Example Evidence: Public Preview, Private Source File
Existing vault with limits
A player shares a video preview in a POP while depositing its source file in the private Safe Deposit Box. The certificate records the deposited file and supports exact-file comparison.
A YouTube conversion may change the bytes, so the published preview can differ from the deposited original. Keep the source file and certificate for verification.
The current starter limit is 90 MB. Paid storage tiers, larger resumable uploads and independent timestamping remain future work. A certificate supports integrity of the deposit, not proof of authorship or truth of an event.