Programming skills are very much required to write chaincode. As blockchain has a distributed ledger, only the Go language was supported in the initial versions of Hyperledger Fabric (HLF). However, with the evolution of HLF, it now supports multiple languages and plans to add more in the future. As of Fabric version 1.3, it supports writing chaincode in Go, Node.js, and Java. To explore each of these, you can download samples from under the Developer tools tab in the OBP instance console.