Dave Tapscott gives excellent TED Talk on Cryptocurrencies and the Blockchain.

The technology likely to have the greatest impact on the next few decades has arrived. And it's not social media. It's not big data. It's not robotics. It's not even AI. You'll be surprised to learn that it's the underlying technology of digital currencies like Bitcoin. It's called the blockchain.

“So could we develop some new approaches to this problem of inequality? Because the only approach today is to redistribute wealth, tax people and spread it around more. Could we pre-distribute wealth? Could we change the way that wealth gets created in the first place by democratizing wealth creation, engaging more people in the economy, and then ensuring that they got fair compensation? Let me describe five ways that this can be done.”