Money left on‑chain. Still yours.

Most of these contracts are immutable. Nobody can close them or move the money, and the rightful owner can take it out at any time. People forget because the project shut down, the airdrop was never announced to them, the amount was small compared with gas, or the wallet was simply left alone. Most of these contracts have no deadline, but we cannot promise that for every one: we have not checked each contract for an owner-controlled recovery function. If you decide to claim, sooner is safer.

1. Use the wallet that owns the address you looked up. Never type a seed phrase or private key into any site.
2. Open the contract link from the result card on etherscan.io, not from a search result or a message.
3. First use Read Contract to check the balance. Then use Write Contract with the values shown on the card.
4. Before you confirm in your wallet, check that it names the function shown on the card and the same contract. It must not ask for a token approval, unless the card itself lists an approval step: a few old refund contracts (for example The DAO and DigixDAO) take your tokens back in exchange for ETH, and there the approval names the refund contract shown on the card, for the amount shown.
5. If anything on screen differs from the card, stop.

A site that asks you to connect a wallet and sign a transaction looks exactly like a phishing site, and a bug in it would be a bug in your money. We chose to be boring: we show you the contract, the function and the values, and you make the call yourself from your own wallet on Etherscan. That takes a few minutes, and it means this site never touches your funds.

Yes, up to 100 per batch. Use the Batch tab, paste addresses or drop a .txt or .csv file, and you get a table you can sort by amount, expand row by row, and export as CSV. The file is read on your device and the CSV is made in your browser: nothing is uploaded. Each address is looked up the same way as a single one: your browser requests one data file per address, and the requests in a batch are visible together. For more than 100 addresses, run several batches.

The dataset is supplied by unlost.money. Part of it comes from the open-source Forgotten ETH index (forgotteneth.com), which lists old contracts that still owe users money. The upstream project describes verifying balances and simulating withdrawals. This interface does not independently verify those claims. Unlost is not affiliated with Forgotten ETH.

Every result shows the block at which it was verified, with its date. Some kinds are re-checked at a recent block (26,294,160, 2026-10-28 22:15 UTC); others show the block of their last verification, which can be older. A balance can change after that: if the Read Contract value differs from the card, trust Etherscan.

No. The lookup runs in your browser, which does not send the address itself. The server sees a request for one of 8,192 data files; the file name narrows the possible listed addresses to the roughly 40 in that file, and candidate lists or other information may narrow them further. We publish no plaintext address list. The page has no analytics code. Like any website, it is served by a hosting provider (Cloudflare) that handles ordinary web requests.

No. Looking up is free, and claiming yourself earns us nothing. You pay only the Ethereum network gas for your own transaction. If a gas fee would be larger than the balance, it is probably not worth claiming right now.

No. Unlost is an independent project. It is not affiliated with, endorsed by or acting for any protocol or company named on this site. We only read their public contracts.

No. It only means we found nothing in the contracts listed under “What we cover”, at the time of the upstream data snapshot. Other chains, other contracts, and balances below $1 are outside this site.