Re: [Uri-review] Registration request for "at" URI scheme

In light of the recent concerns around “.zip” and “.exe” TLDs, wanted to 
mention that we will not use “.at” as a file suffix for exported atproto 
repository content. We are planning to use the binary CAR file format 
(from the IPFS ecosystem), and files would be “.car”, or possibly a 
compound suffix like “<filename>.atproto.car.gz”.

(off-topic for this mailing list, but relevant to concerns around the .at 
TLD specifically)

--bryan

On Mon, 8 May 2023, Alexander Mayrhofer wrote:

> Hello everyone,
>
> I'm Head of R&D at nic.at, the ccTLD Registry for the ".at" Top Level Domain. I do understand that the DNS TLD space is disjunct from the URI naming space, but i do want to point out that registration of URI schemes with stringes identical to a well known, long-established TLD might have potential for confusion between the two name spaces.
>
> I will review the proposal and come back with a more detailed analysis, but for now i'd like to know if the URI scheme experts have considered that case when a schema string overlaps with an active Top-Level-Domain?
>
> Best,
> Alex
>
>
> -----Ursprüngliche Nachricht-----
> Von: Uri-review <uri-review-bounces@ietf.org> Im Auftrag von bnewbold@robocracy.org
> Gesendet: Mittwoch, 3. Mai 2023 05:03
> An: uri-review@ietf.org
> Cc: Bryan Newbold <bryan@blueskyweb.xyz>; Paul Frazee <pfrazee@gmail.com>; Devin Ivy <devin@blueskyweb.xyz>; Jay Graber <jay@blueskyweb.xyz>
> Betreff: [Uri-review] Registration request for "at" URI scheme
>
>
> [re-trying from my personal email; original email was blocked as spam]
>
> Hi Folks!
>
> We are requesting a provisional registration of the "at" URI scheme, for use with the AT Protocol (atproto.com). Details are listed below.
>
> We do expect to add some additional constraints and small tweaks before formalizing the entire protocol, but we will maintain compatibility with existing URIs, and it seems prudent to register provisionally at this time.
>
> -------------
>
> URI scheme name: at
>
> Status: provisional
>
> URI scheme syntax:
>     at://<authority>
>     at://<authority>/<path>
>     at://<authority>/<path>#<fragment>
>
> URI scheme semantics:
>     Reference a repository or record in the Authenticated Transfer Protocol (AT Protocol)
>
> Encoding considerations:
>     Unknown, use with care.
>
> Applications/protocols that use this URI scheme name:
>     The Bluesky social network (https://bsky.app), running on top of AT Protocol
>
> Interoperability considerations:
>     Unknown, use with care.
>
> Security considerations:
>     Unknown, use with care
>
> Contact:
>     - Bryan Newbold <bryan@blueskyweb.xyz>
>
> Change controller:
>     - Bluesky PBLLC
>     - Paul Frazee <pfrazee@gmail.com>
>
> References:
>     "AT Protocol Overview" <https://atproto.com/guides/overview>
>     "ATP URI Scheme" <https://atproto.com/specs/at-uri-scheme>
>
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