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Merge branch 'nostr-protocol:master' into external-content-ids

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01.md
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@ -43,16 +43,16 @@ To obtain the `event.id`, we `sha256` the serialized event. The serialization is
``` ```
To prevent implementation differences from creating a different event ID for the same event, the following rules MUST be followed while serializing: To prevent implementation differences from creating a different event ID for the same event, the following rules MUST be followed while serializing:
- No whitespace, line breaks or other unnecessary formatting should be included in the output JSON.
- No characters except the following should be escaped, and instead should be included verbatim:
- A line break, `0x0A`, as `\n`
- A double quote, `0x22`, as `\"`
- A backslash, `0x5C`, as `\\`
- A carriage return, `0x0D`, as `\r`
- A tab character, `0x09`, as `\t`
- A backspace, `0x08`, as `\b`
- A form feed, `0x0C`, as `\f`
- UTF-8 should be used for encoding. - UTF-8 should be used for encoding.
- Whitespace, line breaks or other unnecessary formatting should not be included in the output JSON.
- The following characters in the content field must be escaped as shown, and all other characters must be included verbatim:
- A line break (`0x0A`), use `\n`
- A double quote (`0x22`), use `\"`
- A backslash (`0x5C`), use `\\`
- A carriage return (`0x0D`), use `\r`
- A tab character (`0x09`), use `\t`
- A backspace, (`0x08`), use `\b`
- A form feed, (`0x0C`), use `\f`
### Tags ### Tags
@ -87,7 +87,7 @@ As a convention, all single-letter (only english alphabet letters: a-z, A-Z) key
Kinds specify how clients should interpret the meaning of each event and the other fields of each event (e.g. an `"r"` tag may have a meaning in an event of kind 1 and an entirely different meaning in an event of kind 10002). Each NIP may define the meaning of a set of kinds that weren't defined elsewhere. This NIP defines two basic kinds: Kinds specify how clients should interpret the meaning of each event and the other fields of each event (e.g. an `"r"` tag may have a meaning in an event of kind 1 and an entirely different meaning in an event of kind 10002). Each NIP may define the meaning of a set of kinds that weren't defined elsewhere. This NIP defines two basic kinds:
- `0`: **metadata**: the `content` is set to a stringified JSON object `{name: <username>, about: <string>, picture: <url, string>}` describing the user who created the event. A relay may delete older events once it gets a new one for the same pubkey. - `0`: **metadata**: the `content` is set to a stringified JSON object `{name: <username>, about: <string>, picture: <url, string>}` describing the user who created the event. [Extra metadata fields](24.md#kind-0) may be set. A relay may delete older events once it gets a new one for the same pubkey.
- `1`: **text note**: the `content` is set to the **plaintext** content of a note (anything the user wants to say). Content that must be parsed, such as Markdown and HTML, should not be used. Clients should also not parse content as those. - `1`: **text note**: the `content` is set to the **plaintext** content of a note (anything the user wants to say). Content that must be parsed, such as Markdown and HTML, should not be used. Clients should also not parse content as those.
And also a convention for kind ranges that allow for easier experimentation and flexibility of relay implementation: And also a convention for kind ranges that allow for easier experimentation and flexibility of relay implementation:

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@ -8,7 +8,9 @@ Follow List
A special event with kind `3`, meaning "follow list" is defined as having a list of `p` tags, one for each of the followed/known profiles one is following. A special event with kind `3`, meaning "follow list" is defined as having a list of `p` tags, one for each of the followed/known profiles one is following.
Each tag entry should contain the key for the profile, a relay URL where events from that key can be found (can be set to an empty string if not needed), and a local name (or "petname") for that profile (can also be set to an empty string or not provided), i.e., `["p", <32-bytes hex key>, <main relay URL>, <petname>]`. The `content` can be anything and should be ignored. Each tag entry should contain the key for the profile, a relay URL where events from that key can be found (can be set to an empty string if not needed), and a local name (or "petname") for that profile (can also be set to an empty string or not provided), i.e., `["p", <32-bytes hex key>, <main relay URL>, <petname>]`.
The `.content` is not used.
For example: For example:

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@ -32,6 +32,8 @@ Relays SHOULD delete or stop publishing any referenced events that have an ident
Relays SHOULD continue to publish/share the deletion events indefinitely, as clients may already have the event that's intended to be deleted. Additionally, clients SHOULD broadcast deletion events to other relays which don't have it. Relays SHOULD continue to publish/share the deletion events indefinitely, as clients may already have the event that's intended to be deleted. Additionally, clients SHOULD broadcast deletion events to other relays which don't have it.
When an `a` tag is used, relays SHOULD delete all versions of the replaceable event up to the `created_at` timestamp of the deletion event.
## Client Usage ## Client Usage
Clients MAY choose to fully hide any events that are referenced by valid deletion events. This includes text notes, direct messages, or other yet-to-be defined event kinds. Alternatively, they MAY show the event along with an icon or other indication that the author has "disowned" the event. The `content` field MAY also be used to replace the deleted events' own content, although a user interface should clearly indicate that this is a deletion reason, not the original content. Clients MAY choose to fully hide any events that are referenced by valid deletion events. This includes text notes, direct messages, or other yet-to-be defined event kinds. Alternatively, they MAY show the event along with an icon or other indication that the author has "disowned" the event. The `content` field MAY also be used to replace the deleted events' own content, although a user interface should clearly indicate that this is a deletion reason, not the original content.

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@ -38,13 +38,14 @@ They are citing from this event. `root-id` and `reply-id` are as above.
>This scheme is deprecated because it creates ambiguities that are difficult, or impossible to resolve when an event references another but is not a reply. >This scheme is deprecated because it creates ambiguities that are difficult, or impossible to resolve when an event references another but is not a reply.
## Marked "e" tags (PREFERRED) ## Marked "e" tags (PREFERRED)
`["e", <event-id>, <relay-url>, <marker>]` `["e", <event-id>, <relay-url>, <marker>, <pubkey>]`
Where: Where:
* `<event-id>` is the id of the event being referenced. * `<event-id>` is the id of the event being referenced.
* `<relay-url>` is the URL of a recommended relay associated with the reference. Clients SHOULD add a valid `<relay-URL>` field, but may instead leave it as `""`. * `<relay-url>` is the URL of a recommended relay associated with the reference. Clients SHOULD add a valid `<relay-URL>` field, but may instead leave it as `""`.
* `<marker>` is optional and if present is one of `"reply"`, `"root"`, or `"mention"`. * `<marker>` is optional and if present is one of `"reply"`, `"root"`, or `"mention"`.
* `<pubkey>` is optional, SHOULD be the pubkey of the author of the referenced event
Those marked with `"reply"` denote the id of the reply event being responded to. Those marked with `"root"` denote the root id of the reply thread being responded to. For top level replies (those replying directly to the root event), only the `"root"` marker should be used. Those marked with `"mention"` denote a quoted or reposted event id. Those marked with `"reply"` denote the id of the reply event being responded to. Those marked with `"root"` denote the root id of the reply thread being responded to. For top level replies (those replying directly to the root event), only the `"root"` marker should be used. Those marked with `"mention"` denote a quoted or reposted event id.
@ -52,6 +53,7 @@ A direct reply to the root of a thread should have a single marked "e" tag of ty
>This scheme is preferred because it allows events to mention others without confusing them with `<reply-id>` or `<root-id>`. >This scheme is preferred because it allows events to mention others without confusing them with `<reply-id>` or `<root-id>`.
`<pubkey>` SHOULD be the pubkey of the author of the `e` tagged event, this is used in the outbox model to search for that event from the authors write relays where relay hints did not resolve the event.
## The "p" tag ## The "p" tag
Used in a text event contains a list of pubkeys used to record who is involved in a reply thread. Used in a text event contains a list of pubkeys used to record who is involved in a reply thread.

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@ -35,7 +35,7 @@ Example mined note
"created_at": 1651794653, "created_at": 1651794653,
"kind": 1, "kind": 1,
"tags": [ "tags": [
["nonce", "776797", "21"] ["nonce", "776797", "20"]
], ],
"content": "It's just me mining my own business", "content": "It's just me mining my own business",
"sig": "284622fc0a3f4f1303455d5175f7ba962a3300d136085b9566801bc2e0699de0c7e31e44c81fb40ad9049173742e904713c3594a1da0fc5d2382a25c11aba977" "sig": "284622fc0a3f4f1303455d5175f7ba962a3300d136085b9566801bc2e0699de0c7e31e44c81fb40ad9049173742e904713c3594a1da0fc5d2382a25c11aba977"

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@ -28,7 +28,7 @@ These are fields that should be ignored or removed when found in the wild:
kind 3 kind 3
====== ======
These are extra fields not specified in NIP-02 that may be present in the stringified JSON of contacts events: These are extra fields not specified in NIP-02 that may be present in the stringified JSON of follow events:
### Deprecated fields ### Deprecated fields

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@ -25,24 +25,23 @@ consider it a "+".
