Skip genesis hash chain, when first_hash None
Skip genesis hash chain, when first_hash None

cyyber/QRL,randomshinichi/QRL,elliottdehn/QRL,randomshinichi/QRL,elliottdehn/QRL,elliottdehn/QRL,jleni/QRL,cyyber/QRL,theQRL/QRL,jleni/QRL,elliottdehn/QRL,theQRL/QRL