Bitcoin Optech newsletter #338 is here:

• announces a draft BIP for referencing unspendable keys in descriptors
• examines PSBTv2 usage
• corrects our description last week of a new offchain DLC protocol
• changes to services/client software
• #338 Recap

https://bitcoinops.org/en/newsletters/2025/01/24/

Draft BIP for unspendable keys in descriptors:
PSBTv2 integration testing