Announcements

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

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Presentation

• 👉 Shehzan Maredia - Discreet Log Contracts in Lava

Mailing Lists, Meetings and Bitcoin Optech

Mailing Lists

bitcoin-dev

• Difficulty in emulating “weaker” OP_SUCCESS and why it should be a real opcode
• Covenants Support - Bitcoin Wiki
• 👉 Full Disclosure: “Transaction-Relay Throughput Overflow Attacks against Off-Chain Protocols”
• Un-FE’d Covenants: Charting a new path to Emulated Covenants via BitVM Integrity Checks
• 👉 ColliderScript: Covenants in Bitcoin via 160-bit hash collisions, summary
• Slashing covenants
• CHECKSIGFROMSTACK(VERIFY/ADD)
• Prevent future duplicate coinbase transactions as part of Consensus Cleanup
• Bitcoin Core on ARM (Windows)
• Multi-byte opcodes
• OP_PAIRCOMMIT
• Broken links to the previous mailing list archive
• Public disclosure of one vulnerability affecting Bitcoin Core <26.0
• File Format for Wallet Inheritance and Recovery
• Bitcoin PoW locked outputs with arbitrary difficulty

Delving Bitcoin

• 👉 Disclosure: irrevocable fees—stealing from LN using revoked commitment transactions
• Bitcoin OP_CAT Use Cases Series #5: Drivechain
• Full Disclosure: “Transaction-Relay Throughput Overflow attacks against Off-Chain Protocols
• op_CAT vs op_CTV vs XMR
• Implementing a Bridge Covenant on OP_CAT-Enabled Bitcoin: A Proof of Concept
• Can parallel validation side-step the slow block issue?
• OP_EXPIRE: Mitigating replacing cycling attacks
• Flexible Coin Earmarks
• Radpool: Decentralised Mining Pool With Futures Contracts For Payouts
• Channel depletion, LN Topology, Cycles and rational behavior of nodes
• 👉 CTV, APO, CAT activity on signet
• Winternitz One Time Signatures, contrasting between Lisp and Script
• Code of Conduct Violation: Banning Antoine Riard for 3 months
• Pluggable Channel Factories
• Research Paper on LN Payment Censorship
• SuperScalar: Laddered Timeout-Tree-Structured Decker-Wattenhofer Factories With Pseudo-Spilman Leaves

Meetings

• Bitcoin PR Review Club
  • #30239 Ephemeral Dust
  • #31397 Track and use all potential peers for orphan resolution
• Bitcoin Core general developer meetings
  • November 7
  • November 14
  • November 21
  • December 5
• Lightning Specification meeting
  • 2024/12/05

Optech

• Bitcoin Optech Newsletter #332
  • Recap Podcast
• Bitcoin Optech Newsletter #331
  • Recap Podcast
• Bitcoin Optech Newsletter #330
  • Recap Podcast
• Bitcoin Optech Newsletter #329
  • Recap Podcast
• Bitcoin Optech Newsletter #328
  • Recap Podcast
• Bitcoin Optech Newsletter #327
  • Recap Podcast

Network Data

• Ark Explorer
• Foundry block races itself, again
• Large rune mint creates 100k tx backlog
• Lightning Routing Replayer
• Magic Eden’s “mempool protection” scheme
• Memento Mori mint timelapse
• Mystery miner has surge of luck
• Review of transactions in mempool below 2 sats/byte
• utxo.live updated

