Opensea Escrow Service
Open the page of Opensea below.
Hacash Diamond - Collection | OpenSea
After the purchase, buyers can keep the HACD on Opensea or swap it back to the Hacash chain through the guarantors.
Hacash.Diamonds Officially Certified OTC Guarantors:​

How to swap to Hacash

Visit the page "Buy on Opensea", find "If you're a HACD buyer" and follow the step to fill the form.
Buy on Opensea | Hacash.Diamonds
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