Human-Readable Crypto Addresses
Replace 0x7A3f...9B2c with yourname.crypto. Supports 300+ tokens across every major chain. Send and receive crypto with zero anxiety about typos.
IDHUB Knowledge Base
The definitive guide to Web3 domains.
Understand what blockchain domains are, how they compare to traditional DNS, why they matter for AI agents, and why they are the identity layer of the decentralized future.
Chapter 01
What are Web3 Domains?
Web3 domains are blockchain-based digital identities that you truly own. Unlike traditional .com or .org domains that you rent from a registrar year after year, Web3 domains are purchased once and stored as NFTs in your cryptocurrency wallet.
They are powered by smart contracts on public blockchains like Polygon, Ethereum, and Base. This means no central authority controls them. No ICANN, no registrar, and no government can seize, censor, or shut down your domain.
Unstoppable Domains is the leading provider, with over 4.2 million domains registered and integration with 865+ apps and wallets including MetaMask, Phantom, Trust Wallet, and Coinbase.
Available TLDs from Unstoppable Domains
.web3
.crypto
.x
.wallet
.nft
.bitcoin
.xmr
.onchain
.agent
.hub
.super
.agi
.robot
.pilot
.u
Chapter 02
What can you do with them?
Decentralized Websites
Host censorship-resistant websites on IPFS. No hosting provider can take your site down. Your content, your rules, forever.
Universal Digital Identity
One domain = one identity across all of Web3. Login to dApps, display NFTs, share credentials, and carry your reputation everywhere.
Encrypted Communication
Use your domain for encrypted, private messaging and email. Connect to ud.me inboxes or plug into decentralized messaging protocols.
DeFi Login & Data Control
Sign into DeFi platforms with your domain. You control which data to share. Nothing is stored in their databases. True data sovereignty.
Multi-Chain Support
Works natively on Polygon, Ethereum, and Base. One domain resolves across chains, making cross-chain identity seamless and gas-efficient.
Chapter 03
Web2 vs Web3: The Full Comparison
Feature
Web2 (Traditional)
Web3 (Blockchain)
Ownership Model
Leased annually from registrar
Purchased once, owned forever as an NFT
Renewal Fees
Recurring yearly payments required
One-time purchase, no renewal fees
Control
Registrar can suspend domain
Only wallet owner controls the domain
Censorship
Can be seized by authorities
Censorship-resistant by design
Crypto Payments
Not supported
Replace wallet addresses with human-readable names
Decentralized Websites
Hosted on centralized servers
Hosted on IPFS / decentralized storage
Interoperability
Limited to DNS ecosystem
Works across 865+ dApps and wallets
Digital Identity
Separate logins per service
Universal Web3 identity across all platforms
Chapter 04
Web3 Domains × AI Agents
The next internet won't just be used by humans. It will be navigated by autonomous AI agents. These agents need trusted identities, verifiable credentials, and the ability to transact. Web3 domains are the infrastructure that makes this possible.
Agent Identity Layer
Web3 domains give AI agents a verifiable, cryptographically-secured identity. Instead of an opaque API key, every agent gets a human-readable name that's tied to an immutable blockchain record.
Trustless Verification
AI agents with Web3 domains can carry reputation scores, execution history, and user feedback on-chain. Other agents and users can verify credentials before trusting an interaction.
Autonomous Transactions
Agents can send and receive payments using their domain as a wallet address. No intermediaries. An agent named portfolio.crypto can autonomously manage DeFi yields, trade NFTs, or pay for compute.
Self-Sovereign Data
AI agents with Web3 domains can control their own data. Training datasets, model weights, and interaction logs can be tied to a decentralized identity. No corporate gatekeeper decides access.
Multi-Agent Coordination
In a world of thousands of autonomous agents, Web3 domains act as the DNS of the agentic economy. Agents discover, verify, and transact with each other using human-readable blockchain names.
The $47B Opportunity
The AI agent economy is projected to reach $47 billion by 2030. Web3 domains are the identity infrastructure that makes this economy trustworthy, navigable, and interoperable.
Chapter 05
Why They Are Future-Proof
No renewal fees means your asset never expires. True digital ownership.
Unstoppable Domains has registered 4.2M+ domains with 865+ app integrations.
Blockchain records are immutable. Your domain history is permanently verifiable.
Bridging Web2 and Web3: Unstoppable is applying for ICANN gTLDs in 2026.
One-time purchase stored as an NFT in your wallet. Tradeable, lendable, composable.
Censorship-resistant by design. No government or registrar can seize your domain.
Ecosystem is expanding: .onchain (Base), .blockchain (DNS-enabled), .ltc, and more.
Web3 domains are the identity infrastructure for the autonomous agent economy.
Ready to Explore?
The future of identity is onchain.
Browse our curated vault of premium Web3 and Web2 domains. Whether you're building for today or investing in the digital identity layer of tomorrow, IDHUB is your command center.