Harmony is proposing to sunset its layer-1 blockchain and move the ONE token over to Ethereum. The plan lands weeks after an exploit on the network that led the team to discard 109,000 transactions. If it goes through, Harmony's own chain would effectively be retired.
What the proposal does
The proposal is straightforward in shape: Harmony's own chain would wind down, and ONE would live on Ethereum. For a project that spent years building its own layer-1, that's a quiet admission that the standalone chain isn't the way forward.
It's a proposal, not a done deal. The details of how the migration would work — token swaps, contract addresses, the mechanics of moving balances — are the kind of thing that takes months to sort out even when everyone agrees. The proposal sets the direction; the hard part comes after.
The exploit that changed the timeline
The timing isn't an accident. Weeks ago, an exploit hit the network. The fallout was severe enough that the team decided to discard 109,000 transactions. Wiping that much history isn't a small call; it's the kind of move that only makes sense when the alternative is worse.
That exploit is the backdrop for everything in this proposal. A chain that just got hit and had to throw away a chunk of its ledger isn't in a strong position to argue for keeping its own infrastructure. The proposal reads like a response to that reality.
What ONE holders should watch
For anyone holding ONE, the open questions are practical. How does the migration work? What's the exchange rate? What happens to staking and governance? None of that is answered yet, and it won't be until the proposal moves through whatever approval process Harmony uses.
The other thing to watch is the community reaction. Sunsetting a chain is a hard sell to people who believed in the layer-1 thesis. Some will see this as a surrender. Others will see it as the realistic move after a bad few weeks.
The vote ahead
The next concrete step is a community vote on the proposal. Until that happens, the chain keeps running and ONE keeps trading. If the vote passes, the real work begins — and that's when the migration details actually get hashed out. If it fails, Harmony is back to square one with a wounded network and no clear plan.
