Ethereum Name Service (ENS) is a decentralized naming protocol that maps the human-readable addresses to the cryptographic addresses or Ethereum addresses in the Ethereum mainnet. It works similarly to DNS, where DNS maps the domain to the IP addresses but has a significantly different architecture due to the capabilities and constraints provided by the Ethereum blockchain. Just like DNS, ENS also uses dot-separated hierarchical domain names. The owner of a domain has complete control over its subdomains. So, if a user owns alice.eth, that user can also create pay.alice.eth or mail.alice.eth, and so on. ENS makes it easy for users to create these subdomains from the main domain.
This article provides an overview of what Serum is and how it plays a role in DeFi. Serum is a decentralized exchange (DEX) built on the Solana blockchain. It uses an innovative order matching system that allows users to trade directly with each other without the need for an order book. This makes Serum one of the fastest and most user-friendly DEXes available. In addition, Serum offers a unique staking program that allows users to earn rewards for holding SRM tokens. These features make Serum an attractive option for users looking to get involved in DeFi.
An order book is a digital ledger of all buy and sell orders that have been placed for a particular cryptocurrency. It is constantly being updated as new orders are placed. The order book can be used to see the current best bid and ask price for a particular cryptocurrency. It can also be used to see the price at which recent trades have been made. This article explain how order book works.