A one-of-one piece can remain active or listed after a paid order already claims it. Storefront availability alone is not enough for unique inventory, because the cost of a false positive is selling the same piece twice.
Interactive demo
Check the piece before it stays available
Change the order evidence to see whether a unique piece can remain in the customer-facing catalogue.
- CurrentListed
- NextPaid order found
- NextRefunded
- NextCleared
Current state
Listed
The product is active, but paid-order evidence has not been checked. The piece stays under review.
How it works
- The catalogue starts with the unique piece and its current storefront state.
- The verification checks paid orders for evidence that the piece has already sold.
- A refunded or cancelled order returns the piece to review instead of making it available automatically.
- A paid-order match blocks the piece from the customer-facing selection.
- Only a cleared piece moves into a campaign, private link, or live catalogue.
What becomes easier for your team
- Trusting the active product flag for unique inventory.
- Checking old campaign lists by memory.
- Offering the same piece to two customers.
- Restoring a refunded piece without review.
What we connect
Unique catalogue records, storefront state, paid-order evidence, refund state, campaign selection, and customer-facing availability become one guarded decision.
Good for
Vintage furniture, collectible design, art, samples, archive pieces, and any catalogue where quantity one must mean exactly one.
Get it on your store
Available through a Systems Build and maintained on stores we run. Show us where unique items live and what counts as a completed sale. We will make the catalogue fail closed when the evidence disagrees. Tell us about the store.



