Announcements

NY BitDevs meetups are now on first Thursdays of each month.

Please join us for our next Socratic Seminar. A special thank you to our sponsors Chaincode Labs and Cake Wallet for food, refreshments and event space.

If you can’t make it to the main event please join us at PUBKEY around 9:30PM.

Follow New York BitDevs on:

• Twitter
• BlueSky
• nostr: npub1nydevscv0slx9eyr0chkkdgzqfhtp4guk039akhq6g9fnsrf6lcsup3hqs

Special Guests

We will be joined by our friends at Localhost Research.

Presentation

• Jonathan Harvey-Buschel will present his project researching Lightning Network Gossip.

Mailing Lists, Meetings and Bitcoin Optech

Mailing Lists

bitcoin-dev

• Algorithm Agility for Bitcoin to maintain security in the face of quantum and classic breaks in the signature algorithms
• (BIP Draft) 24 bits for nVersion nonce space instead of 16
• The limitations of cryptographic agility in Bitcoin
• Hourglass V2 Update
• BIP 54 active on Bitcoin Inquisition
• Bitcoin PIPEs v2. Overview and feedback request.
• Extensions to standard tooling for TEMPLATEHASH-CSFS-IK support
• BIP-352: Limiting the number of per-group recipients (K_max)
• Bitcoin Core v29.3 Released
• (BIP Proposal) Output Script Descriptor Annotations
• Bip54: add sequence, timestamp (and version) to GBT
• New bitcoin backbone code release: BIP152, outbound tx support + libbitcoinkernel API feedbacks
• SImple quantum security, at the expense of slower tx time

Delving Bitcoin

• Hornet Node v0.1 Update
• Binohash: Transaction Introspection Without Softforks
• PQ provers for P2PKH outputs
• Ciphera - a Bitcoin ZK Appchain Implementation
• Introducing UltrafastSecp256k1: A Multi-Architecture Exploration of Secp256k1 Optimizations
• Using AI tooling for code review
• A Discussion on Quantum-Resistant Upgrade Paths for Bitcoin
• Stateless VTXO Verification: Decoupling Custody from Implementation-Specific Stacks
• The future of the Bitcoin Core GUI
• Bitcoin PIPEs v2
• Recent OP_RETURN output statistics
• Boomerang: Bitcoin Cold Storage with Built-In Coercion Resistance
• Would OP_SUCCESS (OP_CAT) be spent?

Meetings

• Bitcoin Core general developer meetings
  • February 5
  • February 12
  • February 19
  • February 26
• Lightning Specification meeting
  • Lightning Specification Meeting 2026/03/09
  • Lightning Specification Meeting 2026/02/09

Optech

• Bitcoin Optech Newsletter #394
• Bitcoin Optech Newsletter #393 - Recap Podcast
• Bitcoin Optech Newsletter #392 - Recap Podcast
• Bitcoin Optech Newsletter #391 - Recap Podcast

Network Data

• OP_RETURN counts
• Bitcoin Stale Block Dataset

CVEs and Research

Research

• Nested MuSig2
• Binohash

InfoSec

• Apple patches decade-old iOS zero-day, possibly exploited by commercial spyware
• Researchers discover massive Wi-Fi vulnerability affecting multiple access points
• Five Eyes warn: Patch your Cisco SD-WAN or risk root takeover

