Does BamChi show a trust tick on profiles?

No tick. A badge that most profiles would carry tells you nothing, and would read as if BamChi had checked everyone. It hasn't, so there isn't one.

What is shown. A rating once a business has reviews (never a 0.0), repeat clients, reply rate and last active — each only when there is real data behind it — and the business's declared police check and certifications.

What protects you. Your card is held, not charged, until they accept; the cancellation policy is shown before you pay; and a person from BamChi is in the app if something goes wrong.