CryptoCats v2

The March 2018 CryptoCats deployment (contractVersion()==2, predecessor of the v3 marketplace at 0x19c320b4 which references this as previousContractAddress). User claim path: withdraw() drains pendingWithdrawals[msg.sender] — only sellers from buyCat() are credited. The contract holds ~44 ETH but only ~9 ETH is mapped to users; the remaining ~35 ETH was paid in via getCat() calls during 2021 and is stuck — v1/v2's getCat() did not credit pendingWithdrawals[owner], a bug the v3 deployment explicitly fixed ("3.0 — Bug fix to make ETH value sent in with getCat function withdrawable by contract owner"). No admin sweep exists in v2 bytecode (all 45 selectors verified).

Contract: 0x9508008227b6b3391959334604677d60169ef540 · Deployed: March 2018

Check if an address has unclaimed ETH in CryptoCats v2

Unclaimed ETH

9.05 ETH

Addresses

ETH Balance Over Time

Contract Interactions

Balance Distribution

Range	Addresses	Total
1-10 ETH	2	4.25 ETH
0.1-1 ETH	9	4.80 ETH

Frequently Asked Questions

How does it work? ▼

Paste any address or connect your wallet. We check 265 defunct contracts for unclaimed balances. If found, click Withdraw — the transaction goes directly from the original contract to your wallet.

Is this safe? ▼

Yes. Fully open source. No proxy contracts, no intermediaries. Most withdrawals are simple ETH transfers with no approvals needed. A few contracts (e.g. wrapped ETH variants, dividend tokens) require a token burn or two-step process — the UI explains each case. Every withdrawal can be done manually on Etherscan — this site just makes it easier.

Why can't my portfolio tracker see these? ▼

DeBank, Zerion, and Zapper only index active protocols. These contracts are defunct or too obscure to be tracked. Your ETH is still onchain, it just doesn't show up in standard wallet interfaces.

Do you charge fees? ▼

No. Completely free. After a successful claim, there's an optional donation prompt — entirely voluntary.

What contracts are tracked? ▼

265 contracts across defunct DEXes (EtherDelta, IDEX v1, Token.Store), dividend tokens (PoWH3D, Fomo3D), NFT auctions (MoonCatRescue, DADA), bounty platforms, ICO escrows, ENS old registrar deeds, DAO treasury refunds (DigixDAO), and wrapped ETH variants.

Don't trust, verify ▼

You don't need this site to claim. Every withdrawal can be done directly on Etherscan: go to the contract, click "Write Contract", connect your wallet, call the withdraw function. We simply facilitate the crafting of withdrawal transactions on your behalf — each contract's address and function is shown in the claim details. Our code is open source for anyone to audit. Know a contract we're missing? Open an issue.