Zano developers have erased a month of blockchain transactions to contain a vulnerability. They say personal and contributor funds will help users recover, but who qualifies and when payouts will happen is still unclear.
Zano's blockchain has lost about a month of confirmed transactions. Developers erased this history after finding a vulnerability that let unauthorized tokens slip into circulation. The team now says it will use not just the developer fund, but also personal and contributor money to help users hit by the rollback. Still, there is no promise that every loss will be covered.
Rollback and user impact
The emergency rollback started with a release on September 27. The chain was reset to block 3,833,000, wiping out all transactions after August 26 at 15:50 UTC. Any ZANO or Freedom Dollar (fUSD) transfers, swaps, or trades confirmed after that point are now gone from the active ledger. The team blames a Gateway Address vulnerability, which let attackers create unauthorized ZANO and fUSD. They say wallet spend keys and normal transaction privacy were not affected. A full technical post-mortem is still on the way.
The Zano rollback invalidated more than 109,000 legitimate transactions, erasing nearly four weeks of blockchain history to contain the exploit.
Funding recovery and unanswered questions
To help users recover, Zano's core team says it will use the project's developer fund, plus personal money from team members and contributors. But they have not said how much money is available or when payments might start. The team says eligibility rules and a formal claims process will come later, after more talks with partners and counterparties. For now, users should save their transaction IDs and trade records. They can open a support ticket to document their case, but no claims will be approved until the rules are set.
Network stability and service migration
The Zano team says the network is now stable. They are working with exchanges, wallets, and payment services to move to the recovered chain. Each provider must update their systems and announce when they are ready before users can safely send or receive funds. Users should check that a service has switched to the recovered chain before making any transactions. They should also update their wallets and check the final status of any payment on the new chain before trying to resend. The rollback does not affect payments already settled in USDT, DAI, or other assets on outside networks. This is important for users who swapped ZANO for assets outside the Zano ecosystem.
The rollback was coordinated through a network upgrade tied to Hard Fork 6, requiring all nodes, miners, stakers, and exchanges to adopt the update to follow the recovered chain. Gateway Addresses remain offline as the team continues its review, and a full technical post-mortem has not yet been published.
Ongoing uncertainty for affected users
The Zano team has promised more updates on wallet and service migration, and a detailed post-mortem on the Gateway Address flaw. But users are still waiting for the claims process. The team has not promised to cover every loss, and the full number of affected transactions is still being checked with partners. The supply and emission schedule for ZANO will not change, according to the team.
Other crypto platforms have faced similar incidents, sometimes freezing withdrawals or changing user balances. This happened with Bitget's XRP withdrawal freeze after a major hack, as reported earlier.
After the rollback, all transactions after block 3,833,000 are missing from the Zano chain. The team says the rollback cannot undo payments already settled in assets like USDT or DAI on other networks. No numbers have been published on how many users were affected or the total value of lost or invalidated transactions. The funding plan is still just a proposal, not a guarantee, and there is no timeline for user reimbursement.
When a blockchain rolls back, the network's history is rewritten to an earlier state. All later transactions are wiped out. This can stop the spread of unauthorized tokens or fix major errors, but it also breaks the idea of immutability that most public blockchains rely on. For users, a rollback can mean lost funds, broken swaps, or the need to check balances and transaction history all over again. Whether recovery works depends on how open the claims process is, how much money is available, and whether service providers help with the migration. Until these details are clear, users are left uncertain about the fate of their assets.