Pull Requests and repo updates

Bitcoin Core

• ipc mining: Prevent Assertion `m_node.chainman' failed errors on early startup
• ThreadPool follow-ups, proactive shutdown and HasReason dependency cleanup
• net processing: Add ibd check before processing block for txdownloadman
• doc: Update Guix install for Debian/Ubuntu
• policy: don’t CheckEphemeralSpends on reorg
• Cluster mempool: SFL cost model (take 2)
• guix: use a temporary file over sponge, drop moreutils
• mining: add cooldown to createNewBlock() immediately after IBD
• Fix two issues in p2p_private_broadcast.py
• mempool: expose optimality of mempool to log / rpc
• miniscript: Use Func and Expr when parsing keys, hashes, and locktimes
• index: Check all necessary block data is available before starting to sync
• mining: Break compatibility with existing IPC mining clients
• Add a “tx output spender” index
• coins: don’t mutate main cache when connecting block
• rpc,net: Add private broadcast RPCs
• coins: use dirty entry count for flush warnings and disk space checks
• http: fix submission during shutdown race
• fees: enable CBlockPolicyEstimator return sub 1 sat/vb fee rate estimates
• rpc: add coinbase_tx field to getblock
• rpc: Properly parse -rpcworkqueue/-rpcthreads
• build: Embedded ASMap (3/3): Build binary dump header file
• wallet, rpc: remove settxfee and paytxfee
• validation: remove BLOCK_FAILED_CHILD
• Optimized SFL cluster linearization
• mining: fix -blockreservedweight shadows IPC option
• txgraph: deterministic optimal transaction order
• drop my key from trusted-keys
• kernel: Avoid duplicating symbols in the kernel library
• http: replace WorkQueue and single threads handling for ThreadPool
• consensus/test/doc: cover errors in CheckTxInputs with unit tests
• contrib: utxo_to_sqlite.py: add option to store txid/spk as BLOBs
• wallet: remove PreSelectedInputs and re-activate “AmountWithFeeExceedsBalance” error
• rpc: uptime should begin on application start
• FUZZ: Test that BnB finds best solution
• Split CWallet::Create() into CreateNew and LoadExisting
• mining, ipc: omit dummy extraNonce from coinbase
• script: remove unused SCRIPT_ERR_LAST

BDK

• Add spent/created_txouts to SPK and Keychain TxOut indexes
• Add CODEOWNERS with primary and secondary maintainers

HWI

• psbt: add MuSig2 fields

rust-bitcoin

• p2p: Implement encoding traits HeadersMessage
• p2p: Implement encoding traits for Magic
• bitcoin: reject 65 bytes signature with sighash 0x00
• p2p: Implement encoding traits for MerkleBlock
• consensus_encoding: add track_caller to panic-able sites
• hashes: Fix incremental hashing for sha3-256
• Fix PSBT key deserialisation byte size
• p2p: Re-export hash types
• Add parity to XOnlyPublicKey and adjust API
• psbt: Add bounds check for non-witness UTXO output index
• hashes: Introduce MuHash wrapper type
• primitives: Add fmt traits for simple wrapper types
• remove UnexpectedEof impls for decoder errors
• primitives: Use hashes format implementations and fix reverse hashes
• primitives: Improve test coverage of script
• bitcoin: Encapsulate key wrapper types
• Fix bug in Psbt::spend_utxo when missing output
• primitives: Improve test coverage of witness
• Add next target calculation
• p2p: Implement encoding traits for AddrV2
• p2p: Implement encoding traits for InventoryPayload
• Introduce lifetimes to all public Encoders
• verification(kani): add formal roundtrip proof for CompactSize

libsecp

• hash: remove redundant secp256k1_sha256_initialize in tagged hash midstate functions
• ellswift: fix overflow flag handling in secp256k1_ellswift_xdh
• tests: Improve secp256k1_scalar_check_overflow tests (Issue #1812)
• release process: mention the (Unreleased) link clearly

Core Lightning

• schemas: fix ping requirements documentation
• Add channel_id Filter to listpeerchannels
• CI: stop rebuilding everything in every step!
• Configuration option to specify “fronting nodes” for routehints/blinded paths.
• db: add STRICT tables with migration for old databases
• renepay: refactor and bugfixes
• fuzz: fix uninitialized variable in fuzz-handle_onion_message
• Askrene parallel solving support
• bcli: Refactor bcli plugin to synchronous execution
• Make all peer messages constant message size
• Fix bkpr emergency recover crash
• Gossmap compaction
• Fix peer connect crash
• Gossmap: compaction support
• Test flakes revealed by gossmap compaction
• Update canned gossmaps
• No more legacy onion support
• Fix parsing of offer with currency no amount
• Fix Reckless search command not finding partial matches
• Fixed: enableoffer: Adding an error when trying to activate an used single use offer

eclair

• Add ChannelFundingCreated event
• Lazily load peer storage at node restart
• Don’t automatically use scid_alias for public channels
• Select channel_type for automatic channel creation
• Add type to local/remote error metrics
• Prioritize private channels when relaying payments
• Improve channel and payment events

