Zano Rolls Back Blockchain After Gateway Address Exploit

Zano, a layer-1 blockchain focused on private payments, has rolled back roughly a month of its blockchain history after identifying a vulnerability tied to 'Gateway Addresses.'

The issue allowed unauthorized ZANO and Freedom Dollar (fUSD) tokens to enter circulation, prompting the project's core team to restart the network at block 3,833,000, immediately before Hard Fork 6.

According to Zano's head of marketing and growth, Quinten van Welzen, restarting the chain from before Hard Fork 6 carried costs, including the disappearance of about a month of transaction history.

The rollback removes both legitimate transactions from that window and the unauthorized tokens, but payments already completed on other blockchains cannot be undone, limiting how far the recovery can reverse real-world settlement.