> being ultimately based around a single consensus ledger You managed to got two things wrong in one short sentence: it's not single ledger (everybody at each

> being ultimately based around a single consensus ledger You managed to got two things wrong in one short sentence: it's not single ledger (everybody at each point have their own version, only to some degree compatible with anybody else), and it's not consensus ledger, as in consensus problem a.k.a. Byzantine generals. Bitcoin never aimed at consensus, it was always about timestamping the documents (transactions).