Special thanks to Chaincode Labs and NYU Blockchain Digital Asset Forum for food, refreshments and event space.

Announcements

• Apply for the Chaincode residency

Presentation

• Chris Stewart and Nadav Kohen from Suredbits will talk about operating redundant lightning nodes and give a demonstration of Discreet Log Contracts.

Mailing Lists and Bitcoin Optech

Mailing Lists

bitcoin-dev

• A proposal for WTXID-based transaction relay
• BIP 340 updates: even pubkeys, more secure nonce generation
• Nonce blinding protocol for hardware wallets and airgapped signers

lightning-dev

• Using PoDLE in LN
• Decoy nodes and lightweight rendez-vous routing
• On massive channel closing and fee bumping
• Direct Message draft
• Reverse up-front payments

Optech

• Newsletter #85
• Newsletter #86
• Newsletter #87

Network Data

• Analyzing bitcoin mining profitability following ‘The Halving’ and its indication for price
• Stale block at height 619,141

CVEs and Research

Research

• One sideded MimbleWimble transactions
• A Bitcoin payment network with reduced transaction fees and confirmation times
• Taproot in the Generic Group Model
• An examination of the cryptocurrency pump and dump ecosystem
• Bitcoin Crypto–Bounties for Quantum Capable Adversaries
• Securing Proof-of-Work Ledgers via Checkpointing
• Lightning Network: a second path towards centralisation of the Bitcoin economy
• Profit from Two Bitcoin Mining Tactics: Towing and Shutdown
• An airdrop that preserves recipient privacy

InfoSec

• Let’s Encrypt CAA rechecking bug
• Escaping the Chrome Sandbox with RIDL
• Mitigations are attack surface. too
• We tracked 133,000 Ethereum names and exposed their secrets
• Congestion Attacks in Payment Channel Networks
• Route Hijacking and DoS in Off-Chain Networks
• Fulcrum hack
• IOTA theft and downtime
• steemit hostile takeover

Pull Requests and repo updates

Bitcoin Core

• build: Skip i686 build by default in guix and gitian
• wallet: Replace %w by wallet name in -walletnotify script
• Remove forcerelay of rejected txs
• set default bip32derivs to true for psbt methods

libsecp

• Remove Java Native Interface

BIPs

• Recommend synthetic nonces and verifying signing output

eclair

• SendToRoute with routing hints

c-lightning

• v0.8.1
• Bitcoin backend generalization
• Allow hook chaining for the htlc_accepted hook

lnd

• adds fundall flag to openchannel
• Intercept forward htlc [WIP]
• channeldb/kvdb: introduce new KV-store database abstraction

BOLTS

• Single-option large channel proposal

Events

• Stanford Blockchain Conference

Miscellaneous

• DNSSEC root key signing ceremony delayed
• James O’Beirne on Chaincode podcast
• Chaincode Decoded: The UTXO Set
• Stanford Blockchain Conference transcripts
• Boltathon transcripts
• Pheonix v1.2
• Coinkite Bunker
• Zeus v0.2.1
• Circular rebalancing, RTL v0.6.5
• ZEBEDEE SDK and dashboard for LN powered games