mirror of
https://github.com/nostr-protocol/nips.git
synced 2024-11-10 06:09:08 -05:00
123 lines
5.1 KiB
Markdown
123 lines
5.1 KiB
Markdown
NIP-53
|
|
======
|
|
|
|
Live Activities
|
|
---------------
|
|
|
|
`draft` `optional`
|
|
|
|
Service providers want to offer live activities to the Nostr network in such a way that participants can easily log and query by clients. This NIP describes a general framework to advertise the involvement of pubkeys in such live activities.
|
|
|
|
## Concepts
|
|
|
|
### Live Event
|
|
|
|
A special event with `kind:30311` "Live Event" is defined as a _parameterized replaceable event_ of public `p` tags. Each `p` tag SHOULD have a **displayable** marker name for the current role (e.g. `Host`, `Speaker`, `Participant`) of the user in the event and the relay information MAY be empty. This event will be constantly updated as participants join and leave the activity.
|
|
|
|
For example:
|
|
|
|
```json
|
|
{
|
|
"kind": 30311,
|
|
"tags": [
|
|
["d", "<unique identifier>"],
|
|
["title", "<name of the event>"],
|
|
["summary", "<description>"],
|
|
["image", "<preview image url>"],
|
|
["t", "hashtag"]
|
|
["streaming", "<url>"],
|
|
["recording", "<url>"], // used to place the edited video once the activity is over
|
|
["starts", "<unix timestamp in seconds>"],
|
|
["ends", "<unix timestamp in seconds>"],
|
|
["status", "<planned, live, ended>"],
|
|
["current_participants", "<number>"],
|
|
["total_participants", "<number>"],
|
|
["p", "91cf9..4e5ca", "wss://provider1.com/", "Host", "<proof>"],
|
|
["p", "14aeb..8dad4", "wss://provider2.com/nostr", "Speaker"],
|
|
["p", "612ae..e610f", "ws://provider3.com/ws", "Participant"],
|
|
["relays", "wss://one.com", "wss://two.com", ...]
|
|
],
|
|
"content": "",
|
|
...
|
|
}
|
|
```
|
|
|
|
A distinct `d` tag should be used for each activity. All other tags are optional.
|
|
|
|
Providers SHOULD keep the participant list small (e.g. under 1000 users) and, when limits are reached, Providers SHOULD select which participants get named in the event. Clients should not expect a comprehensive list. Once the activity ends, the event can be deleted or updated to summarize the activity and provide async content (e.g. recording of the event).
|
|
|
|
Clients are expected to subscribe to `kind:30311` events in general or for given follow lists and statuses. Clients MAY display participants' roles in activities as well as access points to join the activity.
|
|
|
|
Live Activity management clients are expected to constantly update `kind:30311` during the event. Clients MAY choose to consider `status=live` events after 1hr without any update as `ended`. The `starts` and `ends` timestamp SHOULD be updated when the status changes to and from `live`
|
|
|
|
The activity MUST be linked to using the [NIP-19](19.md) `naddr` code along with the `a` tag.
|
|
|
|
### Proof of Agreement to Participate
|
|
|
|
Event owners can add proof as the 5th term in each `p` tag to clarify the participant's agreement in joining the event. The proof is a signed SHA256 of the complete `a` Tag of the event (`kind:pubkey:dTag`) by each `p`'s private key, encoded in hex.
|
|
|
|
Clients MAY only display participants if the proof is available or MAY display participants as "invited" if the proof is not available.
|
|
|
|
This feature is important to avoid malicious event owners adding large account holders to the event, without their knowledge, to lure their followers into the malicious owner's trap.
|
|
|
|
### Live Chat Message
|
|
|
|
Event `kind:1311` is live chat's channel message. Clients MUST include the `a` tag of the activity with a `root` marker. Other Kind-1 tags such as `reply` and `mention` can also be used.
|
|
|
|
```json
|
|
{
|
|
"kind": 1311,
|
|
"tags": [
|
|
["a", "30311:<Community event author pubkey>:<d-identifier of the community>", "<Optional relay url>", "root"],
|
|
],
|
|
"content": "Zaps to live streams is beautiful.",
|
|
...
|
|
}
|
|
```
|
|
|
|
## 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).
|
|
|
|
## Example
|
|
|
|
### Live Streaming
|
|
|
|
```json
|
|
{
|
|
"id": "57f28dbc264990e2c61e80a883862f7c114019804208b14da0bff81371e484d2",
|
|
"pubkey": "1597246ac22f7d1375041054f2a4986bd971d8d196d7997e48973263ac9879ec",
|
|
"created_at": 1687182672,
|
|
"kind": 30311,
|
|
"tags": [
|
|
["d", "demo-cf-stream"],
|
|
["title", "Adult Swim Metalocalypse"],
|
|
["summary", "Live stream from IPTV-ORG collection"],
|
|
["streaming", "https://adultswim-vodlive.cdn.turner.com/live/metalocalypse/stream.m3u8"],
|
|
["starts", "1687182672"],
|
|
["status", "live"],
|
|
["t", "animation"],
|
|
["t", "iptv"],
|
|
["image", "https://i.imgur.com/CaKq6Mt.png"]
|
|
],
|
|
"content": "",
|
|
"sig": "5bc7a60f5688effa5287244a24768cbe0dcd854436090abc3bef172f7f5db1410af4277508dbafc4f70a754a891c90ce3b966a7bc47e7c1eb71ff57640f3d389"
|
|
}
|
|
```
|
|
|
|
### Live Streaming chat message
|
|
|
|
```json
|
|
{
|
|
"id": "97aa81798ee6c5637f7b21a411f89e10244e195aa91cb341bf49f718e36c8188",
|
|
"pubkey": "3f770d65d3a764a9c5cb503ae123e62ec7598ad035d836e2a810f3877a745b24",
|
|
"created_at": 1687286726,
|
|
"kind": 1311,
|
|
"tags": [
|
|
["a", "30311:1597246ac22f7d1375041054f2a4986bd971d8d196d7997e48973263ac9879ec:demo-cf-stream", "", "root"]
|
|
],
|
|
"content": "Zaps to live streams is beautiful.",
|
|
"sig": "997f62ddfc0827c121043074d50cfce7a528e978c575722748629a4137c45b75bdbc84170bedc723ef0a5a4c3daebf1fef2e93f5e2ddb98e5d685d022c30b622"
|
|
}
|
|
````
|