Kelbie

I am working on implementing the [Statechains](https://github.com/RubenSomsen/rubensomsen.github.io/blob/master/img/statechains.pdf) protocol which requires Blind Schnorr so it would have to be compatible with bip-schnorr. ~~[This thread](https://github.com/zkSNACKs/WalletWasabi/issues/414) may be of interest to anyone implementing...

Relevant [thread on StackExchange](https://bitcoin.stackexchange.com/questions/84552/are-sipas-standardized-schnorr-signatures-incompatible-with-blind-signatures) about implementing blind schnorr that is compatible with bip-schnorr. Note that Greg Maxwell [said](https://bitcoin.stackexchange.com/questions/84552/are-sipas-standardized-schnorr-signatures-incompatible-with-blind-signatures#comment97211_84552) that this implementation is insecure.