TreasureCheck is a permanent provenance registry for shipwreck and Spanish colonial coins. Register your coin once — its documented history, verified possession, and chain of custody follow it forever. Any buyer can scan it and see the truth before money moves.
In this market, the story is the price. A 1653 Potosí 8 reales with solid wreck attribution is worth multiples of the same coin without it. When the paper dies, the premium dies with it.