refactor signatures into using byte arrays
refactor signatures into using byte arrays

MrStrong/Sia,mtlynch/Sia,johnathanhowell/Sia,NebulousLabs/Sia,ericflo/Sia,mtlynch/Sia,mharkus/Sia,NebulousLabs/Sia,cyrozap/Sia,mnsl/Sia,kustomzone/Sia,mharkus/Sia,ChrisSchinnerl/Sia,ericflo/Sia,ChrisSchinnerl/Sia,mnsl/Sia,rivine/rivine,MrStrong/Sia,Mingling94/Sia,rivine/rivine