Tags Tags
---- ----
The reaction event SHOULD include `a`, `e` and `p` tags pointing to the note the user is The reaction event SHOULD include `e` and `p` tags from the note the user is reacting to (and optionally `a` tags if the target is a replaceable event). This allows users to be notified of reactions to posts they were mentioned in. Including the `e` tags enables clients to pull all the reactions associated with individual posts or all the posts in a thread. `a` tags enables clients to seek reactions for all versions of a replaceable event.
reacting to. The `p` tag allows authors to be notified. The `e` tags enables clients
to pull all the reactions to individual events and `a` tags enables clients to seek reactions
for all versions of a replaceable event.
The `e` tag MUST be the `id` of the note that is being reacted to. The last `e` tag MUST be the `id` of the note that is being reacted to.
The `a` tag MUST contain the coordinates (`kind:pubkey:d-tag`) of the replaceable being reacted to. The last `p` tag MUST be the `pubkey` of the event being reacted to.
The `p` tag MUST be the `pubkey` of the event being reacted to. The `a` tag MUST contain the coordinates (`kind:pubkey:d-tag`) of the replaceable being reacted to.
The reaction event MAY include a `k` tag with the stringified kind number The reaction event MAY include a `k` tag with the stringified kind number of the reacted event as its value.
of the reacted event as its value.
Example code Example code
```swift ```swift
func make_like_event(pubkey: String, privkey: String, liked: NostrEvent) -> NostrEvent { func make_like_event(pubkey: String, privkey: String, liked: NostrEvent) -> NostrEvent {
var tags: [[String]] = liked.tags.filter {
tag in tag.count >= 2 && (tag[0] == "e" || tag[0] == "p")
}
tags.append(["e", liked.id]) tags.append(["e", liked.id])
tags.append(["p", liked.pubkey]) tags.append(["p", liked.pubkey])
tags.append(["k", liked.kind]) tags.append(["k", liked.kind])
@ -67,8 +66,7 @@ content as an emoji if shortcode is specified.
"tags": [ "tags": [
["emoji", "soapbox", "https://gleasonator.com/emoji/Gleasonator/soapbox.png"] ["emoji", "soapbox", "https://gleasonator.com/emoji/Gleasonator/soapbox.png"]
], ],
"pubkey": "79c2cae114ea28a981e7559b4fe7854a473521a8d22a66bbab9fa248eb820ff6", ...other fields
"created_at": 1682790000
} }
``` ```

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@ -20,7 +20,7 @@ Label Namespace Tag
An `L` tag can be any string, but publishers SHOULD ensure they are unambiguous by using a well-defined namespace An `L` tag can be any string, but publishers SHOULD ensure they are unambiguous by using a well-defined namespace
(such as an ISO standard) or reverse domain name notation. (such as an ISO standard) or reverse domain name notation.
`L` tags are REQUIRED in order to support searching by namespace rather than by a specific tag. The special `ugc` `L` tags are RECOMMENDED in order to support searching by namespace rather than by a specific tag. The special `ugc`
("user generated content") namespace MAY be used when the label content is provided by an end user. ("user generated content") namespace MAY be used when the label content is provided by an end user.
`L` tags starting with `#` indicate that the label target should be associated with the label's value. `L` tags starting with `#` indicate that the label target should be associated with the label's value.
@ -29,7 +29,9 @@ This is a way of attaching standard nostr tags to events, pubkeys, relays, urls,
Label Tag Label Tag
---- ----
An `l` tag's value can be any string. `l` tags MUST include a `mark` matching an `L` tag value in the same event. An `l` tag's value can be any string. If using an `L` tag, `l` tags MUST include a mark matching an `L`
tag value in the same event. If no `L` tag is included, a mark SHOULD still be included. If none is
included, `ugc` is implied.
Label Target Label Target
---- ----
@ -42,7 +44,7 @@ or topics respectively. As with NIP-01, a relay hint SHOULD be included when usi
Content Content
------- -------
Labels should be short, meaningful strings. Longer discussions, such as for a review, or an Labels should be short, meaningful strings. Longer discussions, such as for an
explanation of why something was labeled the way it was, should go in the event's `content` field. explanation of why something was labeled the way it was, should go in the event's `content` field.
Self-Reporting Self-Reporting
@ -158,4 +160,4 @@ Appendix: Known Ontologies
Below is a non-exhaustive list of ontologies currently in widespread use. Below is a non-exhaustive list of ontologies currently in widespread use.
- (social.ontolo.categories)[https://ontolo.social/] - [social.ontolo.categories](https://ontolo.social/)

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@ -0,0 +1,70 @@
NIP-35
======
Torrents
-----------
`draft` `optional`
This NIP defined a new `kind 2003` which is a 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
- `x`: 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`
- `tracker`: (Optional) A tracker to use for this torrent
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. `["i", "imdb:1234"]`
- `tcat`: A comma separated text category path, ie. `["i", "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.
```jsonc
{
"kind": 2003,
"content": "<long-description-pre-formatted>",
"tags": [
["title", "<torrent-title>"],
["x", "<bittorrent-info-hash>"],
["file", "<file-name>", "<file-size-in-bytes>"],
["file", "<file-name>", "<file-size-in-bytes>"],
["tracker", "udp://mytacker.com:1337"],
["tracker", "http://1337-tracker.net/announce"],
["i", "tcat:video,movie,4k"],
["i", "newznab:2045"],
["i", "imdb:tt15239678"],
["i", "tmdb:movie:693134"],
["i", "ttvdb:movie:290272"],
["t", "movie"],
["t", "4k"],
]
}
```
## Torrent Comments
A torrent comment is a `kind 2004` event which is used to reply to a torrent event.
This event works exactly like a `kind 1` and should follow `NIP-10` for tagging.
## 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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@ -46,6 +46,8 @@ Any other status types can be used but they are not defined by this NIP.
The status MAY include an `r`, `p`, `e` or `a` tag linking to a URL, profile, note, or parameterized replaceable event. The status MAY include an `r`, `p`, `e` or `a` tag linking to a URL, profile, note, or parameterized replaceable event.
The `content` MAY include emoji(s), or [NIP-30](30.md) custom emoji(s). If the `content` is an empty string then the client should clear the status.
# Client behavior # Client behavior
Clients MAY display this next to the username on posts or profiles to provide live user status information. Clients MAY display this next to the username on posts or profiles to provide live user status information.
@ -57,5 +59,3 @@ Clients MAY display this next to the username on posts or profiles to provide li
* Nostr music streaming services that update your music status when you're listening * Nostr music streaming services that update your music status when you're listening
* Podcasting apps that update your music status when you're listening to a podcast, with a link for others to listen as well * Podcasting apps that update your music status when you're listening to a podcast, with a link for others to listen as well
* Clients can use the system media player to update playing music status * Clients can use the system media player to update playing music status
The `content` MAY include emoji(s), or [NIP-30](30.md) custom emoji(s). If the `content` is an empty string then the client should clear the status.

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@ -26,6 +26,8 @@ Relays SHOULD interpret the query to the best of their ability and return events
Relays SHOULD perform matching against `content` event field, and MAY perform Relays SHOULD perform matching against `content` event field, and MAY perform
matching against other fields if that makes sense in the context of a specific kind. matching against other fields if that makes sense in the context of a specific kind.
Results SHOULD be returned in descending order by quality of search result (as defined by the implementation),
not by the usual `.created_at`. The `limit` filter SHOULD be applied after sorting by matching score.
A query string may contain `key:value` pairs (two words separated by colon), these are extensions, relays SHOULD ignore A query string may contain `key:value` pairs (two words separated by colon), these are extensions, relays SHOULD ignore
extensions they don't support. extensions they don't support.

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@ -77,7 +77,7 @@ Event `kind:1311` is live chat's channel message. Clients MUST include the `a` t
## Use Cases ## Use Cases
Common use cases include meeting rooms/workshops, watch-together activities, or event spaces, such as [live.snort.social](https://live.snort.social) and [nostrnests.com](https://nostrnests.com). Common use cases include meeting rooms/workshops, watch-together activities, or event spaces, such as [zap.stream](https://zap.stream).
## Example ## Example

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@ -36,6 +36,11 @@ The content should be Markdown, following the same rules as of [NIP-23](23.md),
One extra functionality is added: **wikilinks**. Unlike normal Markdown links `[]()` that link to webpages, wikilinks `[[]]` link to other articles in the wiki. In this case, the wiki is the entirety of Nostr. Clicking on a wikilink should cause the client to ask relays for events with `d` tags equal to the target of that wikilink. One extra functionality is added: **wikilinks**. Unlike normal Markdown links `[]()` that link to webpages, wikilinks `[[]]` link to other articles in the wiki. In this case, the wiki is the entirety of Nostr. Clicking on a wikilink should cause the client to ask relays for events with `d` tags equal to the target of that wikilink.
