User blog comment:Vel!/Proof of the Riemann hypothesis?/@comment-88.161.58.50-20141120221109/@comment-1605058-20141120224622

Here is a far simpler proof. Indeed, it even shows that, in the limit, Mertens' conjecture is true, thus leaving to estimates a lot stronger than Riemann hypothesis. It doesn't, unfortunatelly, extend to generalized Riemann hypothesis, as far as I believe...