An individual's identity is a self generated keypair using curve secp256k1 and sha256 hashes. (bip340 looks tempting, still evaluating)
On protocol level and in developer context HEX-string encoding is preferred; otherwise we use plain binary in tranmission.
- We do not specify any identity management, we trust users to hold their own keys.
- We do not specify any recovery schemes, we trust users to learn (not-)lose their keys.