How do we know Cloudflare isn't copying these random numbers?
It has an EV cert, but something this critical should probably have its TLS endpoint in a secure bunker.
Even more scary, shares a Cloudflare nameserver pair with a carding (credit card theft) forum.
RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.