I think we might have different ideas of the purpose of RFCs, but I don't expect end users to read them. What I'm saying is that RFC 8032 already defines a bina

I think we might have different ideas of the purpose of RFCs, but I don't expect end users to read them. What I'm saying is that RFC 8032 already defines a binary encoding for Ed25519 keys (the octet strings you've found). How to encode a binary string in text is IMHO orthogonal, and has nothing to do with Ed25519. Similarly, PKIX definex binary DER encodings, and PEM defines how to encode DER as text. DER : PEM = Ed25519 binary encoding : Base64