Announcements

Please join us for our next Socratic Seminar. A special thank you to our host location The Candy Factory!

Please note the start time! We will open doors at 7pm for socializing, and plan on starting the discussion around 7:30pm.

Presentation

• Joe Brauckmann will present the latest work done on an interesting bitcoin wallet waste analysis metric. Why does UTxO management matter?

In the news

• Bitcoin Hits New All Time High at $112,000 As Corporations Buy Record Amounts of BTC
  • Bitcoin treasuries
• Bitchat: Decentralized Bluetooth Works Without Internet Download
• Unchained Surpasses $1 Billion in Bitcoin-Backed Loan Originations
• SaveOurWallets.org: Support Section 110 of the CLARITY Act
• BTCPayServer crashes on block 896727 coinbase transaction
• Trump to launch branded crypto trading application
• CTV+CSFS letter
• Texas cops cut open crypto ATM to recover $25K lost to scam
• Fuzzamoto just found its first bug on a Bitcoin Core PR

Mailing Lists, Meetings and Bitcoin Optech

Mailing Lists

bitcoin-dev

• The case for privatizing Bitcoin Core
• CTV + CSFS: a letter
• Pre-emptive commit/reveal for quantum-safe migration (poison-pill)
• OP_CAT Enables Winternitz Signatures
• Sybil resistance in different coinjoin implementations
• Post-Quantum commit / reveal Fawkescoin variant as a soft fork
• Allowing Duplicate Keys in BIP 390 musig() Expressions
• Draft BIP: Well-Known Bitcoin Identity Endpoint

Delving Bitcoin

• Why CTV+CSFS and not TXHASH
• Garbled circuits and BitVM3
• Research Update: A Geometric Approach for Optimal Channel Rebalancing
• CTV vault output descriptor
• JIT fees with TXHASH: comparing options for sponsorring and stacking
• Where does the 33.33% threshold for selfish mining come from?
• Scaling Noncustodial Mining Payouts with CTV
• (Rust) descriptor-encrypt: Encrypt any descriptor such that only authorized spenders can decrypt
• Correcting the error in getnetworkhashrateps
• Witnessless Sync for Pruned Nodes

Optech

• Bitcoin Optech Newsletter #356
  • #356 Recap Podcast
• Bitcoin Optech Newsletter #357
  • Recap Podcast
• Bitcoin Optech Newsletter #358
  • Recap Podcast
• Bitcoin Optech Newsletter #359

Network Data

• <1s/vB fee transactions getting mined
• Notes on ‘DoS due to inv-to-send sets growing too large’ from May 2023

CVEs and Research

Research

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InfoSec

• Google fixes bug that could reveal users’ private phone numbers
• Trump Taps Palantir to Compile Data on Americans

Pull Requests and repo updates

Bitcoin Core

• Add checkBlock() to Mining interface
• thread-safety: fix annotations with REVERSE_LOCK
• wallet: have external signer use PSBT error code EXTERNAL_SIGNER_NOT_FOUND
• wallet, refactor: Remove Legacy wallet unused warnings and errors
• wallet, rpc: Return normalized descriptor in parent_descs
• wallet: Fix wallet interface detection of encrypted wallets
• validation: stricter internal handling of invalid blocks
• config: allow setting -proxy per network
• policy: uncap datacarrier by default
• init: Configure reachable networks before we start the RPC server
• fuzz: Add target for coins database
• test: apply microsecond precision to test framework logging
• signet: omit commitment for some trivial challenges
• wallet: init, don’t error out when loading legacy wallets
• wallet, rpc, gui: List legacy wallets with a message about migration

Core Lightning

• wallet: initialize previously closed channels
• lightningd: fix log crash on weird escape lines from plugin.
• CHANGELOG.md: warn that spec compliance mean we broke splicing.
• gossipd: check for existing channel announcement before sigcheck

LDK

• Follow-ups #3741: Exchange splice_locked messages
• option_simple_close: Add feature, messaging types, shutdown script construction
• Exchange splice_locked messages
• fuzz: Add LSPS message decoder fuzzing
• Sort LSPS2 opening fee params menu according to spec requirements
• Check if a batch is expected for commitment_signed
• Don’t generate a commitment if we cannot afford a holding cell feerate
• Async BumpTransactionEventHandler
• Revert attribution of failures
• Fix possible dust HTLC sweep tx when feerate remains unchanged during a bump
• Peer Storage Feature – Part 2
• Separate auxiliary HTLC data from holder commitment transaction
• Implement start_batch message batching
• Channel Establishment for V3 Channels
• Allow counterparty pending monitor update within quiescence handshake
• Allow setting a payer_note on pay_for_offer_from_human_readable_name
• LSPS2: Add error handling events for failed client requests
• Introduce Flow utilities and OffersMessageFlow implementation
• LSPS2: Fail (or abandon) intercepted HTLCs if LSP channel open fails

lnd

• Improve access control in peer connections
• lnrpc: add auth_proof to graph APIs
• (11) graph/db: Implement various “ForEach” methods on the graph SQLStore
• (10) graph/db+sqldb: implement ForEachSourceNodeChannel
• graph/db+sqldb: channel policy SQL schemas, queries and upsert CRUD
• Use spent height as the rescan start height in RegisterSpendNtfn
• lnrpc: add incoming/outgoing channel ids filter to forwarding history request
• htlcswitch: exit early if no adds are in the fwd pkg
• multi: explicitly define InboundFees in ChannelUpdate and ChannelEdgePolicy
• lnrpc: add HtlcIndex to ForwardingEvents
• Add the option on path creator to specify the incoming channel on blinded path
• accessman: remove restrictions on protected/temporary peers
• peer+feature: start to signal the prod rbf coop close bit
• brontide: fix peer disconnection issue
• sqldb+graph/db: add channel tables and implement some channel CRUD

BIPs

• BIP380: make specs consistent about hardened indicators
• 390: clarifications on KEY expression restrictions
• 390: Allow repeated participant pubkeys
• 390: mention about multipath key expression in musig descriptors

New Releases

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Events and Podcasts

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Mining

• BitMain announces a decentralized mining pool solution