Bitcoin Optech newsletter #379 is here:

Sebastian Falbesoner posted to Delving about comparing the performance of ECDSA signature validation between OpenSSL and libsecp256k1 over the last decade... https://bitcoinops.org/en/newsletters/2025/11/07/#comparing-performance-of-ecdsa-signature-validation-in-openssl-vs-libsecp256k1

Multiple conversations examined ideas to change the limits of various fields in consensus... https://bitcoinops.org/en/newsletters/2025/11/07/#multiple-discussions-about-restricting-data

Tadge Dryja posted to the Bitcoin-Dev mailing list a proposal for an OP_CHECKINPUTVERIFY (OP_CIV) opcode that enables a locking script to commit to a specific UTXO being spent in the same transaction... https://bitcoinops.org/en/newsletters/2025/11/07/#post-quantum-signature-aggregation

Abdelhamid Bakhta posted to Delving Bitcoin a detailed proposal for a new tapscript opcode OP_STARK_VERIFY which would enable the verification of a specific variant of STARK proof in Bitcoin Script... https://bitcoinops.org/en/newsletters/2025/11/07/#native-stark-proof-verification-in-bitcoin-script

Antoine Poinsot posted to the Bitcoin-Dev mailing list an update on his consensus cleanup work on BIP54... https://bitcoinops.org/en/newsletters/2025/11/07/#bip54-implementation-and-test-vectors

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! https://riverside.fm/studio/bitcoin-optech