NIP-22: Adds relay hints for i tags

[vitorpamplona]

The first reply to an I tag determines which relay will be used to store the discussion.

[dluvian]

I think having a web page hint is immensely more useful. It can give context to an otherwise cryptic ID.
["i", "HR6134", "wss://nos.lol"] -> A relay hint doesn't help in deciphering the ID

[vitorpamplona]

Is that a valid I tag? It doesn't follow nip 73.

Without a reply, how do you know where to send a reply to?

[dluvian]

Ohh I didn't know of nip73. I thought i can be anything.

Without a reply, how do you know where to send a reply to?

Just your outbox. You're not addressing anyone

[staab]

This is not backwards compatible, and breaks important functionality, see https://github.com/nostr-protocol/nips/blob/master/73.md#optional-url-hints

The i tag might refer to e.g. a podcast guid, and the author may want to hint a url for clients/users that don't have a podcast guid handler set up.

Anyway, I agree with @dluvian, what's wrong with treating an i comment the same way as a root note for the purposes of relay selection?

[vitorpamplona]

Are we saying that there would be no way to gather any i referenced discussion in specific relays and they all MUST use the author's relay list at all times?

[staab]

Ok, I see the problem. You might have sibling comments on one i subject on different relays, fragmenting the conversation. I don't know if adding something to the comment solves that though. Ideally the relay selection would be based on the publisher of the original content (via website meta tags, rss, whatever), but that's quite a lift both for publishers and consumers.

At the same time, that's probably fine in many cases. The publisher of a given i subject probably won't care much about the comments. On the other hand, if the user is publishing via the publisher's app (like with fountain for example), the app can include a hint. I think instead of adding a hint on an existing tag, a relay tag might make sense for locating comment threads in general.