I am excited with your transaction bought plot of land measuring using bitcoin as transaction payment, but what have you did this legal at the future and how about your certificate could be allow by government or not. I think really worry when your transaction using bitcoin depending what ever kinds of transaction sending between exchange to exchange or not but when legal by government and saw about the payment way will make them not change your plot of land measuring bought?
The transaction made by the OP seemed legit to me even though he paid the seller using bitcoin. It is possible that the OP did not mention payment via bitcoin on the proof of payment
[transaction receipt] because he knows that bitcoin is illegal as a means of payment in his country. This allows him and the seller to sign a receipt with the estimated value of the payment in fiat instead of bitcoin which is not legalized by his country's government.
I tried to understand what he wrote, and this is what saved him from breaking the rules of his country's government if I don't misunderstand him.
I both signed the receipt that I had prepared as proof of payment written on stamp duty.