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:
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 Recap Podcast Daniela Brozzoni posted to Delving Bitcoin about research she conducted with developer Naiyoma into identifying the same node on multiple networks using the addr messages it sends... Ava Chow posted to the Bitcoin-Dev mailing list to ask whether any software generates descriptors using uppercase-H to indicate a hardened BIP32 key derivation step... Selected Q&A from Bitcoin Stack Exchange: - Is there any way to block Bitcoin Knots nodes as my peers? - What does OP_CAT do with integers? - Async Block Relaying With Compact Block Relay (BIP152) - Why is attacker revenue in selfish mining disproportional to its hash-power? Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
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 up:
Bitcoin Optech newsletter #358 is here: - describes how the selfish mining danger threshold can be calculated - summarizes an idea about preventing filtering of high feerate transactions - seeks feedback about a proposed change to BIP390 musig() descriptors - announces a new library for encrypting descriptors - recaps the "Separate UTXO set access from validation functions" PR Review Meeting - adds a Selfish Mining topic - Optech Newsletter #358 Recap Antoine Poinsot posted to Delving Bitcoin an expansion of the math from the 2013 paper that gave the selfish mining attack its name... Peter Todd posted to the Bitcoin-Dev mailing list about a mechanism that would allow nodes to drop peers that are filtering high-feerate transactions... Ava Chow posted to the Bitcoin-Dev mailing list to ask if anyone objected to updating BIP390 to allow musig() expressions in output script descriptors to contain the same participant public key more than once... Josh Doman posted to Delving Bitcoin to announce a library he’s built that encrypts the sensitive parts of an output script descriptor or miniscript to the public keys contained within it... 'Separate UTXO set access from validation functions' is a PR by TheCharlatan that allows calling validation functions by passing just the required UTXOs, instead of requiring the complete UTXO set. It is part of the bitcoinkernel project... Selfish mining allows a miner (or cartel of miners) controlling less than a majority of hashrate to keep more block reward per unit of work than the majority of honest miners... Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!