Announcements

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Mailing Lists, Meetings and Bitcoin Optech

Mailing Lists

bitcoin-dev

• Rust library for joinstr (coinjoin implementation)
• Update on the Great Consensus Cleanup Revival
• Announcing Bitcoin BOSD: Standardized Withdrawal Output Specification for L2s
• Proposal for Quantum-Resistant Address Migration Protocol (QRAMP) BIP
• Transaction expiration should be based on the most recent transaction in a group, not the first
• Finished planned work on BIP 3: Updated BIP Process
• Call for reconfiguration of nodes to relay transactions with fee-rates below 1 sat/vbyte
• UTXO checkpoint transactions

Delving Bitcoin

• Zero-fee commitments for mobile wallets
• Bitcoin Forking Guide
• Bitcoin Inquisition 28.1
• Anecdotal kode (code) for humans
• Highly Available Lightning Channels Revisited – ROUTE OR OUT
• MultisigBackup.com: Backup and recover a k-of-n descriptor using only n seeds
• Signet faucet using TRUC and RBF
• Erlay: Define fanout rate based on the transaction reception method
• Stats on orphanage overflows
• Erlay: Find acceptable target number of peers to fanout to
• Spanning-forest cluster linearization
• Erlay: Select fanout candidates at relay time instead of at relay scheduling time
• Erlay: Filter fanout candidates based on transaction knowledge
• Erlay: Overview and current approach
• Minimal signing flow changes for TRUC channels
• Which ephemeral anchor script should lightning use?
• Disclosure: LDK Duplicate HTLC Force Close Griefing
• Emulating OP_RAND
• ZK-gossip for lightning channel announcements

Meetings

• Bitcoin PR Review Club
  • #31363 Cluster mempool: introduce TxGraph
• Bitcoin Core general developer meetings
  • January 30
  • February 6
  • February 13
• Lightning Specification meeting
  • February 10th

Optech

• Bitcoin Optech Newsletter #338 Recap Podcast
• Bitcoin Optech Newsletter #339
  • Recap Podcast
• Bitcoin Optech Newsletter #340
  • #340 Recap Podcast
• Bitcoin Optech Newsletter #341
• Reorg Calculator

Network Data

• Alby: Lightning Channel Stats: The first 6 months
• Block Size Report
• Mempool Partitioning and Identifying Mining Nodes
• mempool.space adds stratum visualizer
• Xapo sees growth of Lightning Network usage

CVEs and Research

Research

• Addressing Scalability Issues of Blockchains with Hypergraph Payment Networks
• Merkle Mountain Ranges are Optimal: On witness update frequency for cryptographic accumulators
• On the Atomicity and Efficiency of Blockchain Payment Channels
• Privacy-Preserving Multi-Signatures: Generic Techniques and Constructions Without Pairings
• VITARIT: Paying for Threshold Services on Bitcoin and Friends

InfoSec

• Bitcoin Lightning Bug Allows Remote Theft of Bitcoin via LND Nodes
• npm package elliptic key extraction vulnerability

Pull Requests and repo updates

Bitcoin Core

• cmake: add optional source files to bitcoin_crypto and crc32c directly
• contrib: Add deterministic-fuzz-coverage
• cmake: Add libbitcoinkernel target
• contrib: add tool to convert compact-serialized UTXO set to SQLite database
• Fix -norpcwhitelist, -norpcallowip, and similar corner case behavior
• random: Initialize variables in hardware RNG functions
• wallet: fix rescanning inconsistency
• validation: In case of a continued reindex, only activate chain in the end
• net: reduce CAddress usage to CService or CNetAddr
• cmake: add a component for each binary
• wallet: Utilize IsMine() and CanProvide() in migration to cover edge cases
• depends: Fix compiling libevent package on NetBSD
• build: simplify by flattening the dependency graph
• test: Add mockable steady clock, tests for PCP and NATPMP implementations
• test: add mocked Sock that can read/write custom data and/or CNetMessages
• mining: bugfix: Fix duplicate coinbase tx weight reservation
• TxOrphanage: account for size of orphans and count announcements
• Prepare “Open Transifex translations for v29.0” release step
• wallet, assumeutxo: Don’t Assume m_chain_tx_count, Improve wallet RPC errors
• rpc: have getblocktemplate mintime account for timewarp

