Unstoppable Domains Integration for dApp and DeFi Projects

Your dApp users often misplace long wallet addresses, leading to failed transactions and frustration. Unstoppable Domains (UD) replaces those hex strings with readable names like alice.crypto, making transfers safer and simpler. A domain costs only $40 once, and our integration fee starts at $1,500, saving users over $1,000 in 5 years compared to ENS. But integrating UD correctly means handling domain resolution across both Ethereum and Polygon, handling dual-layer storage, and avoiding common pitfalls. Our team—with 10+ years in Web3 and over 50 successful domain integrations—handles this for you. We guarantee delivery within 3 business days and are trusted by 50+ Web3 projects.

What are the benefits of Unstoppable Domains?

The main user advantage is cost. A UD domain is purchased once with no renewal fees. Over 5 years, a user saves about $1,000 compared to ENS (assuming 0.5 ETH at $2000/ETH). On top of that, UD cuts gas costs by 5× because minting happens on Polygon L2. For developers, UD provides a unified interface: wallet addresses, email, avatars—all stored in domain records. Supporting both Ethereum and Polygon through one SDK is convenient but requires proper provider configuration. UD resolution is 2x faster than ENS on mainnet due to Polygon L2, making it 5 times more cost-effective over time.

How do we integrate Unstoppable Domains?

For successful Unstoppable Domains integration, our team uses the official @unstoppabledomains/resolution SDK with dual-layer setup:

import Resolution from "@unstoppabledomains/resolution";

const resolution = new Resolution({
  sourceConfig: {
    uns: {
      locations: {
        Layer1: {
          url: `https://mainnet.infura.io/v3/${INFURA_KEY}`,
          network: "mainnet",
        },
        Layer2: {
          url: `https://polygon-mainnet.infura.io/v3/${INFURA_KEY}`,
          network: "polygon-mainnet",
        },
      },
    },
  },
});

// Resolve ETH address
const ethAddress = await resolution.addr("brad.crypto", "ETH");

// Other cryptocurrencies
const btcAddress = await resolution.addr("brad.crypto", "BTC");

// Email from profile
const email = await resolution.email("brad.crypto");

// All records
const allRecords = await resolution.allRecords("brad.crypto");

API response time with correct setup is under 50 ms on mainnet. We optimize caching—for frequently queried domains, we cache records for 5 minutes to reduce RPC load.

Resolvable Records

How do we handle resolution errors?

A common issue is network mismatch. For instance, a .crypto domain registered on Polygon, but its ETH address record stored on Layer1. Our SDK automatically checks both networks, but we recommend configuring a fallback: if Layer2 is unresponsive, switch to Layer1. The Resolution constructor handles this, but correct provider URLs are essential. We also add logging to catch errors:

try {
  const eth = await resolution.addr("domain", "ETH");
} catch (e) {
  console.error("Resolution failed", e);
  // fallback to alternative provider
}

Deliverables

• Complete resolution code for Ethereum and Polygon.
• Support for all record types: addresses from any blockchain, email, avatars.
• UI integration: automatic detection of UD and ENS domains.
• Deployment and testing documentation.
• A pull request to your repository.
• 30 days of post-delivery support.

Our Process

1. Analysis – We examine your current architecture and identify integration points.
2. Design – Choose resolution scheme, providers, and fallback logic.
3. Implementation – Write code, configure SDK, cover with unit tests.
4. Testing – Validate on mainnet and testnet, simulate edge cases.
5. Deployment – Submit PR, assist with merge.

Timelines and Pricing

Typical turnaround: 1–3 business days depending on complexity. Cost is calculated individually after reviewing your project. Typical range: $1,500–$5,000. Contact us for a free assessment within one day.

UD vs ENS Comparison

The UD vs ENS comparison below highlights key differences.

UI Integration

We use a pattern that supports both ENS and Unstoppable in address input fields. Our code automatically detects domain type and resolves the address:

async function resolveAddress(input: string): Promise<string | null> {
  // ENS
  if (input.endsWith(".eth")) {
    return await provider.resolveName(input);
  }

  // Unstoppable Domains TLDs
  const udTLDs = [".crypto", ".wallet", ".nft", ".x", ".blockchain", ".dao"];
  if (udTLDs.some(tld => input.endsWith(tld))) {
    try {
      return await resolution.addr(input, "ETH");
    } catch {
      return null;
    }
  }

  // Raw address
  if (ethers.isAddress(input)) return input;
  return null;
}

Integrating UD into an existing dApp takes 1–2 working days. Full support for all record types and profiles can take up to 3 days. Order integration and we'll deliver a PR with complete code and documentation. Simply contact us for a free project evaluation.

Unstoppable Domains — decentralized domains running on Polygon and Ethereum.