Hello.

I've been tirelessly searching for the IPN (instant payment notification) system which CryptoDouble and others have used on their systems. I can't find an IPN/API that offers that many cryptocurrencies.

I was wondering if anyone knows where I can find the same IPN they used?

BTW, I'm not looking to create another cryptodouble type site. I'm actually looking to create a different type of game that uniquely involves all cryptocurrencies.

Thanks in advance.