Wikilinks can take these two forms:
1. `[[Target Page]]` -- in this case it will link to the page `target-page` (according to `d` tag normalization rules above) and be displayed as `Target Page`;
2. `[[target page|see this]]` -- in this case it will link to the page `target-page`, but will be displayed as `see this`.
### Merge Requests ### Merge Requests
Event `kind:818` represents a request to merge from a forked article into the source. It is directed to a pubkey and references the original article and the modified event. Event `kind:818` represents a request to merge from a forked article into the source. It is directed to a pubkey and references the original article and the modified event.

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@ -0,0 +1,538 @@
# NIP-55
## Android Signer Application
`draft` `optional`
This NIP describes a method for 2-way communication between an Android signer and any Nostr client on Android. The Android signer is an Android Application and the client can be a web client or an Android application.
# Usage for Android applications
The Android signer uses Intents and Content Resolvers to communicate between applications.
To be able to use the Android signer in your application you should add this to your AndroidManifest.xml:
```xml
<queries>
<intent>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="nostrsigner" />
</intent>
</queries>
```
Then you can use this function to check if there's a signer application installed:
```kotlin
fun isExternalSignerInstalled(context: Context): Boolean {
val intent =
Intent().apply {
action = Intent.ACTION_VIEW
data = Uri.parse("nostrsigner:")
}
val infos = context.packageManager.queryIntentActivities(intent, 0)
return infos.size > 0
}
```
## Using Intents
To get the result back from the Signer Application you should use `registerForActivityResult` or `rememberLauncherForActivityResult` in Kotlin. If you are using another framework check the documentation of your framework or a third party library to get the result.
```kotlin
val launcher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.StartActivityForResult(),
onResult = { result ->
if (result.resultCode != Activity.RESULT_OK) {
Toast.makeText(
context,
"Sign request rejected",
Toast.LENGTH_SHORT
).show()
} else {
val signature = activityResult.data?.getStringExtra("signature")
// Do something with signature ...
}
}
)
```
Create the Intent using the **nostrsigner** scheme:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$content"))
```
Set the Signer package name:
```kotlin
intent.`package` = "com.example.signer"
```
Send the Intent:
```kotlin
launcher.launch(intent)
```
### Methods
- **get_public_key**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "get_public_key")
// You can send some default permissions for the user to authorize for ever
val permissions = listOf(
Permission(
type = "sign_event",
kind = 22242
),
Permission(
type = "nip44_decrypt"
)
)
intent.putExtra("permissions", permissions.toJson())
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **npub** in the signature field
```kotlin
val npub = intent.data?.getStringExtra("signature")
// The package name of the signer application
val packageName = intent.data?.getStringExtra("package")
```
- **sign_event**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$eventJson"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "sign_event")
// To handle results when not waiting between intents
intent.putExtra("id", event.id)
// Send the current logged in user npub
intent.putExtra("current_user", npub)
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **signature**, **id** and **event** fields
```kotlin
val signature = intent.data?.getStringExtra("signature")
// The id you sent
val id = intent.data?.getStringExtra("id")
val signedEventJson = intent.data?.getStringExtra("event")
```
- **nip04_encrypt**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$plaintext"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "nip04_encrypt")
// to control the result in your application in case you are not waiting the result before sending another intent
intent.putExtra("id", "some_id")
// Send the current logged in user npub
intent.putExtra("current_user", account.keyPair.pubKey.toNpub())
// Send the hex pubKey that will be used for encrypting the data
intent.putExtra("pubKey", pubKey)
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **signature** and **id** fields
```kotlin
val encryptedText = intent.data?.getStringExtra("signature")
// the id you sent
val id = intent.data?.getStringExtra("id")
```
- **nip44_encrypt**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$plaintext"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "nip44_encrypt")
// to control the result in your application in case you are not waiting the result before sending another intent
intent.putExtra("id", "some_id")
// Send the current logged in user npub
intent.putExtra("current_user", account.keyPair.pubKey.toNpub())
// Send the hex pubKey that will be used for encrypting the data
intent.putExtra("pubKey", pubKey)
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **signature** and **id** fields
```kotlin
val encryptedText = intent.data?.getStringExtra("signature")
// the id you sent
val id = intent.data?.getStringExtra("id")
```
- **nip04_decrypt**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$encryptedText"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "nip04_decrypt")
// to control the result in your application in case you are not waiting the result before sending another intent
intent.putExtra("id", "some_id")
// Send the current logged in user npub
intent.putExtra("current_user", account.keyPair.pubKey.toNpub())
// Send the hex pubKey that will be used for decrypting the data
intent.putExtra("pubKey", pubKey)
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **signature** and **id** fields
```kotlin
val plainText = intent.data?.getStringExtra("signature")
// the id you sent
val id = intent.data?.getStringExtra("id")
```
- **nip44_decrypt**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$encryptedText"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "nip04_decrypt")
// to control the result in your application in case you are not waiting the result before sending another intent
intent.putExtra("id", "some_id")
// Send the current logged in user npub
intent.putExtra("current_user", account.keyPair.pubKey.toNpub())
// Send the hex pubKey that will be used for decrypting the data
intent.putExtra("pubKey", pubKey)
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **signature** and **id** fields
```kotlin
val plainText = intent.data?.getStringExtra("signature")
// the id you sent
val id = intent.data?.getStringExtra("id")
```
- **decrypt_zap_event**
- params:
```kotlin
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("nostrsigner:$eventJson"))
intent.`package` = "com.example.signer"
intent.putExtra("type", "decrypt_zap_event")
// to control the result in your application in case you are not waiting the result before sending another intent
intent.putExtra("id", "some_id")
// Send the current logged in user npub
intent.putExtra("current_user", account.keyPair.pubKey.toNpub())
context.startActivity(intent)
```
- result:
- If the user approved intent it will return the **signature** and **id** fields
```kotlin
val eventJson = intent.data?.getStringExtra("signature")
// the id you sent
val id = intent.data?.getStringExtra("id")
```
## Using Content Resolver
To get the result back from Signer Application you should use contentResolver.query in Kotlin. If you are using another framework check the documentation of your framework or a third party library to get the result.
If the user did not check the "remember my choice" option, the npub is not in Signer Application or the signer type is not recognized the `contentResolver` will return null
For the SIGN_EVENT type Signer Application returns two columns "signature" and "event". The column event is the signed event json
For the other types Signer Application returns the column "signature"
If the user chose to always reject the event, signer application will return the column "rejected" and you should not open signer application
### Methods
- **get_public_key**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.GET_PUBLIC_KEY"),
listOf("login"),
null,
null,
null
)
```
- result:
- Will return the **npub** in the signature column
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
if (index < 0) return
val npub = it.getString(index)
}
```
- **sign_event**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.SIGN_EVENT"),
listOf("$eventJson", "", "${logged_in_user_npub}"),
null,
null,
null
)
```
- result:
- Will return the **signature** and the **event** columns
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
val indexJson = it.getColumnIndex("event")
val signature = it.getString(index)
val eventJson = it.getString(indexJson)
}
```
- **nip04_encrypt**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.NIP04_ENCRYPT"),
listOf("$plainText", "${hex_pub_key}", "${logged_in_user_npub}"),
null,
null,
null
)
```
- result:
- Will return the **signature** column
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
val encryptedText = it.getString(index)
}
```
- **nip44_encrypt**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.NIP44_ENCRYPT"),
listOf("$plainText", "${hex_pub_key}", "${logged_in_user_npub}"),
null,
null,
null
)
```
- result:
- Will return the **signature** column
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
val encryptedText = it.getString(index)
}
```
- **nip04_decrypt**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.NIP04_DECRYPT"),
listOf("$encryptedText", "${hex_pub_key}", "${logged_in_user_npub}"),
null,
null,
null
)
```
- result:
- Will return the **signature** column
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
val encryptedText = it.getString(index)
}
```
- **nip44_decrypt**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.NIP44_DECRYPT"),
listOf("$encryptedText", "${hex_pub_key}", "${logged_in_user_npub}"),
null,
null,
null
)
```
- result:
- Will return the **signature** column
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
val encryptedText = it.getString(index)
}
```
- **decrypt_zap_event**
- params:
```kotlin
val result = context.contentResolver.query(
Uri.parse("content://com.example.signer.DECRYPT_ZAP_EVENT"),
listOf("$eventJson", "", "${logged_in_user_npub}"),
null,
null,
null
)
```
- result:
- Will return the **signature** column
```kotlin
if (result == null) return
if (result.moveToFirst()) {
val index = it.getColumnIndex("signature")
val eventJson = it.getString(index)
}
```
# Usage for Web Applications
Since web applications can't receive a result from the intent, you should add a modal to paste the signature or the event json or create a callback url.
If you send the callback url parameter, Signer Application will send the result to the url.
