Hello !

My friend selling here app on Flippa. One guy offered her $12k for that app and asked do that deal via an escrow site. Site address : escrow-tech.com
Domain registered on Feb 2020 and site has UK registration certificate. Anyone can register UK company. even some sellers also on this board.

He told, he sent her $12k equal BTC and check. She sees balance. But, i put that address on Bockchain explorer, It is not showing any transaction. So, I created an acc there. It gave an BTC wallet and I asked her to send. I got it. Still, no track of transaction on Blockchain explorer.

Note : Minimum Transfer is 0.01 BTC. When I tried to withdraw that BTC to Coinbase acc, It is asking me upload ID proof.

Any ideas ?