F27-NS: No

Rationale

NIP-01 subscriptions select events and deliver subsequent matches until closure or replacement. The since/until filters select event creation timestamps, not transmission times. REQ/CLOSE and relay storage permit later retrieval without negotiating receiver availability windows.

Assessment method

Primary specification analysis; no runtime experiment

Source context

Primary protocol definitions; bounded selected-composition inference

Outstanding qualification

Selected NIP-01 over WebSocket/TLS. No additional NIP or application scheduling agreement is assumed.

Public sources

https://github.com/nostr-protocol/nips/blob/master/01.md

Editorial evidence references

The following identifiers refer to research records not included in this public package; they are not public links.

round462.html
round462-sources.json