If you don't send a callback url, Signer Application will copy the result to the clipboard.
You can configure the `returnType` to be **signature** or **event**.
Android intents and browser urls have limitations, so if you are using the `returnType` of **event** consider using the parameter **compressionType=gzip** that will return "Signer1" + Base64 gzip encoded event json
## Methods
- **get_public_key**
- params:
```js
window.href = `nostrsigner:?compressionType=none&returnType=signature&type=get_public_key&callbackUrl=https://example.com/?event=`;
```
- **sign_event**
- params:
```js
window.href = `nostrsigner:${eventJson}?compressionType=none&returnType=signature&type=sign_event&callbackUrl=https://example.com/?event=`;
```
- **nip04_encrypt**
- params:
```js
window.href = `nostrsigner:${plainText}?pubKey=${hex_pub_key}&compressionType=none&returnType=signature&type=nip04_encrypt&callbackUrl=https://example.com/?event=`;
```
- **nip44_encrypt**
- params:
```js
window.href = `nostrsigner:${plainText}?pubKey=${hex_pub_key}&compressionType=none&returnType=signature&type=nip44_encrypt&callbackUrl=https://example.com/?event=`;
```
- **nip04_decrypt**
- params:
```js
window.href = `nostrsigner:${encryptedText}?pubKey=${hex_pub_key}&compressionType=none&returnType=signature&type=nip04_decrypt&callbackUrl=https://example.com/?event=`;
```
- **nip44_decrypt**
- params:
```js
window.href = `nostrsigner:${encryptedText}?pubKey=${hex_pub_key}&compressionType=none&returnType=signature&type=nip44_decrypt&callbackUrl=https://example.com/?event=`;
```
- **decrypt_zap_event**
- params:
```js
window.href = `nostrsigner:${eventJson}?compressionType=none&returnType=signature&type=decrypt_zap_event&callbackUrl=https://example.com/?event=`;
```
## Example
```js
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>Test</h1>
<script>
window.onload = function() {
var url = new URL(window.location.href);
var params = url.searchParams;
if (params) {
var param1 = params.get("event");
if (param1) alert(param1)
}
let json = {
kind: 1,
content: "test"
}
let encodedJson = encodeURIComponent(JSON.stringify(json))
var newAnchor = document.createElement("a");
newAnchor.href = `nostrsigner:${encodedJson}?compressionType=none&returnType=signature&type=sign_event&callbackUrl=https://example.com/?event=`;
newAnchor.textContent = "Open External Signer";
document.body.appendChild(newAnchor)
}
</script>
</body>
</html>
```

2
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@ -131,7 +131,7 @@ The following should be true of the `zap receipt` event:
- The `created_at` date SHOULD be set to the invoice `paid_at` date for idempotency. - The `created_at` date SHOULD be set to the invoice `paid_at` date for idempotency.
- `tags` MUST include the `p` tag (zap recipient) AND optional `e` tag from the `zap request` AND optional `a` tag from the `zap request` AND optional `P` tag from the pubkey of the zap request (zap sender). - `tags` MUST include the `p` tag (zap recipient) AND optional `e` tag from the `zap request` AND optional `a` tag from the `zap request` AND optional `P` tag from the pubkey of the zap request (zap sender).
- The `zap receipt` MUST have a `bolt11` tag containing the description hash bolt11 invoice. - The `zap receipt` MUST have a `bolt11` tag containing the description hash bolt11 invoice.
- The `zap receipt` MUST contain a `description` tag which is the JSON-encoded invoice description. - The `zap receipt` MUST contain a `description` tag which is the JSON-encoded zap request.
- `SHA256(description)` MUST match the description hash in the bolt11 invoice. - `SHA256(description)` MUST match the description hash in the bolt11 invoice.
- The `zap receipt` MAY contain a `preimage` tag to match against the payment hash of the bolt11 invoice. This isn't really a payment proof, there is no real way to prove that the invoice is real or has been paid. You are trusting the author of the `zap receipt` for the legitimacy of the payment. - The `zap receipt` MAY contain a `preimage` tag to match against the payment hash of the bolt11 invoice. This isn't really a payment proof, there is no real way to prove that the invoice is real or has been paid. You are trusting the author of the `zap receipt` for the legitimacy of the payment.

118
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@ -0,0 +1,118 @@
NIP-71
======
Video Events
---------------
`draft` `optional`
This specification defines video events representing a dedicated post of externally hosted content. These video events are _parameterized replaceable_ and deletable per [NIP-09](09.md).
Unlike a `kind 1` event with a video attached, Video Events are meant to contain all additional metadata concerning the subject media and to be surfaced in video-specific clients rather than general micro-blogging clients. The thought is for events of this kind to be referenced in a Netflix, YouTube, or TikTok like nostr client where the video itself is at the center of the experience.
## Video Events
There are two types of video events represented by different kinds: horizontal and vertical video events. This is meant to allow clients to cater to each as the viewing experience for horizontal (landscape) videos is often different than that of vertical (portrait) videos (Stories, Reels, Shorts, etc).
#### Format
The format uses a parameterized replaceable event kind `34235` for horizontal videos and `34236` for vertical videos.
The `.content` of these events is a summary or description on the video content.
The list of tags are as follows:
* `d` (required) universally unique identifier (UUID). Generated by the client creating the video event.
* `url` (required) the url to the video file
* `m` a string indicating the data type of the file. The [MIME types](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types) format must be used, and they should be lowercase.
* `title` (required) title of the video
* `"published_at"`, for the timestamp in unix seconds (stringified) of the first time the video was published
* `x` containing the SHA-256 hexencoded string of the file.
* `size` (optional) size of file in bytes
* `dim` (optional) size of file in pixels in the form `<width>x<height>`
* `duration` (optional) video duration in seconds
* `magnet` (optional) URI to magnet file
* `i` (optional) torrent infohash
* `text-track` (optional, repeated) link to WebVTT file for video, type of supplementary information (captions/subtitles/chapters/metadata), optional language code
* `thumb` (optional) url of thumbnail with same aspect ratio
* `image` (optional) url of preview image with same dimensions
* `content-warning` (optional) warning about content of NSFW video
* `alt` (optional) description for accessibility
* `segment` (optional, repeated) start timestamp in format `HH:MM:SS.sss`, end timestamp in format `HH:MM:SS.sss`, chapter/segment title, chapter thumbnail-url
* `t` (optional, repeated) hashtag to categorize video
* `p` (optional, repeated) 32-bytes hex pubkey of a participant in the video, optional recommended relay URL
* `r` (optional, repeated) references / links to web pages
```json
{
"id": <32-bytes lowercase hex-encoded SHA-256 of the the serialized event data>,
"pubkey": <32-bytes lowercase hex-encoded public key of the event creator>,
"created_at": <Unix timestamp in seconds>,
"kind": 34235 | 34236,
"content": "<summary / description of video>",
"tags": [
["d", "<UUID>"],
["title", "<title of video>"],
["thumb", "<thumbnail image for video>"],
["published_at", "<unix timestamp>"],
["alt", <description>],
// Video Data
["url",<string with URI of file>],
["m", <MIME type>],
["x",<Hash SHA-256>],
["size", <size of file in bytes>],
["duration", <duration of video in seconds>],
["dim", <size of file in pixels>],
["magnet",<magnet URI> ],
["i",<torrent infohash>],
["text-track", "<encoded `kind 6000` event>", "<recommended relay urls>"],
["content-warning", "<reason>"],
["segment", <start>, <end>, "<title>", "<thumbnail URL>"],
// Participants
["p", "<32-bytes hex of a pubkey>", "<optional recommended relay URL>"],
["p", "<32-bytes hex of a pubkey>", "<optional recommended relay URL>"],
// Hashtags
["t", "<tag>"],
["t", "<tag>"],
// Reference links
["r", "<url>"],
["r", "<url>"]
]
}
```
## Video View
A video event view is a response to a video event to track a user's view or progress viewing the video.
### Format
The format uses a parameterized replaceable event kind `34237`.
The `.content` of these events is optional and could be a free-form note that acts like a bookmark for the user.
The list of tags are as follows:
* `a` (required) reference tag to kind `34235` or `34236` video event being viewed
* `d` (required) same as `a` reference tag value
* `viewed` (optional, repeated) timestamp of the user's start time in seconds, timestamp of the user's end time in seconds
```json
{
"id": <32-bytes lowercase hex-encoded SHA-256 of the the serialized event data>,
"pubkey": <32-bytes lowercase hex-encoded public key of the event creator>,
"created_at": <Unix timestamp in seconds>,
"kind": 34237,
"content": "<note>",
"tags": [
["a", "<34235 | 34236>:<video event author pubkey>:<d-identifier of video event>", "<optional relay url>"],
["e", "<event-id", "<relay-url>"]
["d", "<34235 | 34236>:<video event author pubkey>:<d-identifier of video event>"],
["viewed", <start>, <end>],
]
}
```

126
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@ -1,8 +1,6 @@
NIP-96 # NIP-96
======
HTTP File Storage Integration ## HTTP File Storage Integration
-----------------------------
`draft` `optional` `draft` `optional`
@ -84,46 +82,46 @@ it must use the "api_url" field instead.
