Bitcoin Optech

Matt Corallo, Gregory Sanders, and Sebastian van Staa joined Optech to discuss Newsletter #397:

• Changes to services and client software including items about FIBRE, L402, and others
• The Bitcoin Core 31.0rc1 testing guide
• OP_TEMPLATEHASH and Taproot-native (Re)bindable Transactions
• And more

You can listen on our website:

https://bitcoinops.org/en/podcast/2026/03/24/

Spotify:

https://open.spotify.com/episode/5Spre9stjgP0iiSjZPrNB7

Apple Podcasts:

https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-397-recap/id1674626983?i=1000757113427

Bitcoin Optech newsletter #397 is here:

• summarizes changes to services/client software including Cake, Sparrow, FIBRE, and more
• Bitcoin Core 31.0rc1
• Optech Newsletter #397 Podcast https://bitcoinops.org/en/newsletters/2026/03/20/

Changes to services and client software:

• Cake Wallet adds Lightning support
• Sparrow 2.4.0 and 2.4.2 released
• Blockstream Jade adds Lightning via Liquid
• Lightning Labs releases agent tools
• Tether launches MiningOS
• FIBRE network relaunched
• TUI for Bitcoin Core released https://bitcoinops.org/en/newsletters/2026/03/20/#changes-to-services-and-client-software

Bitcoin Core 31.0rc1 is a release candidate for the next major version of the predominant full node implementation. A testing guide is available...

https://bitcoinops.org/en/newsletters/2026/03/20/#bitcoin-core-31-0rc1

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.