How to Prepare Your Harmony ONE Wallet for the Ethereum Migration

Harmony has proposed shutting down its Layer 1 network and moving ONE to Ethereum, with a final-block snapshot intended to determine replacement token balances. The proposal is not yet a completed migration, but there is one immediate issue for users: Harmony says multisignature wallets, liquidity pools, and on-chain applications cannot be migrated automatically, and it has urged users to exit smart contracts before September 10, 2026.

What Harmony is proposing and why the deadline matters

Harmony's plan would retire the network launched in 2019 and reissue ONE as an Ethereum-based ERC-20 token. An ERC-20 token is a standard Ethereum token that can be held and transferred by compatible wallets and applications. Under the proposal, Harmony would take a snapshot at the final Harmony block and use it to determine allocations for wallets, staking positions, validator rewards, smart contracts, and centralized exchanges. 

The important distinction is between assets sitting directly in a wallet and assets locked inside another on-chain system. Harmony says ordinary wallet balances are intended to be covered by the snapshot, while multisignature safes, liquidity pools, and on-chain applications cannot be migrated. That is why simply leaving every ONE position untouched is not a safe assumption. 

First check whether your ONE is in a smart contract

Before moving anything, identify where your ONE actually sits. A normal wallet balance is controlled directly by your wallet keys, while a smart contract position is controlled by blockchain code that may represent staking, liquidity provision, lending, farming, or another application. Open your wallet and review its token balance, then separately check any DeFi positions you have opened. Do not treat a wallet's displayed total as proof that every token is sitting in the wallet itself.

1. Open the wallet you use for Harmony and record its current ONE balance.
2. Review every staking, liquidity, farming, lending, or contract position connected to that wallet.
3. Identify which positions can be withdrawn back to a normal wallet balance.
4. Check the transaction history after each withdrawal so you can confirm the position has actually closed.

The result you want is simple: any ONE you control directly should be visible as a normal wallet balance rather than as an application or liquidity position. Harmony's proposal specifically warns that smart-contract positions that cannot migrate are different from ordinary wallet holdings. 

Withdraw liquidity before the proposed cutoff

If you supplied ONE to a liquidity pool, the token is represented inside a decentralized exchange contract rather than sitting entirely in your wallet. Withdraw the liquidity according to the pool's normal procedure and wait for the transaction to confirm. You may receive more than one asset back, depending on the pool, so check the resulting balances rather than looking only for ONE.

This step matters because Harmony's proposal says liquidity pools cannot be migrated automatically. The reported deadline for exiting smart contracts is September 10, 2026, so waiting until the last few hours creates unnecessary risk from congestion, failed transactions, or an application becoming unavailable.

Unstake ONE if you have delegated it

Staking is different from simply holding ONE because the tokens are associated with a validator and delegation state. Harmony's proposal says delegated stakes and unclaimed rewards would be handled through governance-related destinations rather than being treated exactly like an ordinary wallet balance. If you want direct control over your tokens before the transition, review the available undelegation process and its waiting period rather than assuming an instant withdrawal is possible. 

Do not start an undelegation transaction blindly just because a migration is being discussed. First check the current validator and staking interface, confirm the transaction details, and make sure the resulting balance will return to an address you control. The proposal remains non-binding, so its final implementation can still change.

Do not manually bridge ONE to Ethereum

The proposed migration is not the same thing as using a normal token bridge. Harmony says replacement ONE would be distributed on Ethereum according to the final snapshot, with the replacement tokens going to the corresponding wallet addresses. The proposal also says holders would not need to submit a claim.

That means users should be especially careful with websites or messages telling them to connect a wallet and manually swap, bridge, or claim replacement ONE before the official migration mechanism exists. A migration announcement does not make an unknown claim page legitimate. Until the final contracts and procedures are published and verified, keep your recovery phrase private and do not approve unfamiliar token contracts.

Be careful with multisignature wallets

A multisignature wallet, often called a multisig, requires approval from multiple authorized keys before a transaction can execute. Harmony has specifically identified multisig safes as positions that cannot be migrated automatically under the proposal. If you manage ONE through a multisig, the normal single-wallet instructions therefore do not cover your situation. 

The practical task is to determine who controls the multisig, what assets it holds, and whether those assets can be moved to a normal wallet before the proposed cutoff. Because this can require several signers, waiting until September 10 could leave too little time to complete the transaction safely. Treat multisig holdings as a separate migration case rather than assuming the final snapshot will solve it.

Keep evidence of your balance and transactions

Before making changes, save a private record of your ONE balance, staking positions, liquidity withdrawals, and transaction identifiers. A transaction identifier is the unique value that lets you verify a blockchain transaction independently of the wallet interface. This record is useful if the migration process later requires you to reconcile a balance or investigate a missing position.

For example, if you withdraw ONE from a liquidity pool today, record the withdrawal transaction and the resulting wallet balance after confirmation. Do the same for an unstaking operation if you use one. This does not guarantee a particular migration allocation, but it gives you a clear audit trail instead of relying on screenshots or memory.

What happens to a normal ONE wallet under the proposal

For users who simply hold ONE in a standard wallet, the proposed process is considerably simpler. Harmony says the final block would provide the snapshot used for allocation, and replacement ONE on Ethereum would be sent to the same wallet addresses without requiring a separate claim. The token's total supply and issuance rate are also proposed to remain unchanged, although the final implementation is still subject to the proposal process. 

That does not mean you should move your ONE to an unfamiliar Ethereum address yourself. The safer approach is to retain control of the wallet's recovery credentials, avoid unsolicited migration links, and wait for the official token contract, snapshot calculations, and distribution mechanism to be published and independently checked. Harmony has said those migration components are intended to be made public for audit. 

What you should do before September 10

• Check whether your ONE is held directly in a wallet or inside a smart contract.
• Withdraw liquidity positions that contain ONE if the position is eligible for withdrawal.
• Review staking and delegation positions and understand their withdrawal conditions.
• Handle multisignature holdings separately because they are not covered by automatic migration.
• Record important transaction identifiers and balances for your own records.
• Do not connect your wallet to an unofficial migration or claim page.
• Do not manually bridge or swap ONE simply because a third party says it is required.

The September 10 date is particularly relevant to smart-contract positions, not proof that every part of the migration will be finalized on that date. Harmony's proposals are non-binding and can still change, while the migration mechanism itself is supposed to be defined through the final contracts, snapshot calculations, and related implementation details. 

What to watch after you have secured your position

Once your ONE is back in a wallet you control, the main job changes from moving tokens to verifying information. Watch for the final governance decision, the confirmed final-block timing, the official Ethereum token contract, the published snapshot methodology, and the distribution mechanism. Do not judge an announcement by a token price or a social-media screenshot; verify the contract and migration rules before approving any transaction.

The key lesson from this transition is that a blockchain migration is not automatically safe for every type of position. A simple wallet balance, a staking delegation, a liquidity pool, and a multisig can all represent the same token while requiring very different actions. If Harmony proceeds with the proposal, users who have already separated their direct holdings from contract-controlled positions will be in a much better position to verify what the final snapshot actually contains.