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

• Bounds on chain length with BIP-54 timewarp fixes
• Depots: Theft-Proof, Self-Custodial Bitcoin For Billions Of Users
• Block-wide Signature Aggregation via SNARKs
• PSBT/MuSig2 coordination over Nostr relays: transport invariants for nonce safety under at-least-once delivery
• Shielded Bitcoin: Private Transfers on the Bitcoin L1
• Comparing Bitcoin Covenant Proposals for Vaults
• Implicit Deletions and Improvements in Utreexo IBD
• PQLN: Post-Quantum Security for the Bitcoin Lightning Network’s Off-Chain Surfaces
• Institutional Grade Spending Policies for Statechains

Mailing Lists

bitcoindev

• Standardizing public key exposure classification for existing outputs
• [BIP Proposal] BIP324 One-Byte Message Type ID Alias Assignment
• Convention for tagged hash tags in BIPs
• [BIP Proposal] Wallet label synchronization (BIP-329 records over encrypted stores)
• [BIP Proposal] Transport Feature Negotiation
• Silent payments light clients: measurements and index commitments
• SHRINCS: an efficient hash-based signature scheme for Bitcoin (first draft)

Optech

• Newsletter #420, audio recap
• Newsletter #421, audio recap
• Newsletter #422, audio recap
• Newsletter #423, audio recap
• Newsletter #424, audio recap

CVEs and Research

Liquid Hack

• Liquid Network Security Incident Assessment
• Statement on the Liquid Network incident of 6 September 2026
• mononaut explanation

Research

• Out-of-Order Validation & The Single Spend Check
• PRAWNS
• A review of SHRINCS

InfoSec

• Disclosure: DoS vulnerabilities fixed in Eclair v0.14.0
• Disclosure: Crashing CLN with a flood of pings
• Alby Hub vulnerability
• Trezor: Recent customer data exposed in shipping provider incident
• dergoegge: Something’s been bugging me
• White-Hat Hackers Route Coldcard Exploit Bitcoin Into ‘Recovery Trust’
• Public-interest App Store research: part 1

Pull Requests and repo updates

Bitcoin Core

• Silent Payments: Implement bip352 (take 2)
• Wallet: Add maxfeerate wallet startup option
• wallet: Add importdescriptors interface
• wallet: Add addHDkey interface
• feature: Use different datadirs for different signets
• wallet, rpc: Add listrawtransactions RPC

BIPs

• BIP138: Compact Encryption Scheme for Non-seed Wallet Data
• BIP332: Stale Tip Relay
• BIP461: Deterministic ECDSA Signatures

New Releases

• Bitcoin Core 32.0rc2 release candidate is available

Privacy

• The Many Headaches of CoinJoin

Miscellaneous

• Aaron Dewes: The end of open source in Bitcoin
• radicle
• Lightning spec merged into x402