Overview - Klayr Documentation Welcome to the official Klayr documentation! Getting started Understand Blockchain Explanations & descriptions about the main concepts and components of the Klayr blockchain. Build Blockchain Guides for sidechain developers. How to develop a sidechain application with the Klayr SDK, explained in different dedicated guides. Run Blockchain Guides for node operators and validators. Integrate Blockchain Guides how to integrate blockchain data in external applications & services. What is blockchain?