Keep an eye on Counterparty market cap in the next few months.
From the official website:
Can Ethereum smart contracts run on Counterparty?
Yes. Counterparty supports the same smart contract functionality that Ethereum does. There are a few minor tweaks (e.g. hardcoded addresses needing to change) but any Solidity or Serpent smart contract from Ethereum should be able to work on Counterparty with very little or no modification.
tldr; - ethereum smart contracts on bitcoin blockchain