The goal is not for it to stand in court. It's only to act as a canary, kind of a checksum (and I suspect it's not the only one, only the most obvious/curious)

The goal is not for it to stand in court. It's only to act as a canary, kind of a checksum (and I suspect it's not the only one, only the most obvious/curious). When the band arrives into the venue, they check for canaries: if they see something wrong, it's a good enough reason to trigger a full inspection for serious issues.