0x To briefly define 0x Coin, it is a smart contracts system that can be used by everyone. It is one of the most ambitious tokens of the EthereumEthereumEthereum is an open source, public, blockchain-based distributed computing platform and operating system featuring smart contract functionality. It supports a modified version of Nakamoto consensus via transaction-based state transitions.en.wikipedia.org blockchain and its symbol is Zrx. As for the long narrative, Ethereum is designed to offer a decentralized clearing platform that is part of the blockchain.