Harmony Moves to Kill Its Own Blockchain, Fold ONE Into Ethereum

A Layer-1 Walks Itself to the Door

Harmony has put forward a proposal to shut down its own layer-1 blockchain entirely, with plans to migrate its native token, ONE, over to the Ethereum network. The move comes just weeks after an exploit forced the project into a separate crisis – one severe enough that developers floated discarding 109,000 transactions outright as part of the fallout response. That two such drastic proposals would surface in rapid succession says something about the state of the network.

The migration proposal, if approved, would mark the end of Harmony as an independent chain.

For a project that launched its own layer-1 infrastructure with ambitions of competing on speed and low fees, the decision to effectively hand the keys to Ethereum is a sharp reversal. Layer-1 blockchains are not cheap to build, maintain, or market – they require validator ecosystems, developer communities, and sustained token utility. Harmony built all of that. The question now is whether its community will vote to dismantle it.

The Exploit That Started the Countdown

The backdrop to this proposal is damage already done. An exploit – the specifics of which shook confidence in Harmony’s bridge infrastructure – triggered a chain of emergency decisions. Among the most striking: a plan to discard 109,000 transactions as part of damage control. Discarding transactions is not a routine network operation. It signals that the integrity of on-chain activity had become difficult to guarantee, and that the development team was operating in a mode closer to triage than maintenance.

That 109,000-transaction figure is worth sitting with. Each transaction represents a user action – a swap, a transfer, a contract interaction – that would effectively be erased from the record rather than settled. Whether those users would be made whole under any recovery plan was not specified in the available details of the proposal, and that gap matters enormously to anyone holding assets on the network.

The exploit and the transaction-discard plan set the table for the migration proposal. When a network has already acknowledged it cannot cle anly resolve its own transaction history, proposing to sunset the chain entirely becomes a more logical next step – even if it is still a drastic one. Harmony appears to be calculating that a controlled migration to Ethereum is preferable to an indefinite attempt to rebuild trust in a compromised layer-1.

What Moving ONE to Ethereum Actually Means

Migrating ONE to Ethereum would transform the token from the native currency of an independent proof-of-stake chain into an ERC-20 asset living on someone else’s infrastructure. That distinction is not trivial. As a layer-1 token, ONE funded gas fees, secured the network through staking, and gave validators a financial reason to participate in block production. As an ERC-20 token on Ethereum, it becomes one of thousands of assets competing for attention on a network Harmony does not control and cannot modify.

Validators would lose their role entirely. Stakers would need to unwrap their positions and convert to whatever the new token format specifies. Developers who built applications natively on Harmony’s chain would face a choice between rebuilding on Ethereum or abandoning their projects. The migration, in other words, does not simply relocate the token – it collapses the entire stakeholder structure that made Harmony a distinct network.

Ethereum, for its part, would absorb ONE as it has absorbed dozens of other migrated or bridged assets – without any particular ceremony. The Ethereum network does not change to accommodate incoming projects. Harmony would be adapting entirely on Ethereum’s terms, accepting its fee structure, its congestion patterns, and its governance dynamics. Whether the ONE token retains meaningful utility in that environment depends on what use cases Harmony can construct around it post-migration.

A Community Decision With No Clean Outcomes

The proposal still requires community approval, which means ONE holders and validators will ultimately decide whether Harmony shuts down its layer-1. That governance process is itself complicated by the aftermath of the exploit – some portion of the community is likely dealing with losses, and their appetite for a controlled wind-down versus a recovery attempt may differ sharply from long-term holders who simply want to preserve token value. The 109,000 transactions that were proposed for discard represent real users with real stakes in how this plays out, and their voice in any governance vote is an open variable.

What happens to the Harmony layer-1 if the community rejects the migration proposal is the question no one has cleanly answered yet.