BIP139: Wallet Metadata Backup Format

New Releases

• Bitcoin Core 32.1

Privacy

• PISA: async payjoin with cross-input signature aggregation

Miscellaneous

• OpenSats: Finding Vulnerabilities, Funding Defenders
• OpenSats: Supporting the Foundations of Bitcoin Development
• 32.0 Release Candidate Testing Guide