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Agradecimentos

• Agradecemos à Vinteum pela casa, comidas e bebidas.

Cronograma

Aquecimento

• New Vinteum grantee: Johnny Santos
• Vulnerability Report — BRIX

Bitcoin

• Bruno Garcia Was Fuzzing Around and Found Out: Two DoS Bugs in Floresta
• Bitcoin Under Stress: Measuring Infrastructure Resilience 2014-2025
• SegWit and BIP-110 Signaling Dashboard
• MARA joining the #BIP54 party
• Coldcard now supports BIP322 (Proof of Reserve)
• New BIP for feature negotiation
• New BIP to standardize and expand miner search space

Cripto(grafia)

• A SHA-256 Hash That Is Also a Valid ECDSA Signature
• Algorithm Agility for Bitcoin to maintain security in the face of quantum and classic breaks in the signature algorithms
• The limitations of cryptographic agility in Bitcoin
• Lattice HD Wallets: Post-Quantum BIP32 Hierarchical Deterministic Wallets from Lattice Assumptions
  • Blog post — Project Eleven

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Agradecimentos

• Agradecemos à Vinteum pela casa, comidas e bebidas.

Cronograma

Aquecimento

• stopatheight fix (NOT, just the description got changed)
• raw₿it — Visual Raw Transaction Builder & Script Debugger
• BIP3 Merged
• New monitoring tool (log extractor), made by a UnB student.
• Balanço do retreat de DIY HWW na Casa21.
• Utreexo swift sync
• ARK as a channel factory: compressed liquidity management for improved payment feasibility

Bitcoin

• Incremental mutation testing in the Bitcoin Core
• Cluster Mempool Implementation PR Merged 🚀
• Broadcast own transactions only via short-lived Tor or I2P connections
• Was the P2SH upgrade confiscatory?

Vulnerabilities & Bugs

• Wallet Migration bug present in Bitcoin Core wallet 30.0 & 30.1

• Preping to BTC++: Bitcoin Core vulnerabilities
  • CVE-2025-46597 - Highly unlikely remote crash on 32-bit systems
  • CVE-2025-46598 - CPU DoS from unconfirmed transaction processing
  • CVE-2025-54604 - Disk filling from spoofed self connections
  • CVE-2025-54605 - Disk filling from invalid blocks
• More LND vulnerabilities
  • Infinite inbox DoS
  • Replacement stalling attack
  • Excessive failback exploit 2
• Jade vulnerability

Quantum

• Hash Based signature Schema for Bitcoin
• SLH-DSA (SPHINCS) post-quantum signature optimizations

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Agradecimentos

• Agradecemos à Vinteum pela casa, comidas e bebidas.

Cronograma

Aquecimento

• Sumario da Tabconf e Rust Bitcoin Summit
• “TEEs are bad”
• Bruno Garcia explica Integer overflow e a pior vulnerabilidade da história do Bitcoin

Bitcoin

• Topics discussed by bitcoin core developers on their bi-yearly in person meetings
• BIP-444 (?): Reduced Data Temporary Softfork
• Calle of cashu argues why transaction fees are the only viable method to prevent spam in bitcoin.
• Remove BCashJr’s DNS seed from Bitcoin Core

Lightning

• LND 0.20.0-rc2
• Channel jamming mitigation simulation results and updates.

Maneiro

• Concept Review: B-SSL (Bitcoin Secure Signing Layer) — Covenant-Free Vault Model Using Taproot, CSV, and CLTV
• Secure Fountain Codes
• New phoenix wallet with taproot channels support
• bull bitcoin wallet
• feat: pkarr-based seed discovery for bitcoin nodes

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Agradecimentos

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Cronograma

Aquecimento

• Resumo do Bitcoin++ em Riga
• Livro de exercícios de criptografia
• NPM Supply chain attack

Bitcoin

• Todos os endereços Taproot são vulneráveis à computação quantica?
• Disclosure: Exploit de extração de preimage da Eclair
• Backups encriptados
• Eclipsando nodes de Bitcoin

Maneiro

• BTCPayServer agora aceita PIX
• NUT-25
• Tether vai lançar USDT no RGB

Lançamentos

• Krux 25.09.0

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Agradecimentos

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Cronograma

Warmup

• New Bitcoin Research Network
• Novo curso do Edil na UnB
• Bitcoin++ Insider
• Rust Utreexo resources
• Payjoin Foundation

Bitcoin

• Bitcoin Backbone
• State of bitcoinfuzz
• policy: lower the default blockmintxfee, incrementalrelayfee, minrelaytxfee
• Sharing block templates
  • Draft BIP for block template sharing

Cool Shit

• Labitbu
• Vinteum 3 year Report
• KEF format
• SimplicityHL
• Nostr-based oracle resolution for prediction markets on Bitcoin, showcased on Mutinynet
• Confidential Script: Emulate soft forks using stateless TEEs
• DEMO: FROST Signing Using bdk-cli

