Preface: In this article, you will learn how the blockchain of the first layer of ZetaChain is built. ☆ What is ZetaChain ? ZetaChain is a decentralized multi-chain ecosystem characterized by flexibility, simplicity and security. In the ZetaChain ecosystem, it is possible to exchange messages between any blockchains, and there is also the possibility of using universal smart contracts. At the top level, ZetaChain is a blockchain based on the Proof of Stake (PoS) consensus algorithm, which was...