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NIP-35
======
Torrents
-----------
`draft` `optional`
This NIP defined a new `kind 2003` which is Torrent.
`kind 2003` is a simple torrent index where there is enough information to search for content and construct the magnet link. No torrent files exist on nostr.
## Tags
- `btih`: V1 BitTorrent Info Hash, as seen in the [magnet link](https://www.bittorrent.org/beps/bep_0053.html) `magnet:?xt=urn:btih:HASH`
- `file`: A file entry inside the torrent, including the full path ie. `info/example.txt`
In order to make torrents searchable by general category, you SHOULD include a few tags like `movie`, `tv`, `HD`, `UHD` etc.
## Tag prefixes
Tag prefixes are used to label the content with references, ie. `["t", "imdb:1234"]`
- `tcat`: A comma separated text category path, ie. `["t", "tcat:video,movie,4k"]`, this should also match the `newznab` category in a best effort approach.
- `newznab`: The category ID from [newznab](https://github.com/Prowlarr/Prowlarr/blob/develop/src/NzbDrone.Core/Indexers/NewznabStandardCategory.cs)
- `tmdb`: [The movie database](https://www.themoviedb.org/) id.
- `ttvdb`: [TV database](https://thetvdb.com/) id.
- `imdb`: [IMDB](https://www.imdb.com/) id.
- `mal`: [MyAnimeList](https://myanimelist.net/) id.
- `anilist`: [AniList](https://anilist.co/) id.
A second level prefix should be included where the database supports multiple media types.
- `tmdb:movie:693134` maps to `themoviedb.org/movie/693134`
- `ttvdb:movie:290272` maps to `thetvdb.com/movies/dune-part-two`
- `mal:anime:9253` maps to `myanimelist.net/anime/9253`
- `mal:manga:17517` maps to `myanimelist.net/manga/17517`
In some cases the url mapping isnt direct, mapping the url in general is out of scope for this NIP, the section above is only a guide so that implementers have enough information to succsesfully map the url if they wish.
```json
{
"kind": 2003,
"content": "<long-description-pre-formatted>",
"tags": [
["title", "<torrent-title>"],
["btih", "<bittorrent-info-hash>"],
["file", "<file-name>", "<file-size-in-bytes>"],
["file", "<file-name>", "<file-size-in-bytes>"],
["t", "tcat:video,movie,4k"],
["t", "newznab:2045"],
["t", "imdb:tt15239678"],
["t", "tmdb:movie:693134"],
["t", "ttvdb:movie:290272"],
["t", "movie"],
["t", "4k"],
]
}
```
## Implementations
1. [dtan.xyz](https://git.v0l.io/Kieran/dtan)
2. [nostrudel.ninja](https://github.com/hzrd149/nostrudel/tree/next/src/views/torrents)
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