LDK

• Use HTLC CLTV instead of onion CLTV values for payment claim timer
• (Custom Transactions) Add TxBuilder::get_available_balances
• Merge initial and retry stfu send paths
• Support payments for less than the total MPP value
• Account for missing balance in splice max commitment output tracking
• Avoid sending stfu for quiescent splice action while pending splice
• lightning-block-sync: switch to bitreq, drop chunked_transfer
• Drive splices to completion in chanmon_consistency
• Support HTLC interception by source channel
• Split splice initiation into two phases
• Add support for “phantom” BOLT 12 offers, up to the invoice_request step
• Prevent HTLC double-forwards, prune forwarded onions
• Default to anchors and remove automatic channel acceptance
• Add custom TLV read/write
• Fix thread starvation in test_single_channel_multiple_mpp
• Hold in-flight monitor updates until background event processing
• Switch SplicePrototype feature flag to the prod feature bit
• Support async signing of interactive-tx initial commitment signatures
• Use SignedAmount::unsigned_abs to avoid overflow
• invoice: Use PaymentHash in raw invoice types
• Export outbound_payments directly rather than via re-exports
• Split ChannelManager::read into two stages
• Set dont_forward on private channel updates and add tests
• Add custom TLV in Bolt11 Payer API

lnd

• payments: SQL backend implementation series
• graph: replace fatal assertions and simplify test helpers
• invoices/sql_store: replace catch-all FilterInvoices with targeted index-friendly queries
• rpc: add channel updates to SubscribeChannelEvents
• (g175) graph/db: add gossip-version plumbing for core graph APIs
• scripts: use ephemeral gocache in check-each-commit
• actor: add new abstraction over mailbox
• lncli unlock: wait until daemon can unlock
• actor: add new package for structured concurrency based on the Actor model
• rpcserver: add wallet_synced to GetInfoResponse
• discovery: fix race on remoteUpdateHorizon in GossipSyncer
• discovery: fix gossiper shutdown deadlock
• scripts: update bw-compat test LND base version
• graphdb: fix backwards-compat for channel edge feature deserialization
• discovery: default trickledelay to 1 if less is set
• peer: fix MarkCoopBroadcasted to correctly use local parameter

BIPs

• BIP-310: fix version-rolling.min-bit-count parameter spec
• BIP-174: port public key terminology from BIP 373
• BIP128: Timelock-Recovery Storage Format
• BIP352: Add Sebastian Falbesoner as Author
• BIP 360 - Pay to Merkle Root (P2MR)
• BIP 110: Reduced Data Temporary Softfork
• BIP 89: Chain Code Delegation for Private Collaborative Custody
• BIP 324, 434: Specify p2p v2 one-byte identifier for FEATURE message

BOLTs

• bolt02: clarify tx_init_rbf must ensure conflict with all prior attempts
• Add details for post-anchor dust_limit_satoshis
• Allow either node to send tx_init_rbf in v2 establishment
• Explicit commit_sig retransmission for interactive-tx

New Releases

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Events and Podcasts

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Mining

• FIBRE: The Fast Internet Bitcoin Relay Engine

Miscellaneous

• South Korean crypto firm accidentally sends $44 billion in bitcoin to users
• Script-execution cache poisoning via activation-boundary reorg in RDTS (Bitcoin Knots)
• 2025 Change in Bitcoin ownership
• BIP-110: The Temporary Softfork
• Turn Dependabot Off
• White Noise: A secure and private messenger that’s lightning fast, scalable, and identity-free
• Open-Source Agents Need to Get Serious About Payments
• bitcoin/bitcoin GitHub Stats
• Proposal: Consensus rule to recover 79,956 BTC stolen from MtGox