See https://github.com/aljazceru/awesome-nostr#nip-96-file-storage-servers. See https://github.com/aljazceru/awesome-nostr#nip-96-file-storage-servers.
## Auth
When indicated, `clients` must add an [NIP-98](98.md) `Authorization` header (**optionally** with the encoded `payload` tag set to the base64-encoded 256-bit SHA-256 hash of the file - not the hash of the whole request body).
## Upload ## Upload
A file can be uploaded one at a time to `https://your-file-server.example/custom-api-path` (route from `https://your-file-server.example/.well-known/nostr/nip96.json` "api_url" field) as `multipart/form-data` content type using `POST` method with the file object set to the `file` form data field. `POST $api_url` as `multipart/form-data`.
`Clients` must add an [NIP-98](98.md) `Authorization` header (**optionally** with the encoded `payload` tag set to the base64-encoded 256-bit SHA-256 hash of the file - not the hash of the whole request body). **AUTH required**
If using an html form, use an `Authorization` form data field instead.
These following **optional** form data fields MAY be used by `servers` and SHOULD be sent by `clients`: List of form fields:
- `expiration`: string of the UNIX timestamp in seconds. Empty string if file should be stored forever. The server isn't required to honor this;
- `size`: string of the file byte size. This is just a value the server can use to reject early if the file size exceeds the server limits; - `file`: **REQUIRED** the file to upload
- `alt`: (recommended) strict description text for visibility-impaired users; - `caption`: **RECOMMENDED** loose description;
- `caption`: loose description; - `expiration`: UNIX timestamp in seconds. Empty string if file should be stored forever. The server isn't required to honor this.
- `media_type`: "avatar" or "banner". Informs the server if the file will be used as an avatar or banner. If absent, the server will interpret it as a normal upload, without special treatment; - `size`: File byte size. This is just a value the server can use to reject early if the file size exceeds the server limits.
- `alt`: **RECOMMENDED** strict description text for visibility-impaired users.
- `media_type`: "avatar" or "banner". Informs the server if the file will be used as an avatar or banner. If absent, the server will interpret it as a normal upload, without special treatment.
- `content_type`: mime type such as "image/jpeg". This is just a value the server can use to reject early if the mime type isn't supported. - `content_type`: mime type such as "image/jpeg". This is just a value the server can use to reject early if the mime type isn't supported.
- `no_transform`: "true" asks server not to transform the file and serve the uploaded file as is, may be rejected.
Others custom form data fields may be used depending on specific `server` support. Others custom form data fields may be used depending on specific `server` support.
The `server` isn't required to store any metadata sent by `clients`. The `server` isn't required to store any metadata sent by `clients`.
Note for `clients`: if using an HTML form, it is important for the `file` form field to be the **last** one, or be re-ordered right before sending or be appended as the last field of XHR2's FormData object.
The `filename` embedded in the file may not be honored by the `server`, which could internally store just the SHA-256 hash value as the file name, ignoring extra metadata. The `filename` embedded in the file may not be honored by the `server`, which could internally store just the SHA-256 hash value as the file name, ignoring extra metadata.
The hash is enough to uniquely identify a file, that's why it will be used on the "download" and "delete" routes. The hash is enough to uniquely identify a file, that's why it will be used on the `download` and `delete` routes.
The `server` MUST link the user's `pubkey` string (which is embedded in the decoded header value) as the owner of the file so to later allow them to delete the file. The `server` MUST link the user's `pubkey` string as the owner of the file so to later allow them to delete the file.
Note that if a file with the same hash of a previously received file (so the same file) is uploaded by another user, the server doesn't need to store the new file.
It should just add the new user's `pubkey` to the list of the owners of the already stored file with said hash (if it wants to save space by keeping just one copy of the same file, because multiple uploads of the same file results in the same file hash).
The `server` MAY also store the `Authorization` header/field value (decoded or not) for accountability purpose as this proves that the user with the unique pubkey did ask for the upload of the file with a specific hash. However, storing the pubkey is sufficient to establish ownership. `no_transform` can be used to replicate a file to multiple servers for redundancy, clients can use the [server list](#selecting-a-server) to find alternative servers which might contain the same file. When uploading a file and requesting `no_transform` clients should check that the hash matches in the response in order to detect if the file was modified.
The `server` MUST reject with 413 Payload Too Large if file size exceeds limits. ### Response codes
The `server` MUST reject with 400 Bad Request status if some fields are invalid. - `200 OK`: File upload exists, but is successful (Existing hash)
- `201 Created`: File upload successful (New hash)
The `server` MUST reply to the upload with 200 OK status if the `payload` tag value contains an already used SHA-256 hash (if file is already owned by the same pubkey) or reject the upload with 403 Forbidden status if it isn't the same of the received file. - `202 Accepted`: File upload is awaiting processing, see [Delayed Processing](#delayed-processing) section
- `413 Payload Too Large`: File size exceeds limit
The `server` MAY reject the upload with 402 Payment Required status if the user has a pending payment (Payment flow is not strictly required. Server owners decide if the storage is free or not. Monetization schemes may be added later to correlated NIPs.). - `400 Bad Request`: Form data is invalid or not supported.
- `403 Forbidden`: User is not allowed to upload or the uploaded file hash didnt match the hash included in the `Authorization` header `payload` tag.
On successful uploads the `server` MUST reply with **201 Created** HTTP status code or **202 Accepted** if a `processing_url` field is added - `402 Payment Required`: Payment is required by the server, **this flow is undefined**.
to the response so that the `client` can follow the processing status (see [Delayed Processing](#delayed-processing) section).
The upload response is a json object as follows: The upload response is a json object as follows:
@ -179,11 +177,13 @@ The upload response is a json object as follows:
Note that if the server didn't apply any transformation to the received file, both `nip94_event.tags.*.ox` and `nip94_event.tags.*.x` fields will have the same value. The server MUST link the saved file to the SHA-256 hash of the **original** file before any server transformations (the `nip94_event.tags.*.ox` tag value). The **original** file's SHA-256 hash will be used to identify the saved file when downloading or deleting it. Note that if the server didn't apply any transformation to the received file, both `nip94_event.tags.*.ox` and `nip94_event.tags.*.x` fields will have the same value. The server MUST link the saved file to the SHA-256 hash of the **original** file before any server transformations (the `nip94_event.tags.*.ox` tag value). The **original** file's SHA-256 hash will be used to identify the saved file when downloading or deleting it.
`Clients` may upload the same file to one or many `servers`. `clients` may upload the same file to one or many `servers`.
After successful upload, the `client` may optionally generate and send to any set of nostr `relays` a [NIP-94](94.md) event by including the missing fields. After successful upload, the `client` may optionally generate and send to any set of nostr `relays` a [NIP-94](94.md) event by including the missing fields.
Alternatively, instead of using NIP-94, the `client` can share or embed on a nostr note just the above url. Alternatively, instead of using NIP-94, the `client` can share or embed on a nostr note just the above url.
`clients` may also use the tags from the `nip94_event` to construct an `imeta` tag
### Delayed Processing ### Delayed Processing
Sometimes the server may want to place the uploaded file in a processing queue for deferred file processing. Sometimes the server may want to place the uploaded file in a processing queue for deferred file processing.
@ -219,7 +219,7 @@ However, for all file actions, such as download and deletion, the **original** f
## Download ## Download
`Servers` must make available the route `https://your-file-server.example/custom-api-path/<sha256-file-hash>(.ext)` (route taken from `https://your-file-server.example/.well-known/nostr/nip96.json` "api_url" or "download_url" field) with `GET` method for file download. `GET $api_url/<sha256-hash>(.ext)`
The primary file download url informed at the upload's response field `nip94_event.tags.*.url` The primary file download url informed at the upload's response field `nip94_event.tags.*.url`
can be that or not (it can be any non-standard url the server wants). can be that or not (it can be any non-standard url the server wants).
@ -227,17 +227,17 @@ If not, the server still MUST also respond to downloads at the standard url
mentioned on the previous paragraph, to make it possible for a client mentioned on the previous paragraph, to make it possible for a client
to try downloading a file on any NIP-96 compatible server by knowing just the SHA-256 file hash. to try downloading a file on any NIP-96 compatible server by knowing just the SHA-256 file hash.
Note that the "\<sha256-file-hash\>" part is from the **original** file, **not** from the **transformed** file if the uploaded file went through any server transformation. Note that the "\<sha256-hash\>" part is from the **original** file, **not** from the **transformed** file if the uploaded file went through any server transformation.