CVEs and Research

Research

• 26% optimization in BitVM-style SHA256 script implementation
• A Tight Analysis of GHOST Consistency
• Algebraic Zero Knowledge Contingent Payment
• An Exposition of Pathfinding Strategies Within Lightning Network Clients
• BRC20 Pinning Attack
• Foundations of Adaptor Signatures
• From One-Time to Two-Round Reusable Multi-Signatures without Nested Forking
• Functional Adaptor Signatures: Beyond All-or-Nothing Blockchain-based Payments
• Glacius: Threshold Schnorr Signatures from DDH with Full Adaptive Security
• 👉 Hash-Based Signature Schemes for Post-Quantum Bitcoin
• On Concrete Security Treatment of Signatures Based on Multiple Discrete Logarithms
• One-More Unforgeability for Multi- and Threshold Signatures
• Push-Button Verification for BitVM Implementations
• Schnorr Signatures are Tightly Secure in the ROM under a Non-interactive Assumption
• SoK: Payment Channel Networks v4
• Two-Round 2PC ECDSA at the Cost of 1 OLE
• Universal Adaptor Signatures from Blackbox Multi-Party Computation

InfoSec

• BDK 2024 Q4 Code Audit
• Europol Dismantles Criminal Messaging Service MATRIX in Major Global Takedown
• Tor under attack
• Vulnerability Report: Privacy Issue in WabiSabi Protocol #116

Pull Requests and repo updates

Bitcoin Core

• wallet: fix crash during watch-only wallet migration
• Package validation: accept packages of size 1
• rpc: Remove submitblock pre-checks
• Improve parallel script validation error debug logging
• 👉 dbwrapper: Bump LevelDB max file size to 32 MiB to avoid system slowdown from high disk cache flush rate
• rpc: add getdescriptoractivity
• policy: ephemeral dust followups
• bench: add support for custom data directory
• Add destroy to BlockTemplate schema
• cluster mempool: Implement changeset interface for mempool
• validation: fix m_best_header tracking and BLOCK_FAILED_CHILD assignment
• benchmark: Improve SipHash_32b accuracy to avoid potential optimization issues
• validation: Remove RECENT_CONSENSUS_CHANGE validation result
• addrman: cap the max_pct to not exceed the maximum number of addresses
• Ephemeral Dust
• test: enhance p2p_orphan_handling
• test: Add combinerawtransaction test to rpc_createmultisig
• depends: Specify CMake generator explicitly
• tracing: Only prepare tracepoint arguments when actually tracing
• Remove mempoolfullrbf
• TxDownloadManager followups
• net: Use actual memory size in receive buffer accounting
• netinfo: add peer services column and outbound-only option
• init: warn, don’t error, when ‘-upnp’ is set

BDK

• fix(electrum): prevent fetch_prev_txout from querying coinbase transactions
• fix(tx_builder)!: make TxBuilder Send safe, remove Clone trait
• feat(chain,wallet)!: Transitive ChainPosition
• Sqlite - allow persisting anchor without tx
• Check time when persisting in rusqlite impl
• fix(core): Fix checkpoint Drop stack overflow
• Use bitcoin::constants::COINBASE_MATURITY

HWI

• add Trezor Safe 3 and Safe 5 to device support matrix table
• Add BitBox02 Simulator

rust-bitcoin

• Explicitly define Ord for NodeInfo
• units: test for C-SEND-SYNC
• Add API scripts and output files
• Change Amount::MAX from u64::MAX to Amount::MAX_MONEY
• Close amounts error types
• Add string regression tests in leaf crates
• units: Remove serde from amounts
• Fix internal weight calculation
• Account for data pushing opcodes in is_standard_op_return
• Fix psbt fuzz crash
• Deprecate iwp weight
• units: Add integration test of API surface
• Re-design and move Block to primitives
• Remove From and Into test impls and create test-specific function for converting between Rust primitives and U256
• transaction: Add plural field getters
• Fix bug in witness stack getters
• Split checked_div_by_weight into floor and ceiling version
• Fix bip34 number parsing for Block
• Improve the amount module
• Update rust-bitcoin-maintainer-tools
• script: remove unsafe marker from slice-to-script conversions
• Introduce impl_bytelike_traits macro

libsecp

• Clear sensitive memory without getting optimized out (revival of #636)
• Name public API structs

