Bitcoin Optech newsletter #378 is here:
- announces four vulnerabilities affecting older versions of the Bitcoin Core full node
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #378 Podcast
https://bitcoinops.org/en/newsletters/2025/10/31/
Antoine Poinsot recently posted to the Bitcoin-Dev mailing list four Bitcoin Core security advisories for low-severity vulnerabilities that were fixed in Bitcoin Core 30.0...
Selected Q&A from Bitcoin Stack Exchange:
- Why was -datacarriersize redefined in 2022, and why was the 2023 proposal to expand it not merged?
- What is the smallest valid transaction that can be included in a block?
- Why does Bitcoin Core continue to give witness data a discount even when it is used for inscriptions?
- The ever-growing Bitcoin blockchain size?
- I read that OP_TEMPLATEHASH is a variant of OP_CTV. How do they differ?
https://bitcoinops.org/en/newsletters/2025/10/31/#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 us to discuss or ask questions!