Supporting ".ext", meaning "file extension", is required for `servers`. It is optional, although recommended, for `clients` to append it to the path. Supporting ".ext", meaning "file extension", is required for `servers`. It is optional, although recommended, for `clients` to append it to the path.
When present it may be used by `servers` to know which `Content-Type` header to send (e.g.: "Content-Type": "image/png" for ".png" extension). When present it may be used by `servers` to know which `Content-Type` header to send (e.g.: "Content-Type": "image/png" for ".png" extension).
The file extension may be absent because the hash is the only needed string to uniquely identify a file. The file extension may be absent because the hash is the only needed string to uniquely identify a file.
Example: `https://your-file-server.example/custom-api-path/719171db19525d9d08dd69cb716a18158a249b7b3b3ec4bbdec5698dca104b7b.png` Example: `$api_url/719171db19525d9d08dd69cb716a18158a249b7b3b3ec4bbdec5698dca104b7b.png`
### Media Transformations ### Media Transformations
`Servers` may respond to some media transformation query parameters and ignore those they don't support by serving `servers` may respond to some media transformation query parameters and ignore those they don't support by serving
the original media file without transformations. the original media file without transformations.
#### Image Transformations #### Image Transformations
@ -245,23 +245,23 @@ the original media file without transformations.
##### Resizing ##### Resizing
Upon upload, `servers` may create resized image variants, such as thumbnails, respecting the original aspect ratio. Upon upload, `servers` may create resized image variants, such as thumbnails, respecting the original aspect ratio.
`Clients` may use the `w` query parameter to request an image version with the desired pixel width. `clients` may use the `w` query parameter to request an image version with the desired pixel width.
`Servers` can then serve the variant with the closest width to the parameter value `servers` can then serve the variant with the closest width to the parameter value
or an image variant generated on the fly. or an image variant generated on the fly.
Example: `https://your-file-server.example/custom-api-path/<sha256-file-hash>.png?w=32` Example: `$api_url/<sha256-hash>.png?w=32`
## Deletion ## Deletion
`Servers` must make available the route `https://deletion.domain/deletion-path/<sha256-file-hash>(.ext)` (route taken from `https://your-file-server.example/.well-known/nostr/nip96.json` "api_url" field) with `DELETE` method for file deletion. `DELETE $api_url/<sha256-hash>(.ext)`
Note that the "\<sha256-file-hash\>" part is from the **original** file, **not** from the **transformed** file if the uploaded file went through any server transformation. **AUTH required**
Note that the `/<sha256-hash>` part is from the **original** file, **not** from the **transformed** file if the uploaded file went through any server transformation.
The extension is optional as the file hash is the only needed file identification. The extension is optional as the file hash is the only needed file identification.
`Clients` should send a `DELETE` request to the server deletion route in the above format. It must include a NIP-98 `Authorization` header. The `server` should reject deletes from users other than the original uploader with the appropriate http response code (403 Forbidden).
The `server` should reject deletes from users other than the original uploader. The `pubkey` encoded on the header value identifies the user.
It should be noted that more than one user may have uploaded the same file (with the same hash). In this case, a delete must not really delete the file but just remove the user's `pubkey` from the file owners list (considering the server keeps just one copy of the same file, because multiple uploads of the same file results It should be noted that more than one user may have uploaded the same file (with the same hash). In this case, a delete must not really delete the file but just remove the user's `pubkey` from the file owners list (considering the server keeps just one copy of the same file, because multiple uploads of the same file results
in the same file hash). in the same file hash).
@ -275,6 +275,46 @@ The successful response is a 200 OK one with just basic JSON fields:
} }
``` ```
## Listing files
`GET $api_url?page=x&count=y`
**AUTH required**
Returns a list of files linked to the authenticated users pubkey.
Example Response:
```js
{
"count": 1, // server page size, eg. max(1, min(server_max_page_size, arg_count))
"total": 1, // total number of files
"page": 0, // the current page number
"files": [
{
"tags": [
["ox": "719171db19525d9d08dd69cb716a18158a249b7b3b3ec4bbdec5698dca104b7b"],
["x": "5d2899290e0e69bcd809949ee516a4a1597205390878f780c098707a7f18e3df"],
["size", "123456"],
["alt", "a meme that makes you laugh"],
["expiration", "1715691139"],
// ...other metadata
]
"content": "haha funny meme", // caption
"created_at": 1715691130 // upload timestmap
},
...
]
}
```
`files` contains an array of NIP-94 events
### Query args
- `page` page number (`offset=page*count`)
- `count` number of items per page
## Selecting a Server ## Selecting a Server
Note: HTTP File Storage Server developers may skip this section. This is meant for client developers. Note: HTTP File Storage Server developers may skip this section. This is meant for client developers.

12
BREAKING.md
View File

@ -5,6 +5,10 @@ reverse chronological order.
| Date | Commit | NIP | Change | | Date | Commit | NIP | Change |
| ----------- | --------- | -------- | ------ | | ----------- | --------- | -------- | ------ |
| 2024-06-06 | [58e94b20](https://github.com/nostr-protocol/nips/commit/58e94b20) | [NIP-25](25.md) | [8073c848](https://github.com/nostr-protocol/nips/commit/8073c848) was reverted |
| 2024-06-06 | [a6dfc7b5](https://github.com/nostr-protocol/nips/commit/a6dfc7b5) | [NIP-55](55.md) | NIP number was changed |
| 2024-05-25 | [5d1d1c17](https://github.com/nostr-protocol/nips/commit/5d1d1c17) | [NIP-71](71.md) | 'aes-256-gcm' tag was removed |
| 2024-05-07 | [8073c848](https://github.com/nostr-protocol/nips/commit/8073c848) | [NIP-25](25.md) | e-tags were changed to not include entire thread |
| 2024-04-30 | [bad88262](https://github.com/nostr-protocol/nips/commit/bad88262) | [NIP-34](34.md) | 'earliest-unique-commit' tag was removed (use 'r' tag instead) | | 2024-04-30 | [bad88262](https://github.com/nostr-protocol/nips/commit/bad88262) | [NIP-34](34.md) | 'earliest-unique-commit' tag was removed (use 'r' tag instead) |
| 2024-02-25 | [4a171cb0](https://github.com/nostr-protocol/nips/commit/4a171cb0) | [NIP-18](18.md) | quote repost should use `q` tag | | 2024-02-25 | [4a171cb0](https://github.com/nostr-protocol/nips/commit/4a171cb0) | [NIP-18](18.md) | quote repost should use `q` tag |
| 2024-02-21 | [c6cd655c](https://github.com/nostr-protocol/nips/commit/c6cd655c) | [NIP-46](46.md) | Params were stringified | | 2024-02-21 | [c6cd655c](https://github.com/nostr-protocol/nips/commit/c6cd655c) | [NIP-46](46.md) | Params were stringified |
@ -19,8 +23,9 @@ reverse chronological order.
| 2023-12-27 | [17c67ef5](https://github.com/nostr-protocol/nips/commit/17c67ef5) | [NIP-94](94.md) | 'aes-256-gcm' tag was removed | | 2023-12-27 | [17c67ef5](https://github.com/nostr-protocol/nips/commit/17c67ef5) | [NIP-94](94.md) | 'aes-256-gcm' tag was removed |
| 2023-12-03 | [0ba45895](https://github.com/nostr-protocol/nips/commit/0ba45895) | [NIP-01](01.md) | WebSocket status code `4000` was replaced by 'CLOSED' message | | 2023-12-03 | [0ba45895](https://github.com/nostr-protocol/nips/commit/0ba45895) | [NIP-01](01.md) | WebSocket status code `4000` was replaced by 'CLOSED' message |
| 2023-11-28 | [6de35f9e](https://github.com/nostr-protocol/nips/commit/6de35f9e) | [NIP-89](89.md) | 'client' tag value was changed | | 2023-11-28 | [6de35f9e](https://github.com/nostr-protocol/nips/commit/6de35f9e) | [NIP-89](89.md) | 'client' tag value was changed |
| 2023-11-20 | [7822a8b1](https://github.com/nostr-protocol/nips/commit/7822a8b1) | [NIP-51](51.md) | `kind: 30000` and `kind: 30001` were deprecated | | 2023-11-20 | [7822a8b1](https://github.com/nostr-protocol/nips/commit/7822a8b1) | [NIP-51](51.md) | `kind: 30000` and `kind: 30001` were deprecated |
| 2023-11-11 | [cbdca1e9](https://github.com/nostr-protocol/nips/commit/cbdca1e9) | [NIP-84](84.md) | 'range' tag was removed | | 2023-11-11 | [cbdca1e9](https://github.com/nostr-protocol/nips/commit/cbdca1e9) | [NIP-84](84.md) | 'range' tag was removed |
| 2023-11-10 | [c945d8bd](https://github.com/nostr-protocol/nips/commit/c945d8bd) | [NIP-32](32.md) | 'l' tag annotations was removed |
| 2023-11-07 | [108b7f16](https://github.com/nostr-protocol/nips/commit/108b7f16) | [NIP-01](01.md) | 'OK' message must have 4 items | | 2023-11-07 | [108b7f16](https://github.com/nostr-protocol/nips/commit/108b7f16) | [NIP-01](01.md) | 'OK' message must have 4 items |
| 2023-10-17 | [cf672b76](https://github.com/nostr-protocol/nips/commit/cf672b76) | [NIP-03](03.md) | 'block' tag was removed | | 2023-10-17 | [cf672b76](https://github.com/nostr-protocol/nips/commit/cf672b76) | [NIP-03](03.md) | 'block' tag was removed |
| 2023-09-29 | [7dc6385f](https://github.com/nostr-protocol/nips/commit/7dc6385f) | [NIP-57](57.md) | optional 'a' tag was included in `zap receipt` | | 2023-09-29 | [7dc6385f](https://github.com/nostr-protocol/nips/commit/7dc6385f) | [NIP-57](57.md) | optional 'a' tag was included in `zap receipt` |
@ -33,10 +38,10 @@ reverse chronological order.
