Todd McDonald of R3 talks Blockchains, Distributed Ledgers and Banks

R3 is a technology company out to establish a blockchain database
upon which the financial system can rely and build.  They
lead a consortium of 70+ financial institutions - including
Barclays.  In this episode you'll learn the difference
between a distributed ledger and a blockchain, what the global
trading system could look like if it were blockchain-based, and
how smart contracts work.