Harmony plans to roll back its blockchain to Aug. 11, discarding more than 109,000 transactions following an exploit that resulted in the creation of forged ONE tokens.
Validators will revert to blocks recorded at 11:25 p.m. UTC on Aug. 11, with new blocks produced from subsequent heights using replacement databases. The rollback will discard 109,126 regular transactions and 315 staking transactions.
Harmony said selective transaction restoration was unsafe. Attempting to restore transactions individually would create an inconsistent chain state, with mismatched balances, contract states and nonces that could destabilize the network.
The unauthorized ONE token minting emerged last week, with forged tokens subsequently sent to various exchanges. Investigators have traced nearly all forged tokens to specific wallets or service boundaries. Harmony is coordinating with exchanges, bridges and law enforcement agencies on recovery efforts.
At the time of the assessment, Harmony's native token ONE had a market capitalization of approximately $10.8 million.
The move places Harmony alongside Ravencoin among blockchain networks that have reversed confirmed on-chain activity after security exploits. Ravencoin faced a potential three-day reorganization following exploitation of a consensus flaw, when mining pools controlling most of its hash rate began building a competing chain to reverse previously confirmed transactions.