| 2023-08-14 | [72bb8a12](https://github.com/nostr-protocol/nips/commit/72bb8a12) | [NIP-33](33.md) | NIP-12, 16, 20 and 33 were merged into NIP-01 | | 2023-08-14 | [72bb8a12](https://github.com/nostr-protocol/nips/commit/72bb8a12) | [NIP-33](33.md) | NIP-12, 16, 20 and 33 were merged into NIP-01 |
| 2023-08-11 | [d87f8617](https://github.com/nostr-protocol/nips/commit/d87f8617) | [NIP-25](25.md) | empty `content` should be considered as "+" | | 2023-08-11 | [d87f8617](https://github.com/nostr-protocol/nips/commit/d87f8617) | [NIP-25](25.md) | empty `content` should be considered as "+" |
| 2023-08-01 | [5d63b157](https://github.com/nostr-protocol/nips/commit/5d63b157) | [NIP-57](57.md) | 'zap' tag was changed | | 2023-08-01 | [5d63b157](https://github.com/nostr-protocol/nips/commit/5d63b157) | [NIP-57](57.md) | 'zap' tag was changed |
| 2023-07-15 | [d1814405](https://github.com/nostr-protocol/nips/commit/d1814405) | [NIP-01](01.md) | `since` and `until` filters should be `since <= created_at <= until` | | 2023-07-15 | [d1814405](https://github.com/nostr-protocol/nips/commit/d1814405) | [NIP-01](01.md) | `since` and `until` filters should be `since <= created_at <= until` |
| 2023-07-12 | [a1cd2bd8](https://github.com/nostr-protocol/nips/commit/a1cd2bd8) | [NIP-25](25.md) | custom emoji was supported | | 2023-07-12 | [a1cd2bd8](https://github.com/nostr-protocol/nips/commit/a1cd2bd8) | [NIP-25](25.md) | custom emoji was supported |
| 2023-06-18 | [83cbd3e1](https://github.com/nostr-protocol/nips/commit/83cbd3e1) | [NIP-11](11.md) | 'image' was renamed to 'icon' | | 2023-06-18 | [83cbd3e1](https://github.com/nostr-protocol/nips/commit/83cbd3e1) | [NIP-11](11.md) | 'image' was renamed to 'icon' |
| 2023-04-13 | [bf0a0da6](https://github.com/nostr-protocol/nips/commit/bf0a0da6) | [NIP-15](15.md) | different NIP was re-added as NIP-15 | | 2023-04-13 | [bf0a0da6](https://github.com/nostr-protocol/nips/commit/bf0a0da6) | [NIP-15](15.md) | different NIP was re-added as NIP-15 |
| 2023-04-09 | [fb5b7c73](https://github.com/nostr-protocol/nips/commit/fb5b7c73) | [NIP-15](15.md) | NIP-15 was merged into NIP-01 | | 2023-04-09 | [fb5b7c73](https://github.com/nostr-protocol/nips/commit/fb5b7c73) | [NIP-15](15.md) | NIP-15 was merged into NIP-01 |
| 2023-03-15 | [e1004d3d](https://github.com/nostr-protocol/nips/commit/e1004d3d) | [NIP-19](19.md) | `1: relay` was changed to optionally | | 2023-03-15 | [e1004d3d](https://github.com/nostr-protocol/nips/commit/e1004d3d) | [NIP-19](19.md) | `1: relay` was changed to optionally |
@ -46,3 +51,4 @@ Breaking changes prior to 2023-03-01 are not yet documented.
- If it isn't clear that a change is breaking or not, we list it. - If it isn't clear that a change is breaking or not, we list it.
- The date is the date it was merged, not necessarily the date of the commit. - The date is the date it was merged, not necessarily the date of the commit.

115
README.md
View File

@ -51,6 +51,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
- [NIP-31: Dealing with Unknown Events](31.md) - [NIP-31: Dealing with Unknown Events](31.md)
- [NIP-32: Labeling](32.md) - [NIP-32: Labeling](32.md)
- [NIP-34: `git` stuff](34.md) - [NIP-34: `git` stuff](34.md)
- [NIP-35: Torrents](35.md)
- [NIP-36: Sensitive Content](36.md) - [NIP-36: Sensitive Content](36.md)
- [NIP-38: User Statuses](38.md) - [NIP-38: User Statuses](38.md)
- [NIP-39: External Identities in Profiles](39.md) - [NIP-39: External Identities in Profiles](39.md)
@ -67,11 +68,13 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
- [NIP-52: Calendar Events](52.md) - [NIP-52: Calendar Events](52.md)
- [NIP-53: Live Activities](53.md) - [NIP-53: Live Activities](53.md)
- [NIP-54: Wiki](54.md) - [NIP-54: Wiki](54.md)
- [NIP-55: Android Signer Application](55.md)
- [NIP-56: Reporting](56.md) - [NIP-56: Reporting](56.md)
- [NIP-57: Lightning Zaps](57.md) - [NIP-57: Lightning Zaps](57.md)
- [NIP-58: Badges](58.md) - [NIP-58: Badges](58.md)
- [NIP-59: Gift Wrap](59.md) - [NIP-59: Gift Wrap](59.md)
- [NIP-65: Relay List Metadata](65.md) - [NIP-65: Relay List Metadata](65.md)
- [NIP-71: Video Events](71.md)
- [NIP-72: Moderated Communities](72.md) - [NIP-72: Moderated Communities](72.md)
- [NIP-75: Zap Goals](75.md) - [NIP-75: Zap Goals](75.md)
- [NIP-78: Application-specific data](78.md) - [NIP-78: Application-specific data](78.md)
@ -122,6 +125,9 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
| `1971` | Problem Tracker | [nostrocket][nostrocket] | | `1971` | Problem Tracker | [nostrocket][nostrocket] |
| `1984` | Reporting | [56](56.md) | | `1984` | Reporting | [56](56.md) |
| `1985` | Label | [32](32.md) | | `1985` | Label | [32](32.md) |
| `2003` | Torrent | [35](35.md) |
| `2004` | Torrent Comment | [35](35.md) |
| `2022` | Coinjoin Pool | [joinstr][joinstr] |
| `4550` | Community Post Approval | [72](72.md) | | `4550` | Community Post Approval | [72](72.md) |
| `5000`-`5999` | Job Request | [90](90.md) | | `5000`-`5999` | Job Request | [90](90.md) |
| `6000`-`6999` | Job Result | [90](90.md) | | `6000`-`6999` | Job Result | [90](90.md) |
@ -156,6 +162,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
| `30002` | Relay sets | [51](51.md) | | `30002` | Relay sets | [51](51.md) |
| `30003` | Bookmark sets | [51](51.md) | | `30003` | Bookmark sets | [51](51.md) |
| `30004` | Curation sets | [51](51.md) | | `30004` | Curation sets | [51](51.md) |
| `30005` | Video sets | [51](51.md) |
| `30008` | Profile Badges | [58](58.md) | | `30008` | Profile Badges | [58](58.md) |
| `30009` | Badge Definition | [58](58.md) | | `30009` | Badge Definition | [58](58.md) |
| `30015` | Interest sets | [51](51.md) | | `30015` | Interest sets | [51](51.md) |
@ -175,17 +182,23 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
| `30617` | Repository announcements | [34](34.md) | | `30617` | Repository announcements | [34](34.md) |
| `30818` | Wiki article | [54](54.md) | | `30818` | Wiki article | [54](54.md) |
| `30819` | Redirects | [54](54.md) | | `30819` | Redirects | [54](54.md) |
| `31890` | Feed | [NUD: Custom Feeds](https://wikifreedia.xyz/cip-01/97c70a44366a6535c1) |
| `31922` | Date-Based Calendar Event | [52](52.md) | | `31922` | Date-Based Calendar Event | [52](52.md) |
| `31923` | Time-Based Calendar Event | [52](52.md) | | `31923` | Time-Based Calendar Event | [52](52.md) |
| `31924` | Calendar | [52](52.md) | | `31924` | Calendar | [52](52.md) |
| `31925` | Calendar Event RSVP | [52](52.md) | | `31925` | Calendar Event RSVP | [52](52.md) |
| `31989` | Handler recommendation | [89](89.md) | | `31989` | Handler recommendation | [89](89.md) |
| `31990` | Handler information | [89](89.md) | | `31990` | Handler information | [89](89.md) |
| `34235` | Video Event | [71](71.md) |
| `34236` | Short-form Portrait Video Event | [71](71.md) |
| `34237` | Video View Event | [71](71.md) |
| `34550` | Community Definition | [72](72.md) | | `34550` | Community Definition | [72](72.md) |
| `39000-9` | Group metadata events | [29](29.md) | | `39000-9` | Group metadata events | [29](29.md) |
[NUD: Custom Feeds]: https://wikifreedia.xyz/cip-01/97c70a44366a6535c1
[nostrocket]: https://github.com/nostrocket/NIPS/blob/main/Problems.md [nostrocket]: https://github.com/nostrocket/NIPS/blob/main/Problems.md
[lnpub]: https://github.com/shocknet/Lightning.Pub/blob/master/proto/autogenerated/client.md [lnpub]: https://github.com/shocknet/Lightning.Pub/blob/master/proto/autogenerated/client.md
[joinstr]: https://gitlab.com/1440000bytes/joinstr/-/blob/main/NIP.md
## Message types ## Message types
@ -211,62 +224,62 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
| `AUTH` | used to send authentication challenges | [42](42.md) | | `AUTH` | used to send authentication challenges | [42](42.md) |
| `COUNT` | used to send requested event counts to clients | [45](45.md) | | `COUNT` | used to send requested event counts to clients | [45](45.md) |
Please update these lists when proposing NIPs introducing new event kinds.
