bitcoin public key, bitcoin private key, bitcoin multisig Blockstream and bitcoin core developer Pieter Wuille introduced the concept of tree signatures to create a more efficient multi-sig method with enhanced privacy. Tree signatures can be coded only in the extended Alpha scripting language and can implement M-of-N multi-sig transactions more efficiently than bitcoin scripting, as it requires more than one keyholder to participate.
With tree signatures, only the keys actually used for signing are exposed […]