I totally agree, in practice sha-256 is just memoryless. Based on the current hash rate it would be about 10^40 life-times-of-the-universe to cover all possibl

I totally agree, in practice sha-256 is just memoryless. Based on the current hash rate it would be about 10^40 life-times-of-the-universe to cover all possible hashes presuming no collisions.