No.175
Ethereum Name Service ENS
turns a wall of hex into a name you can actually say out loud
🎭 part librarian, part front desk for Ethereum: every address checks in and walks out with a name
💬 “Hand me a wallet that reads 0xC18360…F9D72 and I will hand back alice.eth. You remember the name; I remember the long part. That is the whole job, and I am happy to keep it.”
- The job: map a long wallet address to a short .eth name, so you share
alice.ethinstead of a 42-character string. - How: a set of smart contracts on Ethereum, not a separate chain. Each name is an NFT you register as a yearly lease.
- The token: ENS is a separate ERC-20 used to vote in the ENS DAO. A name and the token are two different things.
- Supply: a fixed 100,000,000 ENS, all minted at the November 2021 launch, none mined after.
📖 The Story
April 4, 2016. An engineer named Nick Johnson, fresh from years at Google and now at the Ethereum Foundation, wrote up a proposal called EIP-137. The complaint behind it was simple and very human: wallet addresses are an unreadable smear of letters and numbers, easy to mistype and almost impossible to read aloud. He wanted Ethereum to have a phone book.
May 4, 2017. The protocol went live with the .eth name at its center. The date was a small joke, Star Wars Day, but the idea underneath it was serious: instead of memorizing 0xC18360…F9D72, you could register alice.eth and just give people that. Under the hood, two pieces did the work, a Registry that records which name belongs to whom, and Resolvers that look up the real address when someone asks.
November 8, 2021. ENS grew a community layer. The project launched its governance token and handed control to the ENS DAO. A quarter of the tokens were airdropped to people who had already registered .eth names, roughly 137,000 addresses, with the snapshot taken back on October 31. The next day, the project's market value crossed a billion dollars. The quiet utility had a crowd around it now.
Through all of it the role never changed. ENS is the part of the system you barely notice when it works, the index card behind the desk that lets everyone else stop squinting at hex.
📊 Stats
These bands are our editorial read for a beginner codex, not market data.
🧩 How it works
ENS lives entirely inside Ethereum as a set of smart contracts, so it borrows Ethereum's security rather than running its own network. When you register a name, you mint an NFT (an ERC-721 token by default) and pay a yearly fee in ETH, like renting the name rather than buying it forever. Look up a name and two contracts answer: the Registry is the central directory that says who owns the name and which Resolver to ask, and that Resolver returns whatever the name points to, not just a wallet address but also a website content hash and other profile data like an avatar.
🌗 Light & Shadow
- Genuinely useful from day one. A readable name cuts down on the worst kind of crypto mistake, sending funds to a mistyped address
- It does not run its own chain, so it inherits Ethereum's security instead of having to defend a new network (fewer places to break)
- A .eth name doubles as a portable identity, a handle wallets and apps across the ecosystem already recognize
- Fixed supply: 100,000,000 ENS were all minted at launch, with no ongoing issuance to dilute holders
- You do not own a name forever. It is a yearly lease in ETH, and if you forget to renew, someone else can take it
- The ENS token is for voting, not for using the names. Plenty of people register a .eth name and never touch the token, which limits what the token is actually for
- Names go to whoever registers first, so short words and brand names get grabbed by squatters and resold at a markup, the same headache that has plagued web domains for decades
- It is widely supported but still niche. Most people outside crypto have never heard of a .eth name, and there are rival naming projects competing for the same space
🧬 Evolution lineage
ENS is not a fork of any coin and shares no founder-sibling. Its lineage is by ecosystem: a native Ethereum application, built on Ethereum, secured by its proof-of-stake consensus, with fees paid in ETH. Think of it less as a coin's descendant and more as an old idea reborn, the internet's traditional DNS, rebuilt on-chain.
In the naming and identity branch it sits next to rivals like Unstoppable Domains, competitors by purpose, not relatives by code.
🧭 Meet other friends
❓ FAQ
- What is Ethereum Name Service (ENS)?
- A naming system built on Ethereum. It maps a hard-to-read wallet address like 0xC18360… to a short, human name like alice.eth, so you can send and receive without copying a wall of letters and numbers. People call it the phone book or DNS of crypto.
- Is a .eth name the same thing as the ENS token?
- No, they are two separate things. A .eth name is an NFT you register, like a yearly lease paid in ETH. The ENS token is a separate ERC-20 used only for voting in the ENS DAO. You can own a name without the token, and the token without a name.
- Do I own my .eth name forever?
- Not exactly. A .eth name is a renewable annual lease, not a permanent buy. You hold it for as long as you keep paying the yearly fee in ETH. If the registration lapses and you do not renew, the name can be claimed by someone else.
- How many ENS tokens exist?
- There is a fixed total of 100,000,000 ENS, all minted at the November 2021 launch, with no ongoing mining. At launch half went to the DAO treasury, a quarter was airdropped to past .eth holders, and a quarter went to contributors on a four-year vesting schedule.
⚠️ Not investment advice. All figures are for information only