Wire pubkey account: unprefixed base58 and a decimal u64 derivation nonce.
Derived pubkey account address: 32 bytes of case-sensitive base58.
Canonical decimal u64 account-derivation nonce, not a transaction nonce.
Non-small-order, prime-order Ed25519 key in the same 32-byte base58 format.
Wire pubkey account: unprefixed base58 and a decimal u64 derivation nonce.