Check your wallets · hiddenfunds

Wallet 0x0021…bdfd

Found in this wallet

$6,377

6 positions

By category

Token swaps never done2 positions$5,47386%
Old Ethereum contracts3 positions$88114%
Chains that shut down1 position$23<1%

Findings

Positions found for the checked wallets
Where	Amount		Links
MATIC never swapped to POLPolygon	— MATIC	$5,391	Claim
Funds in old Ethereum contracts (2015-2021)	0.325 ETH	$870	Claim
KNCL never swapped to KNCKyber (KNCL)	600 KNCL	$82	Claim
zkSync Lite balance not claimed	0.008758 ETH	$23	Claim
Funds in old Ethereum contracts (2015-2021)	0.0036582 ETH	$10	Claim

How to get it back

4 guides, the largest amount first

Use only the official links below. No real recovery asks for your seed phrase or private key. If anyone offers to recover funds for you, it is a scam.

MATIC never swapped to POL
Polygon
$5,391 · 1 position
You hold old MATIC on Ethereum that was never swapped to POL. The swap is 1 to 1. Polygon has not announced a deadline.
1. Open the Polygon Portal upgrade page and connect your wallet. Switch the wallet to Ethereum.
2. Approve the upgrade contract to use your MATIC.
3. Confirm the migrate transaction to receive POL. You pay Ethereum gas.
Polygon portal (opens in a new tab)Official docs (opens in a new tab)
Funds in old Ethereum contracts (2015-2021)
$881 · 3 positions
You have a balance in an old Ethereum contract (The DAO, EtherDelta, IDEX, the 2017 ENS registrar, DigixDAO and others). Each contract has its own withdraw call. Use the wallet that owns the position.
1. The DAO: on the DAO token 0xbb9bc244d798123fde783fcc1c72d3bb8c189413 call approve(0xbf4ed7b27f1d666546e30d74d50d173d20bca754, yourBalance). Then call withdraw() on the WithdrawDAO contract 0xbf4ed7b27f1d666546e30d74d50d173d20bca754. It pays 1 ETH per 100 DAO.
2. EtherDelta 0x8d12a197cb00d4747a1fe03395095ce2a5cc6819: from the wallet that deposited, call withdraw(amount) for ETH or withdrawToken(token, amount) for a token. Amounts are in the token's smallest unit.
3. IDEX v1 0x2a0c0dbecc7e4d658f48e01e3fa353f44050c208: call withdraw(token, amount). Use token 0x0000000000000000000000000000000000000000 for ETH. It reverts if your last IDEX activity was fewer than 240 blocks ago.
4. 2017 ENS registrar 0x6090a6e47849629b7245dfa1ca21d94cd15878ef: call releaseDeed(labelhash) for the name. The labelhash is keccak256 of the name without .eth. The deposit goes back to the deed owner.
5. Other contracts (DigixDAO, Neufund and more): use the contract's own withdraw or refund function on Etherscan from the owner wallet. Check the contract's code first.
WithdrawDAO contract (The DAO) (opens in a new tab)Official docs (opens in a new tab)
KNCL never swapped to KNC
Kyber (KNCL)
$82 · 1 position
You hold old KNCL tokens that were never swapped to KNC. The KNC token contract still accepts them.
1. Approve first: on the old KNC token (KNCL) 0xdd974D5C2e2928deA5F71b9825b8b646686BD200 call approve(spender = 0xdeFA4e8a7bcBA345F687a2f1456F5Edd9CE97202, amount).
2. Open the KNC contract 0xdeFA4e8a7bcBA345F687a2f1456F5Edd9CE97202 on Etherscan, Write as Proxy tab, and connect your wallet.
3. Call mintWithOldKnc(amount). It burns your KNCL and mints KNC 1 to 1.
KNC contract on Etherscan (opens in a new tab)
zkSync Lite balance not claimed
$23 · 1 position
zkSync Lite was shut down on 2026-05-04. Remaining balances are claimable on Ethereum through a claim contract and a withdrawal portal. Your account is on that list and has not claimed.
1. Open the zkSync Lite withdrawal portal and connect the wallet that owned the account.
2. The portal finds your address in the final state, builds the proof and sends the claim. Follow its prompts.
3. Confirm the Ethereum transaction. Tokens go to your L1 address. Matter Labs sponsors gas for the first 100,000 withdrawals.
zkSync Lite withdrawal portal (opens in a new tab)Official docs (opens in a new tab)