Convert genesis hash hexstr to BIGNUM, upon chain-set
Convert genesis hash hexstr to BIGNUM, upon chain-set

mezzovide/picocoin,favioflamingo/picocoin,01BTC10/picocoin,favioflamingo/picocoin,jl777/picocoin,mezzovide/picocoin,jl777/picocoin,dtebbs/picocoin,01BTC10/picocoin,01BTC10/picocoin,dtebbs/picocoin,dtebbs/picocoin,jl777/picocoin,mezzovide/picocoin