Core Lightning

• Release v24.11
• onionmessage forward fail notification
• Quieten gossipd
• xpay maxfee fix
• decode: don’t fail to decode just because a bolt12 invoice has expired.
• Enable seeker autoconnect when started with no peers, disable when –offline
• connectd: fix crash when we get an incoming conn while outgoing attempt is ratelimited
• gossipd: fix crash in seeker rotation code.
• connectd: force our own channel gossip to more peers
• Anchor code cleanup: always use anchors, but only boost to estimateblockfee 12.
• Fix: don’t send anchorspends for onchain commitment txs
• Handle connection better: make connectd know which peers are important
• common: Add a debug mode for tracing
• Xpay: add one to CLTV blockheight
• pyln-client: restore backwards compatibility with CLN prior to 24.08
• Seeker autoconnect
• tests: add pay test over unannounced channels
• askrene: improving the MCF solver
• lightningd: tell gossipd channel is closed if it tells us about our channel and is wrong.
• Aggressive Gossip Seeker
• Splice Interop
• Fix offer payment failure
• bolt12: allow to inject payer_metadata
• Offers: Not just for breakfast anymore!
• xpay: a rewritten payment plugin using askrene and injectpaymentonion
• New RPC command listaddresses
• close: Print multiple txs; Fixes #6467
• Agressive Channeld Restart Testing
• bookkeeper testing for splice-in + splice-out
• lightningd: deprecate decodepay.
• hsmtool.c - Added new method to enable creation of hsm_file from cmd-line args
• onchaind: replay using real block data, not db
• exposesecret: a way to back up the hsm_secret via rpc (if enabled!)
• Add strict-forwarding option
• add listing options to listpays
• Add RPCs to bookkeeper so you can update/set a description on an event
• splice: Script for complex splices
• Askrene refinements: better documentation, channel biases
• Fakechanneld for testing against real topology.
• renepay: pay BOLT11 invoices with description_hash
• bolt12: fix typo about parameters name in err str
• gossipd: Correct evaluation of new channel announcement timestsamp

eclair

• Remove obsolete WatchFundingConfirmed when using RBF
• Decrypt on-the-fly funding trampoline failures
• Properly type Sphinx shared secrets
• Refactor Sphinx failures
• Check HTLC output status before funding HTLC tx
• Various refactoring for trampoline blinded paths
• Rename blinding to pathKey
• Refactor trampoline-to-legacy payments
• Allow plain outgoing_node_id in blinded payment_relay
• Simplify trampoline test helpers
• Update Bitcoin Core to 27.2
• Add logs for balance estimate
• Add force-close notification
• Make cluster serialization support unknown messages
• Don’t relay buggy extra payments

LDK

• Support Trampoline flag in BOLT12 invoices
• Persist unresolved ChannelMonitors on empty height change
• Misc updates to tee up async ChannelMonitorUpdate persist for claims against closed channels
• Gossip filtration fix
• Add the ability to fetch a probability from live liquidity bounds
• Stop sending channel_update in onion failures
• Expand on RGS caching requirements
• Document RGS timestamp usage
• Implement accepting dual-funded channels without contributing
• Follow-ups for ChannelManager::create_bolt11_invoice
• Don’t interpret decayed data as we’ve failed to send tiny values
• Disallow user-provided payer_signing_pubkey
• Support paying directly to Human Readable Names using bLIP 32
• Verify blinded keysend payments
• Add ChannelManager::create_bolt11_invoice
• Experimental offer TLVs
• Re-broadcast channel_announcements every six blocks for a week
• Include invoice requests in async payment onions
• Drop dead code from provide_latest_counterparty_commitment_tx

