Using the cosmic background radiation – the “echo of the Big Bang*” – as a random number generation isn't a new idea, but a couple of scientists have run the slide-rule over measurements of the CMB power spectrum and reckon it offers a random number space big enough to beat any current computer.
Idea close to Stanislaw Lem's "His Master's Voice" whereby someone sells neutrino spectrum data as good sources of random numbers to make a bit of money on the side. Then these turn out to be unexpectedly very nonrandom, which leads to a suicide, lawsuits and more.