Thank you to all who have contributed over these 8 years: Optech contributors, researchers whose work we have covered, engineers joining us on the podcast, and readers/listeners. 🧡
(Yes, its actually 401 newsletters, we started at Newsletter #0)
quotingBitcoin Optech newsletter #400 is here:
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- recaps the "Testing Bitcoin Core 31.0 Release Candidates" PR Review Club meeting
- Optech Newsletter #400 Podcast
https://bitcoinops.org/en/newsletters/2026/04/10/
'Testing Bitcoin Core 31.0 Release Candidates' was a review club meeting that did not review a particular PR, but rather was a group testing effort. Before each major Bitcoin Core release, extensive testing by the community is considered essential. For this reason, a volunteer writes a testing guide for a release candidate so that as many people as possible can productively test without having to independently ascertain what’s new or changed in the release, and reinvent the various setup steps to test these features or changes...
https://bitcoinops.org/en/newsletters/2026/04/10/#bitcoin-core-pr-review-club
Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.