Harmony Plans a Full Rollback to Aug. 11 After Forged ONE Tokens Trigger Major Exploit
TL;DR
- Rollback: Harmony will revert its chain to Aug. 11, discarding over 109,000 transactions after forged ONE tokens appeared.
- Investigation: The protocol traced nearly all unauthorized tokens and is coordinating with exchanges, bridges, and law enforcement.
- Context: The protocol’s move mirrors Ravencoin’s reorganization attempt, showing how networks respond when exploits threaten ledger integrity.
Harmony is preparing a full chain rollback to Aug. 11 after investigators confirmed that forged ONE tokens were minted and circulated, forcing the network to discard more than 109,000 previously confirmed transactions. The decision marks one of the most significant reversions attempted by the protocol, reflecting the severity of the exploit and the risks posed to its ledger integrity.
- Harmony (@harmonyprotocol) August 17, 2026
Rollback Decision and Scope of Discarded Activity
Harmony said validators will revert the chain to blocks recorded at 11:25 pm UTC on Aug. 11, rebuilding the network from that checkpoint using replacement databases. The rollback window includes 109,126 regular transactions and 315 staking transactions, all of which will be removed from the chain’s history.
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