Mining

• Proof Of Usable Work
• Stratum v2 Uniffi
• Proto Rig and Proto Fleet: A paradigm shift in bitcoin mining

Releases

• BDK Wallet 2.1.0
• BTCPay Server v2.2.0
• Zeus v0.11.3

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Agradecimentos

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Cronograma

Warmup

• Bitcoiner offers its signed snapshots and pre-synced utxo set through torrent
• 💥🔫 Glock: A new standard for verification on Bitcoin
• bitchat: A secure, decentralized, peer-to-peer messaging app that works over Bluetooth mesh networks
• White Noise Chat
• Quantum Bitcoin Summit
• Is recycling coins a thing?
• UnB’s Bitcoin Monitoring Lab

Bitcoin

• Running bitcoin: from core to code, a comparison of clients
• Floresta v0.8.0
• Utreexo Bip is out
• Changes to BIP360 - Changes to Pay-To-Quantum-Resistent-Hash
• Augur: Block’s Open Source Bitcoin Fee Estimation Library
• Chain Code Delegation: Private Access Control for Bitcoin Keys

2nd Layers

• Alby hub v1.18 with BOLT12 support
• Say goodbye to expiry headaches in Ark-based protocols!

Cryptography

• Frostsnap

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Warmup

• NLightning
• Phoenixd suportada como backend no BTCPay
• Zerolink coinjoin coordinator
• Electrum 4.6 features submarine swaps over Nostr

Bitcoin

• Tx passando com 0.1 sat/vB
  • FREE SAMOURAI
  • Degent
• Witnessless Sync for Pruned Nodes
• CTV + CSFS
• The Scroll #4: Intersection Attacks on CoinJoin Anonymity

Mining

• Non-confiscatory transaction weight limit
• Stratum v2 STARK proof demo
• How Stratum V2 Increases Mining Profitability

L2

• Garbled circuits and BitVM3
  • BitVM3
• Peer storage

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Warmup

• First mainnet use of the Taproot Annex
  • A second JPEG has hit the annex

Drama

• Remove arbitrary limits on OP_Return (datacarrier) outputs
  • Mempool space UTXO set report
  • Ava reviews the code
  • Antonie Poisont post on the topic
  • Why would anyone use OP_RETURN over inscriptions aside from fees
  • TX-Pingeon vs garbageman

Bitcoin

• Dust Expiry: Clean the UTXO set from spam
• Legacy wallet removed
• CVE-2024-52919 - Remote crash due to addr message spam (part 2)
  • Bitcoin Core’s website info on the CVE
• Withdrawing OP_VAULT (BIP-345)
• musig2 has finally been merged in to rust bitcoin (musig2 my ears)
• Avoiding xpub+derivation reuse across wallets, in a UX-friendly manner
• Bitcoin and Quantum Computing: Current Status and Future Directions

Cool transaction sheenanigans

• Weighted multisig
• Peach group hug

L2

• Another explanation of how Ark works
• Liquidity requirements for Lightning payments: Ark servers and LSPs compared
• Tangerine Upgrade: BitVM Activation on Clementine & Core Protocol Upgrades
  • Clementine Whitepaper
• Arkade, a Bitcoin-native virtual execution layer

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Agradecimentos

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Cronograma

Warmup

• Someone inscribed this 3.7MB bitcoin music track via slipstream
  • Tx on Mempool Space
• MIT Hackathon - Vinteum resident wins track
  • Sig4Sats
• The 68-bit Bitcoin puzzle has been cracked!

Softforks

• BIP 54: Consensus Cleanup
  • Interview with Antoine Poinsot
• Awesome CTV+CSFS
• bitcoin.softforks.org
• How CTV+CSFS improves BitVM bridges

Bitcoin

• Bitcoin Core 29.0
• SwiftSync: “Near-stateless, fully parallelizable validation of the Bitcoin blockchain with hints about which outputs remain unspent.”
• Against Allowing Quantum Recovery of Bitcoin
• Taplocks: Verifiable but unspendable tapleafs
• Bitcoin Address Poisoning Attacks

Mining

• Bitcoin mining is highly centralized today.

Crypto

• DahLIAS: Discrete Logarithm-Based Interactive Aggregate Signatures

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Cronograma

Warmup

• ARK on signet

Bitcoin

• Bitcoin node P2P traffic analysis
• Antoine Poinsot on Bitcoin Core’s Priorities
• The Evolution of Payjoin: From Two-Party Protocol to Multiparty Framework
• CISA HRF Report
• New mining pool payment system to address economic mining centralization pressures

Crypto(graphy)

• Private key extraction in ECDSA upon signing a malformed input (e.g. a string)

Lightning Network

• Integrate Floresta as a Backend Option in LND
• An Exposition of Pathfinding Strategies Within Lightning Network Clients
• Disclosure: LND Excessive Failback Exploit
• LND’s Deadline-Aware Budget Sweeper

Releases

• Cove Wallet Beta Release
• Group Wallet: Simpler, Stronger, Better