One QR on the band shifts with the night — afternoon schedule, midnight bar map, 03:00 ride-home link. If a headliner moves, every band follows on the next scan.
Three hour-of-day slots, three destinations: the day schedule, the after-midnight cocktail menu, and a 03:00–06:00 ride-home button. Slots are evaluated in UTC, so set them against the site's offset. A headliner shift is one edit in the panel — no wristband is reprinted and nothing has to be handed out again.
Free tier includes 1 standard QR code. Upgrade to the paid Eternal tier for blockchain permanence and the recovery key.