The Pink Tick shows that a member has linked a LinkedIn profile and a selfie that the BiggDate team has reviewed and matched to their profile photos. It is optional and free.
It is a trust signal, not a paywall or a ranking boost: it doesn't unlock features and it doesn't change who you are matched with.
Why pink: it is BiggDate's brand accent, and it is visually distinct from the blue ticks social platforms use for celebrity or official accounts.