[Atp] Re: Opening the AT URI (at://) Syntax Discussion

[Stephen Curran <[e-mail]>]

On Fri, Jul 3, 2026 at 4:01 AM Ted Hardie <[e-mail]> wrote:
> I think you have two choices:  define it as an identifier that is not a
URI (thus opening up the syntax) or updating the syntax to one that meets
the URI specification's requirements.  If you take the latter approach, one
way to do it might be to adjust it so that the did is not treated as an
authority.
>
> at:did%3Aplc%3Avwzwgnygau7ed7b7wt5ux7y2%2F
app.bsky.feed.post%2F3k5nobkf2w72g <http://app.bsky.feed.post/3k5nobkf2w72g>

>
I agree that percent-encoding would be the better (albeit much uglier) way,
as just doing a text substitution means that the at: cannot use DID Methods
that embed parts of URIs in the DID -- e.g. the current did:web and
did;webvh Methods. By definition for those methods, percent-encoding is the
only way to embed the DID identifier as proposed as the components allow
any valid URI character. There is no character that can just replace the
":"s.