Announcements

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Mailing Lists, Meetings and Bitcoin Optech

Mailing Lists

bitcoin-dev

• BIP: DLEQ
• Redefine packages to discourage address reuse
• On Libbitcoinkernel Readyness
• BIP: Sending Silent Payments in PSBTs
• Hardforking Bitcoin to SLH-DSA (Future Proofing)
• Public disclosure of three vulnerabilities affecting Bitcoin Core <v25.0
• Adaptor generalisation
• Pure Swift Bitcoin Protocol implementation (largely experimental)
• Bitcoin Core 28.0 Released
• OP_KEEPCHANGE - mitigating dust outputs

Delving Bitcoin

• OP_PAIRCOMMIT as a candidate for addition to LNhance
• Updates to the Gossip 1.75 proposal post LN summit meeting
• LN Summit 2024 Notes & Summary/Commentary
• Anonymous discount coupons using chaumian ecash
• Bitcoin PIPEs: Covenants on Bitcoin Without Soft Fork
• Bitcoin Inquisition 28.0
• CVE-2024-38365 public disclosure (btcd FindAndDelete bug)
• Support for graphing data
• Non-disclosure of a consensus bug in btcd
• Expanding on BOLT12
• A Lightning Network of multi-party mechanisms
• Lightning Cheques

Meetings

• Bitcoin PR Review Club
  • #30793 add getorphantxs
• Bitcoin Core general developer meetings
  • September 26
  • October 3
  • October 10
  • October 24
• Lightning Specification meeting
  • 2024/10/21

Optech

• Bitcoin Optech Newsletter #326
• Bitcoin Optech Newsletter #325
  • Recap Podcast
• Bitcoin Optech Newsletter #324
  • Recap Podcast
• Bitcoin Optech Newsletter #323
  • Recap Podcast
• Bitcoin Optech Newsletter #322
  • Recap Podcast

Network Data

• 94% of mempool txs are data storage txs
• First block from DATUM mined
• mempool.space now displaying Runes
• [Over 24k BTC stored in Babylon via Taproot]
• Someone is bloating the Testnet4 UTXO set
• testnet4 reorgs, context

CVEs and Research

Research

• Lightning Network Economics: Topology

InfoSec

• Attacking UNIX Systems via CUPS, Part I
• Bitcoin Core
  • Assertion in blocktxn message handling logic
  • Hindered block propagation due to mutated blocks
• GitLab warns of critical arbitrary branch pipeline execution flaw
• Guide for Wallets Employing Bitcoin Core 28.0 Policies
• How Chainalysis Made Their Way into Popular Monero Wallets
• How Cloudflare auto-mitigated world record 3.8 Tbps DDoS attack
• Nonce Reuse in NBitcoin
• Private key extraction over ECDH in secp256k1-node
• Radiant capital attacker obtains 3 of 11 private keys for $58M theft
• Seedsigner security model discussion
• U.S. Wiretap Systems Targeted in China-Linked Hack

Pull Requests and repo updates

Bitcoin Core

• functional test: Additional package evaluation coverage
• optimization: Preallocate addresses in GetAddr based on nNodes
• wallet: optimize migration process, batch db transactions
• ci: display logs of failed unit tests automatically
• build: Fix kernel static lib component install
• Add Signet and testnet4 launch shortcuts for Windows
• validation: Improve input script check error reporting
• rpc: add getorphantxs
• cluster mempool: extend DepGraph functionality
• Mining interface: getCoinbaseMerklePath() and submitSolution()
• docs: Add instructions on how to self-sign bitcoin-core binaries for macOS
• net: Replace libnatpmp with built-in PCP+NATPMP implementation
• contrib: Update asmap link in seeds readme
• multiprocess: Add IPC wrapper for Mining interface
• validation: Disable CheckForkWarningConditions for background chainstate
• Introduce waitTipChanged() mining interface, replace RPCNotifyBlockChange, drop CRPCSignals & g_best_block
• wallet: Write best block to disk before backup

BDK

• feat(chain,wallet)!: rm ConfirmationTime
• feat(bdk_electrum): add use-openssl as a feature
• Replace trait AnchorFromBlockPosition with new struct
• feat(chain,core)!: move Merge to bdk_core
• feat(wallet)!: enable RBF by default on TxBuilder

rust-bitcoin

• Manually implement compute_txid and compute_wtxid
• Move TxIn and TxOut to primitives
• Decode an address string based on prefix
• Remove the I/O error variant when consensus::deserialize‘ing
• Add the ChaCha20Poly1305 AEAD algorithm
• Make changelogs more discoverable
• psbt: Encode keytype as a compact size unsigned integer
• feat: add sign fn for sign_message
• Add version three variant to transaction version
• Use new Sequence::ENABLE_RBF_AND_LOCKTIME
• Input weight prediction helpers for nested P2WPKH
• Support Testnet4 Network
• Implement Arbitrary for signature types
• Refactor Arbitrary for Sequence
• fix: script number overflow check for push_int
• transaction: Remove Default implementations
• Add FeeRate addition and subtraction traits

libsecp

• musig: ctimetests: fix _declassify range for generated nonce points
• Add module “musig” that implements MuSig2 multi-signatures (BIP 327)

