Hello !
I have new btc casino with blockchain v3 wallet
my developer didn't do abything for fraud / double spending protection.
Could you please write here the instructions how to make the site more secured?
Thank you very much!
there is nothing complicated about it just wait for confirmation.
just like any other casino gambling site. for small amounts you can set 1 confirmation minimum and bigger amounts 3 confirmation
or set all deposits to at least 3 confirmation before crediting the account.
there are other complicated ways to assess a transaction to see the risk but they are not 100% fool proof and what I said above is the way that seems to be working for everyone else.