BDK

• Fix off-by-one error checking coinbase maturity in optional UTxOs

rust-bitcoin

• Make Debug representation of Witness to be slice of hex-encoded bytes strings to improve readability
• Implement Default for Script
• primitives: Add tests to LockTime
• Validate compressed WIF keys
• primitives: store transaction::Version as u32 instead of i32
• Add a tagged hash engine
• Add symmetrical fee calculation method to Weight

libsecp

• README: add instructions for verifying GPG signatures
• schnorrsig: clear out masked secret key in BIP-340 nonce function

Core Lightning

• xpay: don’t MPP if we’re told not to
• xpay below minimum htlc amount should not give up
• offers: add a blinded path if we have no advertized address.
• Wallet can spend takes ages
• Fix: getblockfrompeer was always requesting block from the first peer
• new notifications: plugin_stopped and plugin_started
• common: fix memcpy error in Fischer-Yates shuffle.
• lightningd: don’t kill onchaind if we are forcing a disconnect.
• lightningd: increase startup time for plugins to 120 seconds.
• splice: Don’t let users do unsigned splices
• Ability to unblacklist runes
• pay: Print the HTLC result as soon as it’s known

eclair

• Update Bitcoin Core to v28.1
• Implement option_simple_close
• Check peer features before attempting wake-up
• Secondary mechanism to trigger watches for transactions from past blocks
• Use remote funding when setting max_htlc_value_in_flight
• Add router support for batched splices
• Log balance estimate updates
• Only sync with top peers
• Send channel_announcement for splice transactions on public channels
• Do not estimate balance for local channels

LDK

• PeerStorage: Add feature and store peer storage in ChannelManager
• Eliminate invalid Hop/InboundOnionPayload combinations
• Prefactor for inbound Trampoline parsing/decryption
• Include base input fee in fee, in calculate_our_funding_satoshis()
• Merge probabilistic scores from external source
• Ensure peer_disconnected is called after a handler refuses a connection
• Support receiving async payments
• Trampoline Payload Construction Method
• Support persisting ChannelMonitors after splicing
• Don’t over-allocate invoice bytes
• Add support for mapping old fields to new ones in TLV read macros
• Avoid parsing PublicKeys when handling RGS updates
• Start tracking ChannelMonitors by channel ID in ChainMonitor and ChannelManager
• Set correct counterparty_spendable_height on c.p. revoked HTLCs
• Calculate Trampoline onion packet sizes dynamically.

lnd

• invoicesrpc: remove direct access to ChannelGraph pointer
• graph: ensure topology subscriber handling and network msg handling is synchronous
• For some lncli cmds we should not replace the content with other data
• rpcserver: check blockbeatDispatcher when deciding isSynced
• discovery+graph: move funding tx validation to the gossiper
• graph: remove redundant iteration through a node’s persisted channels
• routing+htlcswitch: fix stuck inflight payments
• discovery+graph: various preparations for moving funding tx validation to the gossiper
• lnrpc+docs: deprecate warning SendToRoute, SendToRouteSync, SendPayment, and SendPaymentSync in Release 0.19

BIPs

• 373: Correct test data mismatches
• 328: test vectors, reference implementation, update to Proposed
• 373: test vectors, reference implementation, update to Proposed
• 390: Add reference implementation
• Render author email addresses in markdown BIPs
• BIP374: add test vectors for secp256k1 generator point

BOLTs

• option_simple_close (features 60/61)
• More clarifications around channel_announcement handling
• Add test vector for (invalid) mixed-case offer encoding

Mining

• Canaan announces Avalon Q miner
• How Bitcoin mining stabilized the grid, saved Texans $18 billion, and earned the ire of Berkshire Hathaway Energy
• Rebooting P2Pool For Bitcoin
• Trading Shares For Bitcoin - User Story
• Using CKPool for P2Pool

Miscellaneous

• Advancements in On-Chain Privacy
• Bitcoin Core project direction p2 - stating the obvious
  • Bitcoin Core scope, concretely
• BitVM: how to bridge using 1-of-N trust assumptions
• Brink receives $50,000 from VanEck
• CoreDev reflections 2024-2025
• How MuSig2 Is Powering Lightning Liquidity with Loop
• Instant Bitcoin Development Environment
• Lightning unchained?
• MEVpool: A Private Mempool Marketplace Standard
• Pathfinding with LDK
• Prosecuting Privacy
• UTXO Oracle back live
• UTXO Sharing
• What’s Driving Bitcoin Adoption in 2025