Are any clients doing batch signature validation? #asknostr https://learnmeabitcoin.com/technical/cryptography/elliptic-curve/schnorr/#batch-verify
Not sure, but it is a work in progress for libsecp256k1 https://github.com/bitcoin-core/secp256k1/pull/1134
Nice. Thought since nostr is less critical it might be more readily adopted and tested.