Harmony Plans to Shut Down Mainnet After 7 Years, Move ONE to Ethereum

Harmony is discontinuing its standalone mainnet after seven years of operation and migrating its ONE token to the Ethereum blockchain. The shift reflects broader industry trends toward consolidation, with the project pivoting its infrastructure rather than maintaining an independent chain. Harmony's decision underscores how projects are reassessing the viability of standalone layer-1 networks in a landscape increasingly dominated by established chains and emerging technical pressures.

The shutdown carries implications for token holders and developers who will need to navigate the migration process. The move also points to evolving considerations around blockchain security and network sustainability that are reshaping how projects make infrastructure choices.

• Harmony is sunsetting its mainnet and moving ONE to Ethereum, marking a significant pivot after the chain's seven-year run as an independent network.
• The decision reflects growing pressure on standalone blockchains to consolidate or demonstrate compelling value propositions against established layers.
• Token holders will face migration requirements, making the transition's execution and clarity for users a critical test of the project's execution.