What is blockchain? Explained originally appeared on TheStreet. Imagine a notebook that everyone in the world can see but no one can erase. Now imagine that this notebook isn’t stored in just one ...

Imagine a notebook that everyone in the world can see but no one can erase. Now imagine that this notebook isn’t stored in just one place, but copied and constantly updated on millions of computers at ...

You hear 'Bitcoin' and 'blockchain' used together so often, it's easy to think they're the same thing. They're not, but their relationship is the engine behind the entire cryptocurrency revolution.

There are lots of interesting blockchain developments in digital marketing, but no one's made a big breakthrough – at least, not yet.