Core Lightning

• Injectpaymentonion
• gossipd: at startup don’t send remote channel_update as init update from us
• connectd: fix double-free crash on connection timeout.
• keysend: Add maxfee to keysend for consistency with pay
• pay-plugin: less listpeerchannels load
• 64 bit gs offsets to fix gossip_store crashes
• libplugin-pay: use map for channel hints
• pay: Remember and update channel_hints across payments
• Add getemergencyrecoverdata RPC Command to Fetch Data from emergency.recover File
• anchors: dont include utxos which are csv locked

eclair

• Use shared input’s txOut in shouldSignFirst
• Add detailed error message when splice feerate is incorrect
• Add support for RBF-ing splice transactions
• Automatically disable from_future_htlc when abused
• Enforce recommended feerate for on-the-fly funding
• Add basic liquidity purchase information to funding txs
• Remove support for splicing without quiescence
• Take min feerate into account for recommended fees
• Don’t drop wallet_node_id when wake-up is disabled
• Add support for funding_fee_credit
• Implement on-the-fly funding based on splicing and liquidity ads
• Add recommended_feerates optional message
• Extensible Liquidity Ads
• Allow including routing hints when creating Bolt 11 invoice

LDK

• Serialize blinded Trampoline hops
• Reliably deliver gossip messages from our ChannelMessageHandler
• Don’t over-penalize channels with inflight HTLCs
• Invoice utils: allow to set both description hash and payment hash
• (Splicing) Signer extended with method to sign prev funding transaction input
• Create script file for easy local linting
• Add support for parsing the dns_resolver feature bit
• Add last_local_balance_msats field
• Add the core functionality required to resolve Human Readable Names
• Add an explicit_type TLV syntax for avoiding certain cases of type inference
• Add a PaymentId for inbound payments
• Validate channel_update signatures without holding a graph lock
• Decouple MessageRouter from Router

lnd

• Add cancelSet flag HtlcModify interface
• log: structured logging
• lntest: shutdown all nodes at end of test
• (custom channels): Aux signer batching fixes
• itest+lntest: speed up test setup
• lnd: allow shutdown signal during IsSynced check
• tlv: generate types for gossip unsigned range
• CI: run integration tests against bitcoind v28
• rpcserver+lncli: fix custom channel data encoding issue
• cmd: allow deterministic macaroon derivation with lncli
• chanbackup, server, rpcserver: put close unsigned tx, remote signature and commit height to SCB
• error out when non-anchor channels are tried to bump the force close fee.
• routerrpc: check payaddr before using for probing

BIPs

• BIP-85: Add language code & dice app, TPRV guidance, warn on BIP-32 divergence, grammar & clarity
• BIP327: update status from Draft to Active
• Explicitly mention care around payment instruction expiry in 353
• BIP 300/301: Link to latest code – also shorter/better explanations

BLIPs

• Clean-up duplicate section in bLIP-0002

BOLTs

• Offers

New Releases

• frost npm package
• JoinMarket client for iPad
• libsecp256k1 v0.6.0
• Warnet: The Battle of Galen Erso

Events and Podcasts

• bitcoin++
  • ATX script edition
  • ecash edition
• Brink Podcast - Episode 6: Discussing Pre-25.0 Bitcoin Core Vulnerability Disclosures
• BTCSZN2 - Bitcoin PIPEs
• Frankfurt PoW Summit 2024 - Shielded CSV

Mining

• Bitcoin Mining Industry Report
• OCEAN Pool Launches DATUM Protocol

Miscellaneous

• Brink receives $250,000 from The Draper Foundation
• Bitbox 2 first HWW to support Silent Payments
• Bitcoin Core Funding Report
• BitVM Alliance
• Building in the open: a novel design for smartphone-based bitcoin wallets
• cgminer, jgarzik, satoshi and the history of cpu-miner
• Coinbase now supports sending to Taproot addresses
• Counterparty Partial network outage - Post mortem
• FROST KeyGen For Frost Federation With Broadcast
• Hash-Based Signature Schemes for Post-Quantum Bitcoin
• Highly available LND cluster setup
• Introducing Group Channel Opens on LN+
• libbitcoin syncs full blockchain in 1 hour
• Lightspare introduce Spark, a new statechain-based L2
• Notes from Berlin: The world’s first ecash summit
• OpenSats Issues Second Wave of Education Grants
• Phoneix moves to bLIP 36 LSP spec
• Simplicity Arrives on Liquid Testnet
• Spiral Grants - Austin Krauss, VLSProject, spacebear21, Will Clark
• Strata rollup devnet released
• The Bitcoin Core Kernel
• Understanding Silent Payments - Part Two
• MDK Beta Update: Early Feedback & Expanded Participation