Avisos

• Entrem no grupo do Whatsapp São Paulo Bitdevs!
• Respeite a privacidade dos participantes.
• Os meetups nunca são gravados. Queremos todos a vontade para participar e discutir os assuntos programados, de forma anônima se assim o desejarem.

Agradecimentos

• Agradecemos à Vinteum pela casa, comidas e bebidas.

Cronograma

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