nip73: change "k" tags standard for webpage comments to a hardcoded web (#1836)

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@ -9,26 +9,37 @@ External Content IDs
There are certain established global content identifiers such as [Book ISBNs](https://en.wikipedia.org/wiki/ISBN), [Podcast GUIDs](https://podcastnamespace.org/tag/guid), and [Movie ISANs](https://en.wikipedia.org/wiki/International_Standard_Audiovisual_Number) that are useful to reference in nostr events so that clients can query all the events assosiated with these ids.
`i` tags are used for referencing these external content ids, with `k` tags representing the external content id kind so that clients can query all the events for a specific kind.
`i` tags are used for referencing these external content ids, with `k` tags representing the external content id kind so that clients can query all the events for a specific kind.
## Supported IDs
| Type | `i` tag | `k` tag |
|- | - | - |
| URLs | "`<URL, normalized, no fragment>`" | "`<scheme-host, normalized>`" |
| Hashtags | "#`<topic, lowercase>`" | "#" |
| Geohashes| "geo:`<geohash, lowercase>`" | "geo" |
| Books | "isbn:`<id, without hyphens>`" | "isbn" |
| Podcast Feeds | "podcast:guid:`<guid>`" | "podcast:guid" |
| Podcast Episodes | "podcast:item:guid:`<guid>`" | "podcast:item:guid" |
| Podcast Publishers | "podcast:publisher:guid:`<guid>`" | "podcast:publisher:guid" |
| Movies | "isan:`<id, without version part>`" | "isan" |
| Papers | "doi:`<id, lowercase>`" | "doi" |
| Type | `i` tag | `k` tag |
| --- | --- | --- |
| URLs | "`<URL, normalized, no fragment>`" | "web" |
| Hashtags | "#`<topic, lowercase>`" | "#" |
| Geohashes | "geo:`<geohash, lowercase>`" | "geo" |
| Books | "isbn:`<id, without hyphens>`" | "isbn" |
| Podcast Feeds | "podcast:guid:`<guid>`" | "podcast:guid" |
| Podcast Episodes | "podcast:item:guid:`<guid>`" | "podcast:item:guid" |
| Podcast Publishers | "podcast:publisher:guid:`<guid>`" | "podcast:publisher:guid" |
| Movies | "isan:`<id, without version part>`" | "isan" |
| Papers | "doi:`<id, lowercase>`" | "doi" |
---
## Examples
### Webpages
For the webpage "https://myblog.example.com/post/2012-03-27/hello-world" the "i" and "k" tags are:
```jsonc
[
["i","https://myblog.example.com/post/2012-03-27/hello-world"],
["k", "web"]
]
```
### Books:
- Book ISBN: `["i", "isbn:9780765382030"]` - https://isbnsearch.org/isbn/9780765382030
@ -56,5 +67,3 @@ Each `i` tag MAY have a url hint as the second argument to redirect people to a
`["i", "podcast:item:guid:d98d189b-dc7b-45b1-8720-d4b98690f31f", https://fountain.fm/episode/z1y9TMQRuqXl2awyrQxg]`
`["i", "isan:0000-0000-401A-0000-7", https://www.imdb.com/title/tt0120737]`