I love how blockchain has been completely de-branded out of Bitcoin, as if Bitcoin is some heinous forbidden term that can only be associated with criminality and must not be mentioned even once.  The blockchain, of course, is the entire raison d&#x27;etre of Bitcoin.  It&#x27;s the innovation that makes Bitcoin work as a decentralized currency.  Everything else Bitcoin does -- signature verification, P2P, cryptographic hashing, public-key cryptography, etc. -- was on a well-trammeled path.  The blockchain is the break-through, and to disassociate it in this way is misleading and petty.