32 bytes, copied
The Blake2b-224 hash of the key, 28 bytes: the key hash in Cardano addresses and witnesses.
A copy of the key's 32 bytes.
Whether signature is this key's Ed25519 signature of message, by the rules of libsodium,
which the Cardano ledger verifies with. A signature that is not 64 bytes is false.
An Ed25519 public key, 32 bytes.