But do you distinguish between "id" as a property vs an id as a property's value? Do you authenticate one but not the other?I don't understand the question. An object is being authenticated, not its id. I mean this procedure described in FEP-fe34:https://codeberg.org/fediverse/fep/src/branch/main/fep/fe34/fep-fe34.md#fetching-from-an-originAnd if there isn't an AS2 representation do you conclude it's not authentic somehow?Non-AS(AP) representation would not be a part of protocol. It is neither authentic nor unauthentic, it is an external resource.