You may want to add the public address of the stamp to the OP.
This is a cool item, and it definitely a unique idea. Nice work.
Thankyou my man!
I was going to do just that and leave the Public Address exposed so people could scan and check the load date and quantity, but, I know some people do not want to be dusted.
There is very small amount of BTC and now also equal amount of BTH after the fork so wanted to preserve what was in there.
Once the winner gets it, he can scan the QR code and check for quantity.