We are very excited about the use of blockchain, whether it's Bitcoin or not, but we are as enthusiastic as ever about Bitcoin as a global currency and, really more importantly, Bitcoin as a global financial rail.

That's a term that I really like - 'permissionless innovation' - because anybody who has an idea and has a solution can tap into or can leverage the Bitcoin blockchain.

Bitcoin is one of the most viral concepts I've ever encountered.

You just can't bifurcate bitcoin currency from the technology. Bitcoin will always need a monetary base.

While I have never been more excited about SecondMarket, I have chosen to move on from day-to-day management of the private company/fund business so that I can focus 100% of my energy on our digital currency business.

Regulators are going to have to come up with a way to treat Bitcoin that is balanced and thoughtful but also recognize that this is a global phenomenon.