Harmony is officially shutting down its native blockchain infrastructure, originally launched in 2019, and migrating the ONE token to the Ethereum ecosystem as a standard ERC-20 asset. For current token holders, the transition is designed to be automatic, moving assets to the new Ethereum-based contract without requiring manual swaps for users holding funds on supported exchanges or compatible wallets. This move marks the end of Harmony’s tenure as an independent Layer 1 protocol, with node validators scheduled to begin decommissioning their hardware this Thursday.
The project leadership cited unprecedented security challenges as the primary driver for the shutdown, specifically highlighting sophisticated attacks from state actors and the rise of malicious AI agents targeting the chain's consensus mechanism. In a 2026 landscape where blockchain security is increasingly tested by automated threats, the Harmony team determined that leveraging Ethereum’s robust security layer was a more viable path forward than maintaining a standalone network. This pivot mirrors a broader market trend where mid-tier Layer 1 networks are opting to exit the infrastructure race to become asset clusters on more secure foundations.
From a regulatory and market perspective, this transition simplifies Harmony's operational footprint but underscores the intense pressure on legacy protocols to survive in a consolidated environment. Investors should monitor their exchange wallets and self-custody interfaces for the arrival of the new ERC-20 ONE ticker. While the automated nature of the migration reduces user friction, holders must remain vigilant against phishing attempts and fraudulent "claim" sites that typically emerge during network migrations.
Looking ahead, the market will be watching to see if other struggling Layer 1 blockchains follow the lead of Harmony and BounceBit in abandoning native chain operations. The immediate impact on ONE’s price remains volatile as the market digests the loss of its utility as a native gas token against the potential for increased liquidity within the Ethereum ecosystem. The decommissioning of nodes on Thursday will serve as the final technical milestone for the original Harmony mainnet.