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.

1. Old Mantle v1 withdrawal

   $667 · 1 position

   You withdrew from the old Mantle chain (2023 to March 2024) and the withdrawal never finished on Ethereum. We could not confirm that the current Mantle bridge still finishes pre-upgrade withdrawals.

   1. Open the Mantle bridge and connect the wallet that made the withdrawal.
   2. Find the withdrawal in your history. Current withdrawals need Prove (about 30 minutes), then Claim on Ethereum about 30 minutes later.
   3. If an old withdrawal is not listed, contact Mantle support with the transaction hash.

   Official bridges for the chains your positions are on:

   • Mantle Bridge (opens in a new tab)

   Mantle bridge (opens in a new tab)Official docs (opens in a new tab)

2. Unclaimed OP Stack chain withdrawal

   Blast, Mantle, Mode, Zora, Lisk, Ink, Unichain and other OP chains

   $27 · 1 position

   You withdrew from an OP Stack chain to Ethereum but never completed the last step. The funds wait in that chain's bridge.

   1. Use the official bridge of the chain you withdrew from (linked next to each of your positions).
   2. Connect the receiving wallet and open your transactions. Press Prove, wait out the challenge period shown on the page, then press Finalize.
   3. Pay the Ethereum gas fee each time.

   Official docs (opens in a new tab)

3. K2 (Karak) chain balance

   $5 · 1 positionNeeds the team

   The K2 team's bridge on Ethereum now pays balances by Merkle proof (a list that proves your balance). The merkle root is set and claims are not paused. After 2027-09-12 the guardian can sweep what is left.

   1. Ask the K2 team for your Merkle proof. We could not find an official page that gives proofs.
   2. On the OptimismPortal 0xeeCE9CD7Abd1CC84d9dfc7493e7e68079E47eA73 call claimETH(_amount, _proof) for ETH.
   3. For tokens, call claimTokens(_tokens, _amounts, _proof) on the L1StandardBridge 0xBA61F25dd9f2d5f02D01B1C2c1c5F0B14c4B48A3.

   K2 OptimismPortal on Etherscan (opens in a new tab)

4. Polygon zkEVM balance

   $4 · 2 positions

   Polygon zkEVM's sequencer stopped on 1 July 2026. Wallet-held funds not bridged before then can be claimed on Ethereum in a claim UI. Polygon treats unclaimed assets as abandoned after 2027-12-31.

   1. Open the Polygon zkEVM claims site and connect the wallet that held the funds.
   2. Pick your balances and send the claim transaction on Ethereum.
   3. Funds locked inside DeFi contracts are not auto-migrated. Ask Polygon through the forum post.

   Official bridges for the chains your positions are on:

   • Agglayer bridge UI (opens in a new tab)

   zkEVM claims site (opens in a new tab)Official docs (opens in a new tab)

5. zkSync Lite balance not claimed

   $3 · 3 positions

   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)

6. PoolTogether deposit still in pool

   $2 · 1 position

   You deposited into a PoolTogether v3 or v4 prize pool and never withdrew. Your deposit is still in the pool contract.

   1. Open the prize pool contract (prize_pool address) on the block explorer.
   2. v4: call withdrawFrom(from, amount) with your address. v3: call withdrawInstantlyFrom(from, amount, controlledToken, maximumExitFee).
   3. v3 can charge an early-exit fee. Confirm and check your wallet.

   Official docs (opens in a new tab)