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. zkSync Lite balance not claimed

   $53 · 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)

2. MKR never converted to SKY

   Maker / Sky

   $36 · 1 positionMay not work

   You hold MKR, or MKR in the old DSChief voting contract, that was never converted to SKY. The converter still works. Its fee is 5% now (read on-chain 2026-10-01) and rises 1 point every 3 months.

   1. Open the Sky app and connect your wallet.
   2. If your MKR is in the old DSChief voting contract, first call free(amount) on that contract.
   3. Approve MKR, then convert it to SKY. You get 24,000 SKY per MKR minus the fee.
   4. Without the app: call mkrToSky(usr, mkrAmt) on the converter 0xA1Ea1bA18E88C381C724a75F23a130420C403f9a.

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

3. USDC burned but not minted

   Circle CCTP

   $5 · 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. Harmony balance (chain halted)

   $4 · 1 positionNeeds the team

   Harmony proposed (non-binding, 7 Sept 2026) a final snapshot and an ERC-20 ONE airdrop on Ethereum. This list shows positions at the last block our data saw. You cannot sign anything on the chain now.

   1. Do not expect to withdraw this yourself. The chain is halted.
   2. Watch Harmony's official channels for the vote result and the snapshot rules.
   3. Keep access to your wallet. The proposal says the airdrop would go to the same address on Ethereum.

5. Unclaimed OP Mainnet or Base withdrawal

   Optimism, Base

   $3 · 1 position

   You withdrew ETH or tokens from OP Mainnet or Base to Ethereum but never did the last step on Ethereum. The funds wait in the bridge contract.

   1. OP Mainnet: open the Optimism bridge (app.optimism.io/bridge), connect the receiving wallet, open your withdrawal, press Prove, then Finalize after 7 days.
   2. Base: Base's docs list Superbridge and Brid.gg as its bridges. Open one, connect the receiving wallet, find the withdrawal, press Prove, then Finalize.
   3. Base waits 5 days after Prove (1 day if both a TEE proof and a ZK proof back it). Pay the Ethereum gas fee each time.

   Official bridges for the chains your positions are on:

   • Optimism Bridge (opens in a new tab)

   Official docs (opens in a new tab)

6. Archived L2 bridge funds

   Archived L2s

   $2 · 1 positionMay not work

   This chain shut down and its state is gone, so no one can prove a withdrawal now. The Ethereum bridge still holds the money; only the chain team can release it.

   1. Use the official bridge of the chain you withdrew from (linked next to each of your positions).
   2. Check that chain's official site for a refund or recovery notice.
   3. Without the chain's final state nobody can prove a withdrawal. Only the chain team can release the bridge funds.

7. REPv1 never swapped to REPv2

   Augur (REP)

   $1 · 1 positionMay not work

   You hold old REPv1 tokens that were never swapped to REPv2. The REPv2 contract still accepts them.

   1. Approve first: on REPv1 0x1985365e9f78359a9B6AD760e32412f4a445E862 call approve(spender = 0x221657776846890989a759BA2973e427DfF5C9bB, your full REPv1 balance).
   2. Open the REPv2 contract 0x221657776846890989a759BA2973e427DfF5C9bB on Etherscan, Write tab, and connect your wallet.
   3. Call migrateFromLegacyReputationToken(). It moves your whole REPv1 balance and mints REPv2 1 to 1.

   REPv2 contract on Etherscan (opens in a new tab)

8. Seamless v1 deposit on Base

   <$1 · 1 positionMay not work

   You supplied funds to the Seamless v1 lending pool on Base (an Aave v3 fork). seamlessprotocol.com now redirects to X, but the pool contract still lets you withdraw.

   1. Open the pool contract 0x8F44Fd754285aa6A2b8B9B97739B79746e0475a7 on Basescan, Write tab, connect wallet.
   2. Call withdraw(asset, amount, to) with the token address, amount = max (type(uint256).max) and your wallet.
   3. If you have debt, repay() first or withdraw only the free part.

   Seamless v1 pool on Basescan (opens in a new tab)Official docs (opens in a new tab)