Again, I never said "blockchain is here to stay"-- just distributed ledgers. And, yes, distributed ledgers have existed forever, but their use by market partic

Again, I never said "blockchain is here to stay"-- just distributed ledgers. And, yes, distributed ledgers have existed forever, but their use by market participants at arm's length is new, as are many new tools we can use to build useful distributed ledgers (including blockchains!).