If we use Peter R's argument on that subject, then the noble metals (silver and gold) are a billions year old blockchain with built-in pruning, thus making anything cryptocurrency related a joke.  It was a very illogical comment to make by not admitting the ledger of humans has been metals for thousands of years and it's NEVER been the scamchain.  So if he claims the oldest ledger wins, then metals win, not any of this garbage.