My question builds on the Stack Overflow question [*How can I generate truly (not pseudo) random numbers with C#?*](https://stackoverflow.com/questions/1234094/how-can-i-generate-truly-not-pseudo-random-numbers-with-c)

Is there a web API or something that can generate **truly** random numbers that I can use in my app? 

I am not talking about pseudo-random generators of any sort, but truly random number API, which is usable in, say C#.