In this session, Manuel Rauber and Ingo Rammer will show you the technical details of writing smart contracts ("Chaincode" in Fabric’s parlance) with Node.js on top of Hyperledger Fabric. You’ll learn about the basic technical elements of a Fabric Network, and how to create, deploy and version your own code. You’ll see how Fabric’s security concept works and how you can interact with a channel’s ledger state from your code. We’ll also demonstrate how you can create clients for this Chaincode and how to connect your existing applications with your new blockchain networks.