B3Note/How it works/Expiry and timers
Expiry and timers
Notes auto-delete on first read or after one hour, whichever comes first. The deletion is a canister timer, not a client-side convention.
Outline — not yet written
The two expiry conditions, how the canister timer is scheduled, and what survives an upgrade.
Until it is written, the source of truth is B3Pay/B3Note.