Nobody asks whether a blob was available though.
They ask whether it was available then.
Walrus treats availability as a time bounded claim the network coordinates, not a best effort assumption you reconstruct later from logs once the audit thread starts and everyone's tone changes.
Because questions never arrive in order. Ownership flips. Deadlines land. Somebody needs a yes/no tied to a window, honestly, not a narrativ.
When responsibility turns legal... 'probably' becomes liability.