## Standardized Tags ## Standardized Tags
| name | value | other parameters | NIP | | name | value | other parameters | NIP |
| ----------------- | ------------------------------------ | -------------------- | ------------------------------------- | | ----------------- | ------------------------------------ | ------------------------------- | ------------------------------------- |
| `e` | event id (hex) | relay URL, marker | [01](01.md), [10](10.md) | | `e` | event id (hex) | relay URL, marker, pubkey (hex) | [01](01.md), [10](10.md) |
| `p` | pubkey (hex) | relay URL, petname | [01](01.md), [02](02.md) | | `p` | pubkey (hex) | relay URL, petname | [01](01.md), [02](02.md) |
| `a` | coordinates to an event | relay URL | [01](01.md) | | `a` | coordinates to an event | relay URL | [01](01.md) |
| `d` | identifier | -- | [01](01.md) | | `d` | identifier | -- | [01](01.md) |
| `g` | geohash | -- | [52](52.md) | | `g` | geohash | -- | [52](52.md) |
| `i` | identity | proof | [39](39.md) | | `i` | identity | proof | [39](39.md) |
| `k` | kind number (string) | -- | [18](18.md), [25](25.md), [72](72.md) | | `k` | kind number (string) | -- | [18](18.md), [25](25.md), [72](72.md) |
| `l` | label, label namespace | annotations | [32](32.md) | | `l` | label, label namespace | -- | [32](32.md) |
| `L` | label namespace | -- | [32](32.md) | | `L` | label namespace | -- | [32](32.md) |
| `m` | MIME type | -- | [94](94.md) | | `m` | MIME type | -- | [94](94.md) |
| `q` | event id (hex) | relay URL | [18](18.md) | | `q` | event id (hex) | relay URL | [18](18.md) |
| `r` | a reference (URL, etc) | petname | | | `r` | a reference (URL, etc) | petname | [24](24.md) |
| `r` | relay url | marker | [65](65.md) | | `r` | relay url | marker | [65](65.md) |
| `t` | hashtag | -- | | | `t` | hashtag | -- | |
| `alt` | summary | -- | [31](31.md) | | `alt` | summary | -- | [31](31.md) |
| `amount` | millisatoshis, stringified | -- | [57](57.md) | | `amount` | millisatoshis, stringified | -- | [57](57.md) |
| `bolt11` | `bolt11` invoice | -- | [57](57.md) | | `bolt11` | `bolt11` invoice | -- | [57](57.md) |
| `challenge` | challenge string | -- | [42](42.md) | | `challenge` | challenge string | -- | [42](42.md) |
| `client` | name, address | relay URL | [89](89.md) | | `client` | name, address | relay URL | [89](89.md) |
| `clone` | git clone URL | -- | [34](34.md) | | `clone` | git clone URL | -- | [34](34.md) |
| `content-warning` | reason | -- | [36](36.md) | | `content-warning` | reason | -- | [36](36.md) |
| `delegation` | pubkey, conditions, delegation token | -- | [26](26.md) | | `delegation` | pubkey, conditions, delegation token | -- | [26](26.md) |
| `description` | description | -- | [34](34.md), [57](57.md), [58](58.md) | | `description` | description | -- | [34](34.md), [57](57.md), [58](58.md) |
| `emoji` | shortcode, image URL | -- | [30](30.md) | | `emoji` | shortcode, image URL | -- | [30](30.md) |
| `encrypted` | -- | -- | [90](90.md) | | `encrypted` | -- | -- | [90](90.md) |
| `expiration` | unix timestamp (string) | -- | [40](40.md) | | `expiration` | unix timestamp (string) | -- | [40](40.md) |
| `goal` | event id (hex) | relay URL | [75](75.md) | | `goal` | event id (hex) | relay URL | [75](75.md) |
| `image` | image URL | dimensions in pixels | [23](23.md), [58](58.md) | | `image` | image URL | dimensions in pixels | [23](23.md), [58](58.md) |
| `imeta` | inline metadata | -- | [92](92.md) | | `imeta` | inline metadata | -- | [92](92.md) |
| `lnurl` | `bech32` encoded `lnurl` | -- | [57](57.md) | | `lnurl` | `bech32` encoded `lnurl` | -- | [57](57.md) |
| `location` | location string | -- | [52](52.md), [99](99.md) | | `location` | location string | -- | [52](52.md), [99](99.md) |
| `name` | name | -- | [34](34.md), [58](58.md) | | `name` | name | -- | [34](34.md), [58](58.md) |
| `nonce` | random | -- | [13](13.md) | | `nonce` | random | difficulty | [13](13.md) |
| `preimage` | hash of `bolt11` invoice | -- | [57](57.md) | | `preimage` | hash of `bolt11` invoice | -- | [57](57.md) |
| `price` | price | currency, frequency | [99](99.md) | | `price` | price | currency, frequency | [99](99.md) |
| `proxy` | external ID | protocol | [48](48.md) | | `proxy` | external ID | protocol | [48](48.md) |
| `published_at` | unix timestamp (string) | -- | [23](23.md) | | `published_at` | unix timestamp (string) | -- | [23](23.md) |
| `relay` | relay url | -- | [42](42.md), [17](17.md) | | `relay` | relay url | -- | [42](42.md), [17](17.md) |
| `relays` | relay list | -- | [57](57.md) | | `relays` | relay list | -- | [57](57.md) |
| `server` | file storage server url | -- | [96](96.md) | | `server` | file storage server url | -- | [96](96.md) |
| `subject` | subject | -- | [14](14.md), [17](17.md) | | `subject` | subject | -- | [14](14.md), [17](17.md) |
| `summary` | article summary | -- | [23](23.md) | | `summary` | article summary | -- | [23](23.md) |
| `thumb` | badge thumbnail | dimensions in pixels | [58](58.md) | | `thumb` | badge thumbnail | dimensions in pixels | [58](58.md) |
| `title` | article title | -- | [23](23.md) | | `title` | article title | -- | [23](23.md) |
| `web` | webpage URL | -- | [34](34.md) | | `web` | webpage URL | -- | [34](34.md) |
| `zap` | pubkey (hex), relay URL | weight | [57](57.md) | | `zap` | pubkey (hex), relay URL | weight | [57](57.md) |
Please update these lists when proposing new NIPs.
## Criteria for acceptance of NIPs ## Criteria for acceptance of NIPs
1. They should be implemented in at least two clients and one relay -- when applicable. 1. They should be fully implemented in at least two clients and one relay -- when applicable.
2. They should make sense. 2. They should make sense.
3. They should be optional and backwards-compatible: care must be taken such that clients and relays that choose to not implement them do not stop working when interacting with the ones that choose to. 3. They should be optional and backwards-compatible: care must be taken such that clients and relays that choose to not implement them do not stop working when interacting with the ones that choose to.
4. There should be no more than one way of doing the same thing. 4. There should be no more than one way of doing the same thing.