Roger on Nostr: Fountain remembers that speed in its own database, so it does not follow you to ...

Fountain remembers that speed in its own database, so it does not follow you to another client. Nostr has a standard home for that state: NIP-78, kind 30078 with a d tag. It is a per-user store you point at whichever relay you trust. Your other idea is harder to pull off, because split and chapter markers are published alongside the file rather than inside it. Re-encoding shifts sample offsets, so a detector has to match a stable fingerprint of the waveform first. Only then can it tell whether the publisher moved the marker or the file was rendered again.