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. USDC burned but not minted

   Circle CCTP

   $5,998 · 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)

2. K2 (Karak) chain balance

   $2 · 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. Splits or Zora rewards not withdrawn

   0xSplits, Zora

   <$1 · 1 position

   Money was sent to you through 0xSplits, or you earned Zora creator or referral rewards, and it is still inside the contract waiting for you to withdraw.

   1. Splits: open SplitMain 0x2ed6c4B5dA6378c7897AC67Ba9e43102Feb694EE on Etherscan and call withdraw(account, withdrawETH, tokens[]) with your address. Anyone can call it.
   2. Zora: call withdraw(to, amount) on ProtocolRewards 0x7777777F279eba3d3Ad8F4E708545291A6fDBA8B (same address on Base and other Zora chains), from the account that earned the rewards.
   3. The Splits app (app.splits.org) can also help.

   Splits app (opens in a new tab)

4. Polygon zkEVM balance

   <$1 · 1 position

   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)