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. Unclaimed OP Stack chain withdrawal

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

   $3,026 · 2 positions

   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 bridges for the chains your positions are on:

   • Boba Gateway (opens in a new tab)
   • Blast bridge (opens in a new tab)

   Official docs (opens in a new tab)

2. K2 (Karak) chain balance

   $868 · 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)

3. USDC burned but not minted

   Circle CCTP

   $150 · 1 position

   USDC was burned on one chain through Circle CCTP but the matching USDC was never minted on the destination chain. Circle can still sign it, so it can be completed.

   1. Find the burn transaction hash on the source chain.
   2. Get the signed attestation for it from Circle's attestation API (see the Circle CCTP docs).
   3. On the destination chain, call receiveMessage(message, attestation) on the MessageTransmitter contract. You pay the gas fee. USDC goes to the recipient.

   Circle CCTP docs (opens in a new tab)Official docs (opens in a new tab)

4. zkSync Lite balance not claimed

   $40 · 2 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)

5. Ended Sablier stream (no price)

   $0 · 1 position

   An ended or canceled Sablier stream whose token has no known price. Most are airdrop vesting or spam tokens, so the value is unknown and may be zero.

   1. Open the Sablier app and connect the wallet that owns the stream.
   2. Press Withdraw on the ended stream if you want the tokens.
   3. Be careful with unknown tokens: many are spam.

   Sablier app (opens in a new tab)Official docs (opens in a new tab)