BT upload counts were a client side value, they were trivial to fake and the tracker would trust the client. PoW cannot rely on client side trust, it must be un

BT upload counts were a client side value, they were trivial to fake and the tracker would trust the client. PoW cannot rely on client side trust, it must be universally verifiable. We have a few ways to do this, partial hash collisions, finding large primes, finding prime constellations, calculating cuckoo cycles… The primes seem to be valuable, alas nobody cared about primecoin or riecoin.