lnd

• (3/4) - lnwallet/chancloser: add new protofsm based RBF chan closer
• routing: fix mc blinded path behaviour.
• lnrpc: sort Invoice.HTLCs based on HtlcIndex
• (custom channels): refactor AuxTrafficManager to be used for forwarding as well
• Don’t block on channel arbitator startup
• chainreg: use feerate estimator in regtest and simnet
• cmd: fix default timeout for estimateroutefee
• (1/3) Graph RIP: refactor+graph: move all graph related DB code to the graph package
• DynComms (1/n): Implement Quiescence Protocol
• Add Experimental Endorsement Signalling
• pagination: add pagination to wallet transactions
• localchans: recreate missing edge if not found
• lnwallet: log the amounts in the same unit
• lnd: stop graphBuilder during shutdown
• (custom channels): add taproot overlay channel type to channel acceptor
• fix chanArb deadlock
• peer+lnd: fix peer blocking on node shutdown
• multi: generate and pass along HTLC resolution blobs for aux channels
• routerrpc: fix sendpayment_v2 negative fee limit
• multi: fix rpcclient shutdown
• htlcswitch: merge htlc custom records on modify
• Deprecate dust-threshold config value
• Cancel back outgoing dust htlcs before commitment is confirmed.
• lnrpc: return meaningful response instead of empty one
• Add maxFeeRatio parameter to sanityCheckFee in psbt coin selection
• (walletrpc): add sat_per_kw fee option to FundPsbt RPC
• routing+migration32: update migration 32 to use pure TLV encoding for mission control results

BIPs

• BIP-373: denote different public key types/purposes consistently
• BIP125: update status to Final
• BIP 348: OP_CHECKSIGFROMSTACK
• Add BIP 349: OP_INTERNALKEY
• BIP373: Clarify where keys in MuSig fields may appear in the Taproot output
• BIP390: Clarify that musig cannot be used in top-level pk() or pkh()

BLIPs

• Update bLIP 32 to point to BOLT 12 for name/domain inclusion

BOLTs

• Include BIP 353 name info in invoice_requests
• Add a generic Code of Conduct

New Releases

• Bitcoin Core - 27.2, 28.0
• Eclair v0.11.0
• Great Restored Script Interpreter, summary
• Lightning Welder - convert Bolt 12 offers to Bolt 11 invoices
• Wallet Development Kit

Events and Podcasts

• OP_NEXT Livestream
• TABConf 6

Mining

• Bitdeer announces Sealminer A2
• Officials are halting Bitmain units at U.S. ports, industry firms report
  • Bitmain launches US production line
  • Bitmain Denies Links to Huawei Supply Chain Investigation
• Introducing Proto: Building the future of bitcoin mining hardware
• Radpool
  • Custody of Miner’s Coins in Radpool
  • Radpool and Fedipool
  • Validating Shares is Not a Challenge

Miscellaneous

• Adaptors Generalized
• 👉 Analyzing Bitcoin Consensus: Risks in Protocol Upgrades, more
• Ark - Unlocking Liquidity Before Shared Output Expiration
• Bitcoin Design Guide - Silent Payments
• 👉 Bitcoin Fog Operator Sentenced for Money Laundering Conspiracy
• Bitcoin Virtual Channels: Bringing Instant Settlement To Ark
• Blockstream opens new research center in Lugano
• Boost Your Bitcoin Node Sync With UTXO Snapshots
• Court overturns US sanctions against cryptocurrency mixer Tornado Cash
• Covenant support tracker
• 👉 The Fifth Circuit opined that smart contracts cannot be sanctioned by OFAC
• Four takeaways from OP_NEXT -Implementing a Bridge Covenant on OP_CAT-Enabled Bitcoin: A Proof of Concept
• Keeping it Cool: Mining Bitcoin in Space
• Long-Term Support For m1sterc001guy
• Meet Willow, our state-of-the-art quantum chip
• Non-custodial ecash
• On Ossification
• Opensats: Renewing Our Commitment to Bitcoin
• Saving Satoshi: The world’s first interactive, practice-focused game to teach you bitcoin development.
• Simplicity Arrives on Liquid Testnet
• Slow Block Validation Attacks
• Sv2 Roadmap, Q4 2024 - 2025
• Spiral Grant - Bob McElrath
• The Engineering Behind DLC Markets: Crafting a Secure and Simple Trading Platform
• The Practical Economics of a BitVM Bridge
• Tor in Russia: A call for more WebTunnel bridges
• zkalc - calculate how much time cryptographic operations take on a real computer