Harmony investigates reported 4B ONE unauthorized mint as ONE crashes and rollback considered

Harmony is investigating a reported unauthorized mint of ONE tokens, with multiple outlets citing an alleged 4 billion ONE minted after suspected exploit activity. CoinDesk reported ONE fell about 26% as the tokens were reportedly created and moved, and said Harmony was working with exchanges to freeze funds while preparing a software fix ^[1].

Cointelegraph said Harmony is considering a rollback after claims that billions of unauthorized ONE were sent to trading platforms, and Crypto.news reported Harmony was probing the reported 4B ONE mint as ONE price dropped. Coinpedia similarly described the event as a 4 billion ONE mint and noted the impact on price ^{[2] [3] [4]}.

Across reports, Harmony has not yet publicly confirmed the root cause or the precise amount affected, but it has indicated it is coordinating with exchanges to stop trading of implicated tokens and is evaluating remedies including a rollback ^{[5] [2] [1]}.

Harmony said it is freezing assets with exchanges and preparing a patch as it reviews claims of a large unauthorized ONE mint and evaluates whether a rollback is needed ^{[1] [2]}.