Should we make proofs into IPLD native links

[Gozala]

This is something that comes up every now and then on our side, the fact that that prf are just strings that are serialized CIDs

spec/README.md

Line 355 in 692e8aa

| `prf` | `String[]` | Proof of delegation (hash-linked UCANs) | No |

Implies that we have to do pre / post processing to map those back into CIDs. It is really tempting to just follow the DAG-JSON spec to encode them as links instead https://ipld.io/specs/codecs/dag-json/spec/#links which also specifies exact base encoding that helps with hash consistency

This is not critical and has some size costs associated, but it came enough times that I thought it might be worth surfacing

[expede]

Do you mean wrapping them in {"/": CID}? I think that's a surprising format for people not working in native IPFD, no?