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. Hop transfer not received

   Hop Protocol

   $1,455 · 2 positions

   You sent a Hop transfer long ago and it was never paid out on the destination chain. The funds are still in Hop's bridge contract and its withdraw function still works, but Hop's website and data service are gone, so there is no ready tool: the withdrawal has to be built from on-chain data.

   1. hop.exchange and every address under it (app.hop.exchange, docs.hop.exchange) no longer belong to Hop: hop.exchange now shows a gambling site. Do not open them or connect a wallet there.
   2. Find your transfer in the TransferSent event of your transaction on the origin chain (block explorer, Logs tab). It holds the transfer ID, recipient, amount, transferNonce, bonderFee and the swap values.
   3. The withdraw function also needs a Merkle proof of your transfer. Hop's open-source node tool has a withdrawal-proof command for it, but the tool reads Hop's data service at subgraph.hop.exchange, which no longer answers, so a developer has to point it at another source or rebuild the proof from on-chain events.
   4. With the proof, call withdraw on the Hop bridge contract of the destination chain (block explorer, Write tab) from the wallet that should receive the funds. You pay gas.
   5. On a Layer 2 destination you receive hTokens (for example hUSDC). They can be swapped to the native token in Hop's AMM on that chain.

   Hop's open-source node tool (GitHub) (opens in a new tab)Hop bridge contract (withdraw function) (opens in a new tab)

2. REPv1 never swapped to REPv2

   Augur (REP)

   $13 · 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)

3. MKR never converted to SKY

   Maker / Sky

   $8 · 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)

4. Funds in old Ethereum contracts (2015-2021)

   $5 · 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)

5. NU never swapped to T

   Threshold (NU)

   $5 · 1 positionMay not work

   You hold old NU tokens that were never wrapped into T. The Threshold VendingMachine still does the swap.

   1. Open the NU VendingMachine 0x1CCA7E410eE41739792eA0A24e00349Dd247680e on Etherscan, Write tab, and connect your wallet.
   2. First approve: on the NU token 0x4fe83213d56308330ec302a8bd641f1d0113a4cc call approve(spender = the VendingMachine, amount). Amounts use 18 decimals.
   3. Then call wrap(amount) on the VendingMachine to receive T. Threshold says there is no deadline.

   NU VendingMachine (opens in a new tab)Official docs (opens in a new tab)

6. KEEP never swapped to T

   Threshold (KEEP)

   $4 · 1 positionMay not work

   You hold old KEEP tokens that were never wrapped into T. The Threshold VendingMachine still does the swap.

   1. Open the KEEP VendingMachine 0xE47c80e8c23f6B4A1aE41c34837a0599D5D16bb0 on Etherscan, Write tab, and connect your wallet.
   2. First approve: on the KEEP token 0x85eee30c52b0b379b046fb0f85f4f3dc3009afec call approve(spender = the VendingMachine, amount). Amounts use 18 decimals.
   3. Then call wrap(amount) on the VendingMachine to receive T. Threshold says there is no deadline.

   KEEP VendingMachine (opens in a new tab)Official docs (opens in a new tab)

7. Old SAI stablecoin to cash out

   Maker SAI

   $2 · 1 positionMay not work

   SAI (the first Dai) was shut down. Each SAI can still be cashed for a fixed amount of WETH: 0.0052856 WETH per SAI (read from the contract).

   1. Approve first: on the SAI token 0x89d24A6b4CcB1B6fAA2625fE562bDD9a23260359 call approve(spender = 0xBda109309f9FafA6Dd6A9CB9f1Df4085B27Ee8eF, amount).
   2. Open the SaiTap contract 0xBda109309f9FafA6Dd6A9CB9f1Df4085B27Ee8eF on Etherscan, Write tab, and connect your wallet.
   3. Call cash(wad) with your SAI amount. You receive WETH.

   SaiTap contract (opens in a new tab)

8. MATIC never swapped to POL

   Polygon

   $2 · 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)