javascript blockchain/sidechain powered by Steem
Steem Smart Contracts is a sidechain powered by Steem, it allows you to perform actions on a decentralized database via the power of Smart Contracts.
This is actually pretty easy, you basically need a Steem account and that's it. To interact with the Smart Contracts you simply post a message on the Steem blockchain (formatted in a specific way), the message will then be catched by the sidechain and processed.
see wiki: https://github.com/harpagon210/steemsmartcontracts/wiki/How-to-setup-a-Steem-Smart-Contracts-node