About Tether Wallet

Tether Wallet is the self-custodial mobile wallet from Tether Operations (issuer of USDT), launched in 2025. Instead of long hex addresses, every user picks a human-readable name — [email protected] — that works like an email address but for money.

Under the hood, usernames resolve via the UMA (Universal Money Address) protocol — an open extension of LNURL-pay. When someone sends you money, their wallet queries https://tether.me/.well-known/lnurlp/<your-name>, chooses a settlement layer, and receives a payment address or Lightning invoice for that single transaction. Same username → different chains: Bitcoin on-chain, Lightning, Spark L2, Ethereum, Polygon, Arbitrum, and Plasma.

Each user gets stable EVM and Bitcoin addresses (same address every time), plus rotating Lightning invoices for privacy on that layer.

About this scanner

tetherscan.io takes a @tether.me username and aggregates all of that user's public on-chain activity across every supported settlement layer — in one unified view.

1. Resolve identity. Query /.well-known/lnurlp/:user to get the user's Spark identity pubkey.
2. Enumerate addresses. Ask the UMA endpoint for settlement addresses on Bitcoin, Ethereum (and by extension Polygon / Arbitrum / Plasma via CREATE2 determinism), and Spark.
3. Query explorers. Blockscout for EVM chains, plasmascan.to for Plasma, mempool.space for Bitcoin, sparkscan.io for Spark.
4. Price at tx time. CoinGecko historical daily prices to show each transaction's USD value at the moment it happened.
5. Render & cache. Merge, sort, paginate. Every username you search is cached in your browser for reverse-lookup — so if another user's tx has your cached username as counterparty, we tag it @name instead of the raw address.

What we can't show

The blockchain doesn't store usernames — it only stores addresses. So while username → address works (the public LNURL endpoint), the reverse address → username does not, by design.

• Sender usernames on inbound txs — we show the raw sender address. Even the official Tether Wallet app does the same.
• Lightning payments — these use rotating BOLT11 invoices and settle off-chain. Private by design.
• Balances or account state — we only show transactions, not live holdings.

Privacy & integrity

• No accounts, no cookies. You don't sign up, there's no tracker.
• No query logging. We don't keep a log of what usernames you search.
• Your reverse-lookup cache stays on your device. It's in localStorage, not on our server.
• Public data only. Every number on this site comes from public blockchain explorers. Nothing Tether-internal.
• Input sanitized both sides. Strict allow-list regex on client and server to prevent injection into upstream URLs.

Stack & credits

Zero-framework by design — a single Node.js file proxies upstream APIs and serves one HTML file. The entire backend is <200 lines.

Not affiliated with Tether Operations Ltd. All trademarks belong to their respective owners.