Questions tagged [nbits]

Why this ugly looking formula to calculate 'target' from 'nBits' in block header: target = coefficient * 256**(exponent-3). Why not? : target = coefficient * 256**(exponent). What is the need of subtracting 3. All we need is to be able to…

I was wondering how the nBits are calculated from the target, I know how the the target is calculated from nBits, but how is the nBits calculated from the target?

I remember some where was table and python scrypt for do this , when reinstall my debian i was lose this script. Example we hv uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); what is = 0x1d00ffff