According to Cointelegraph, an exploiter created 36.9 million unauthorized ZANO coins prior to a blockchain rollback.
The unauthorized coins were indistinguishable from legitimate ZANO tokens at the time they were generated, which prevented the development team from distinguishing or removing them through standard protocol mechanisms.
Because the coins could not be identified as fraudulent under normal validation rules, the team opted to roll back the blockchain to a prior state before the unauthorized issuance occurred.
The rollback was necessary to restore consistency with only valid, authorized ZANO tokens in the chain’s history. No further details were provided regarding timing, technical method of creation, or post‑rollback verification steps.
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