What is ENS Ethereum Name Service?

ENS is the Ethereum Name Service, a distributed, open, and extensible naming system based on the Ethereum blockchain. The ENS is designed to address the needs of human-readable naming of resources connected to the Ethereum network, such as:

-Wallet addresses: for people and for contracts
-Multisig contracts
-Ethereum DApps
-Views/data from smart contracts off-chain
-Any content identified by an Ethereum transaction hash

The primary purpose of ENS is to make it very easy for people to send payments to each other and interact with smart contracts without having to know long hexadecimal addresses. ENS eliminates the need for users to manually copy or type addresses, and for developers to include long strings of unintelligible addresses in their user interfaces.


What is ENS?


The Ethereum Name Service is a decentralised domain name system running on the Ethereum blockchain. It is intended to resolve the problem of having to remember long and complicated addresses for Ethereum addresses (wallets, contracts, etc). ENS addresses are shorter and easier to remember than regular Ethereum addresses, and can be updated to change the address they point to.


What is the Ethereum Name Service?


The Ethereum Name Service is a decentralized system that allows users to register and resolve human-readable names on the Ethereum blockchain. These names can be used to identify and interact with smart contracts and other addresses on the network, simplifying complex wallet addresses and making it easier for users to send and receive payments.


What are the benefits of using ENS?


There are a number of benefits to using the Ethereum Name Service, including:

-Simplicity: ENS eliminates the need to remember long, complicated addresses by allowing you to send funds to an easily remembered name like 'mywallet.eth'.

-Compatibility: ENS is compatible with any wallet or contract that can send transactions, meaning you can use it regardless of which wallet you are using.

-Security: ENS names are stored on the blockchain and cannot be changed by anyone except the owner, providing a secure way to store your wallet addresses.

-Flexibility: ENS allows for multiple addresses to be associated with a single name, meaning you can use it for both your personal and professional addresses.


How does ENS work?


The Ethereum Name Service is a distributed, decentralized domain name system for the Ethereum blockchain. The service is intended to provide a censorship-resistant naming system for Ethereum addresses, smart contracts, and decentralized applications (dapps). ENS is designed to be integrated with other Ethereum protocols and dapps, and will eventually replace the existing Ethereum address system.


How does the ENS Registry work?


The Ethereum Name Service is a distributed, open, and extensible naming system based on the Ethereum blockchain. The ENS Registry contract is deployed on the main Ethereum network, Rinkeby testnet, and Ropsten testnet.

The registry is updated via transactions signed by owners of domains. These transactions can be initiated by domain owners themselves, or by third-party services acting on their behalf.

The ENS Registry contract maps domain names to various associated data, including but not limited to:

- Resolver address: address of the resolver contract responsible for resolving a name to its associated data (e.g. IP address)
- Owner address: address of the owner of a domain name
- TTL: time-to- live value for a domain name record, specifying how long it should be cached


How does the ENS Resolver work?


An ENS resolver is a smart contract that implements the public ENS API and is used to resolve an ENS name to its corresponding content hash. When you resolve an ENS name using the public resolver, your query is handled by a node that runs software that is compatible with the public resolver's API.

The node network provides two types of resolution: real-time (RT) and historical (HT). RT resolution is used to fetch data that has been published since the last time the node was online. HT resolution can be used to fetch data that has been published at any time in the past, including data that was published before the node was online.


ENS use cases


ENS provides a secure & decentralised way to address resources both on and off the Ethereum blockchain using simple, human-readable names. Developers can use ENS to create decentralized applications (dapps) that have human-readable names that can be easily shared and accessed by anyone.


Domain name registration


Domain name registration is one of the most common use cases for ENS. You can use ENS to register a .eth domain name that is resolvable by any ENS-compatible browser or wallet.

To do this, you first need to have some ETH in your wallet to pay for the transaction fees. Then, you can use a domain registrar like MyEtherWallet or MetaMask to register your domain name.

Once your domain name is registered, you can set it to resolve to any address on the Ethereum network, including smart contracts. This makes it easy for users to send ETH or tokens to your contract without having to know its address.

You can also use ENS to register other types of domains, such as .xyz or .kred. These domains can be used for any purpose, including creating human-readable addresses for smart contracts, web sites, or email addresses.


Decentralized Identifiers


ENS enables you to map your favorite human-readable name to any resource on the Ethereum network, be that an ENS name or an address for a smart contract, ETH token, or decentralized application.

Ethereum Name Service provides a decentralized way of storing and mapping human-readable names to Ethereum addresses. It is similar to how DNS works for the internet, but instead of mapping domain names to IP addresses, ENS maps Ethereum addresses to other Ethereum addresses.

This can be useful in a number of different situations:

- When sending ETH or tokens to another person, you can use their ENS name instead of having to copy and paste their long hexadecimal address.
- When signing up for a decentralized application (dApp), you can use your ENS name instead of having to remember a complicated smart contract address.
- When interacting with a smart contract on the Ethereum network, you can use an ENS name instead of the raw hexadecimal encoding of the contract's address.

ENS is powered by a decentralized network of servers that run the ENS software and are incentivized by cryptocurrency rewards to keep the system running smoothly. Anybody can run an ENS server, and there is no centralized authority that can take down the system or censor information stored in it.




Overall, the Ethereum Name Service is a great way to create human-readable names for addresses on the Ethereum blockchain. This can be extremely helpful in terms of making Ethereum transactions more user-friendly, and ultimately helping to drive mainstream adoption of the technology. In addition, ENS is also useful in terms of creating subdomains that can be used to host smart contracts and Dapps, making it a powerful tool for developers as well.