That is largely an issue of nomenclature, but there is a school of thought that distinguishes between public, open, trust-less blockchains (which then need a co

That is largely an issue of nomenclature, but there is a school of thought that distinguishes between public, open, trust-less blockchains (which then need a consensus mechanism), and private, permissioned blockchains (which have a central authority and thus don't need a consensus mechanism). Whether the latter has many use cases is a good question, but git certainly fits the definition.