And the messages are just entries in a local sqlite database. Can’t I just forge a message locally and report it in hope the other person will be banned? At lea

And the messages are just entries in a local sqlite database. Can’t I just forge a message locally and report it in hope the other person will be banned? At least in the Signal app (WhatsApp uses a similar crypto) all messages have plausible deniability, nobody can prove they are real or forged because the signature will be deleted as soon as the message is received.