You don't need a centralized database. You have 3 companies 3 different hashes. They catch bob stealing, on 3 different cameras. Each footage can be independ

You don't need a centralized database. You have 3 companies 3 different hashes. They catch bob stealing, on 3 different cameras. Each footage can be independently verified as authentic and not doctored. This would prevent anonymous found footage suggesting someone committed a crime. You definitely don't want one single leakable entity.