NNS (NEO Name Service) is Neo's domain name service, a distributed, open source and extensible Domain Name System based on Neo blockchain. Intended to replace irregular strings that are difficult for humans to remember, such as wallet addresses and smart contract hashes, with abbreviations of words and phrases. We first provide domain name services that end with ". neo".Through domain name services, people no longer have to memorize incomprehensible addresses and hashes, as long as they know a word or phrase, they can transfer funds and call contracts. NNS can resolve Domain Name System to various targets. The easiest to associate is Neo's account (Address) or smart contract address (ScriptHash). We have reserved sufficient scalability to support more parsing target protocols without updating the contract.NNC (NEO Name Credit) is a token issued by Neo's Domain Name System, NNS. At present, NNC can obtain dividends of domain name auction fees, or purchase domain names in the secondary market as a payment token.The application scenarios of NNC in the future will continue to expand, such as applying to other Dapps, relying on diverse Dapps to form DAOs, avoiding the risks of individual applications, and making the value of NNC more stable....