The Zano blockchain has been rolled back to the block height just before Hard Fork 6, which introduced Gateway Addresses. This action was taken in response to a security exploit related to the new Gateway Address feature, according to CoinTelegraph.
By restarting the blockchain at this earlier point, Zano aims to mitigate the impact of the exploit and secure the network. The rollback effectively removes the changes brought by Hard Fork 6, restoring the blockchain to its previous state.
For Japanese investors and traders, this incident highlights the ongoing risks associated with blockchain upgrades and the importance of monitoring protocol changes in crypto assets traded on regional and global platforms.