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 https://bitcoinops.org/en/newsletters/2025/06/27/
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...
https://bitcoinops.org/en/newsletters/2025/06/27/#fingerprinting-nodes-using-addr-messages
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...
https://bitcoinops.org/en/newsletters/2025/06/27/#does-any-software-use-h-in-descriptors
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? https://bitcoinops.org/en/newsletters/2025/06/27/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join to discuss or ask questions!
https://riverside.fm/studio/bitcoin-optech