The Nostr network has introduced a new framework for service providers to offer live activities on their platform. The Live Event framework allows participants to easily join and leave an activity while being logged and queried by clients. This is achieved through the use of parameterized replaceable events, which are constantly updated as users join or leave the event. Providers are expected to keep the participant list small and select which participants get named in the event when limits are reached. Clients can subscribe to `kind:30311` events or follow lists/statuses to receive updates on live activities. Live Activity management clients are expected to update `kind:30311` during the event, with the `starts` and `ends` timestamp being updated when the status changes to and from `live`. The activity must be linked to using the NIP-19 naddr code along with the "a" tag (see [NIP-33](33.md) and [NIP-19](19

Link: https://github.com/nostr-protocol/nips/blob/master/53.md