The proof stack is a quality gate — a set of three conditions that must all be in place before a Bondi hair salon moves from controlled pilot to broader client invitation. If any block is missing, stay in pilot mode and close the gap first.
Each block represents a real quality gate — not a checkbox exercise. A Bondi hair salon that has completed all three is operating the model correctly. A salon that skips any block is taking a positioning risk that's unnecessary given how simple each requirement is.
| Metric | Healthy signal | Review trigger |
|---|---|---|
| Redemptions/week | Growing or stable. At least 1–2/week in pilot. | Zero redemptions for 2+ weeks running |
| Payout total | Increasing week-on-week month 1. Stable from month 2. | Flat or declining without scale change |
| Repeat-client signal | Any repeat booking at spa = strong quality confirmation. | No repeat bookings after 4 weeks of redemptions |
| Invitation consistency | Same line from every team member. No improvisation. | Team members using different language or pitching the offer |