Sanket Kanjalkar, Jonas Nick, Tadge Dryja, Steven Roose, and Brandon Black joined Optech this week to discuss: - A new onion message network - CTV+CSFS and benefits to PTLCs and BitVM - Vault descriptors - The CTV and CSFS open letter - Winternitz signatures using OP_CAT - Commit/reveal function fobitcoinops.org/en/podcast/2025/07/08

Bitcoin Optech newsletter #361 is here: - describes a proposal to separate the network connections and peer management used for onion message relay from those used for HTLC relay in LN - CTV+CSFS advantages for PTLCs - Vault output script descriptor - Continued discussion about CTV+CSFS advantages for #361 Recap Podcast bitcoinops.org/en/newsletters/2025/07/04 Olaluwa Osuntokun posted to Delving Bitcoin about allowing nodes to use separate connections for relaying onion messages than they use for relaying HTLCs... bitcoinops.org/en/newsletters/2025/07/04/#separating-onion-message-relay-from-htlc-relay Developers continued a previous discussion about the benefits of OP_CHECKTEMPLATEVERIFY (CTV), OP_bitcoinops.org/en/newsletters/2025/07/04/#ctv-csfs-advantages-for-ptlcs Sjors Provoost posted to Delving Bitcoin to discuss how the recovery information for a wallet usinbitcoinops.org/en/newsletters/2025/07/04/#vault-output-script-descriptor Developers continued the previous discussion about how the availability of OP_CHECKTEMPLATEVERIFY bitcoinops.org/en/newsletters/2025/07/04/#continued-discussion-about-ctv-csfs-advantages-for-bitvm James O’Beirne posted an open letter to the Bitcoin-Dev mailing signed by 66 individuals (as of thbitcoinops.org/en/newsletters/2025/07/04/#open-letter-about-ctv-and-csfs Developer Conduition posted to the Bitcoin-Dev mailing list a prototype implementation that uses tbitcoinops.org/en/newsletters/2025/07/04/#op-cat-enables-winternitz-signatures Tadge Dryja posted to the Bitcoin-Dev mailing list a method for allowing individuals to spend UTXObitcoinops.org/en/newsletters/2025/07/04/#commit-reveal-function-for-post-quantum-recovery Steven Roose posted to Delving Bitcoin about a variation on OP_TXHASH called TXSIGHASH that extendbitcoinops.org/en/newsletters/2025/07/04/#op-txhash-variant-with-support-for-transaction-sponsorship Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 1riverside.fm/studio/bitcoin-optech

Earlier today Daniela Brozzoni and Naiyoma joined Murch and schmidty to discuss Newsletter #360: - Fingerprinting Bitcoin Core nodes - Descriptors and BIP380 - Questions from the bitcoin stack exchange about blocking knots nodes, OP_CAT, compact blocks, selfish mining - And more Catch up: bitcoinops.org/en/podcast/2025/07/01

Bitcoin Optech newsletter #360 is here: - summarizes research about fingerprinting full nodes using P2P protocol messages - seeks feedback about possibly removing support for H in BIP32 paths in the BIP380 specification of descriptors - summarizes popular Q&A from Stack Exchange - Optech Newsletter #360 Rebitcoinops.org/en/newsletters/2025/06/27 Dbitcoinops.org/en/newsletters/2025/06/27/#fingerprinting-nodes-using-addr-messages Abitcoinops.org/en/newsletters/2025/06/27/#does-any-software-use-h-in-descriptors Sbitcoinops.org/en/newsletters/2025/06/27/#selected-qa-from-bitcoin-stack-exchange Briverside.fm/studio/bitcoin-optech

Earlier today, Bryan Bishop, Robin Linus, and Rene Pickhardt joined Murch and schmidty to cover: - Restricting access to Bitcoin Core Project discussion - Garbled circuits and BitVM3 - Updates on Lightning channel rebalancing research - Cove Wallet, Liana, Stratum v2 STARK proofs, Breez - And more! Catch upbitcoinops.org/en/podcast/2025/06/24

Earlier today, Antoine Poinsot, Peter Todd, Josh Doman, and TheCharlatan joined us to discuss Newsletter #358: - Selfish mining - Transaction relay censorship resistance - Updates to BIP390 - Encrypting descriptors - The bitcoinkernel project - And more Catch up: bitcoinops.org/en/podcast/2025/06/17

Jose SK, Clara Shikhelman, Vojtěch Strnad, Robin Linus, and Dan Gould joined Murch and schmidty to discuss: - Syncing full nodes without witnesses - Quantum computing report - Transaction weight limit with exception to prevent confiscation - Removing outputs from the UTXO set based on value and time - And More…bitcoinops.org/en/podcast/2025/06/10

Bitcoin Optech newsletter #357 is here: - shares an analysis about syncing full nodes without old witnesses - Changing consensus covering: a quantum computing report, transaction weight limits, removing outputs from the UTXO set based on value and time - Optech Newsletter #357 Recap bitcoinops.org/en/newsletters/2025/06/06 Jose SK posted to Delbitcoinops.org/en/newsletters/2025/06/06/#syncing-full-nodes-without-witnesses Clara Shikhelman postbitcoinops.org/en/newsletters/2025/06/06/#quantum-computing-report Vojtěch Strnad postedbitcoinops.org/en/newsletters/2025/06/06/#transaction-weight-limit-with-exception-to-prevent-confiscation Robin Linus posted tobitcoinops.org/en/newsletters/2025/06/06/#removing-outputs-from-the-utxo-set-based-on-value-and-time Bitcoin Optech will hriverside.fm/studio/bitcoin-optech

Earlier today, Murch and schmidty were joined by Carla Kirk-Cohen, Joost Jager, and Elias Rohrer to discuss #356: - Attributable failures and LN privacy - Several P2P and policy questions from the Bitcoin Stack Exchange - And more! Catch up: bitcoinops.org/en/podcast/2025/06/03