Zano restarts blockchain with one-month rollback after Gateway Address exploit
Zano has restarted its blockchain after a Gateway Address vulnerability allowed unauthorized ZANO and fUSD into circulation, rolling back roughly a month of transaction history to the height preceding Hard Fork 6.
The Zano network has restarted its blockchain following an emergency rollback that eliminated approximately one month of confirmed transaction history. According to an emergency release published Sept. 27, the chain resumed at block 3,833,000, dated Aug. 26 at 15:50 UTC. Coin Telegraph reported that this point immediately precedes Hard Fork 6, the network upgrade responsible for introducing the Gateway Address feature.[1][4][5]
The rollback was triggered after a vulnerability in Gateway Addresses allowed unauthorized ZANO and Freedom Dollar (fUSD) to enter circulation. CryptoSlate reported that the Zano team plans to finance recovery efforts by tapping into the network's developer fund, team members' personal funds, and contributions from committed supporters. However, the team has not published specific funding amounts, payment timetables, or a guarantee that all losses will be reimbursed. The team noted that ZANO supply and emission remain unchanged, and ordinary transaction privacy and wallet spend keys were not compromised.[1][2][3]
The core team noted that the rollback cannot undo payments that were settled in assets like USDT or DAI on external networks. Node operators, exchanges, and wallet services are currently transitioning to the recovered chain. While an official claims process and technical post-mortem are still pending, Zano advised users to update their wallets, verify payment finality on the recovered chain before resending funds, and preserve all transaction IDs and trade records.[1][4]
Key facts
- A Gateway Address vulnerability allowed unauthorized ZANO and Freedom Dollar (fUSD) into circulation, prompting an emergency blockchain restart.
- The network restarted at block 3,833,000, dating to Aug. 26 at 15:50 UTC, rolling back about one month of transactions to the block height immediately before Hard Fork 6.
- The Zano team plans to finance recovery using developer funds, personal money from team members, and committed contributor support.
- No recovery funding amount or payment timetable has been released, and the team has not guaranteed that all losses will be covered.
- The team stated that ordinary transaction privacy and wallet spend keys were not compromised, and overall ZANO supply and emission remain unchanged.
- The rollback cannot reverse transactions settled on separate blockchains, including payments made in USDT or DAI.
- Users have been advised to update their wallets, verify payment finality on the recovered chain before resending, and retain transaction IDs and exchange records.
Sources · 5 sources
- CR
CryptoSlateArticle ·
Zano rolls back a month of transactions as team plans to use personal funds for recovery Zano’s team says it will draw on the blockchain network’s developer fund, team members’ personal funds and committed contributors to finance recovery from an emergency rollback. The rollback removed roughly a month of previously confirmed transactions from the recovered Zano chain. The team update gives no funding amount or timetable for payments. The team says the network is stable and it is working with partners to verify affected activity. ZANO supply and emission will remain unchanged, it said. The named sources are a funding plan, not a published guarantee that every loss will be covered. Eligibility rules and a claims process have yet to be released. Related Reading TAC blockchain remains frozen for over 10 days after a massive exploit forces a 1.26 billion token bailout Zano’s emergency release , published Sept. 27, restarted the chain from block 3,833,000, which the release dates to Aug. 26 at 15:50 UTC. Transactions recorded on the previous chain after that point are absent from the recovered chain. The core team said a Gateway Address vulnerability had allowed unauthorized ZANO and Freedom Dollar, or fUSD, to enter circulation. It reported no compromise of wallet spend keys or ordinary transaction privacy, while a full post-mortem remains pending. The team also said the rollback cannot undo payments already settled in USDT, DAI or other assets on separate networks. That distinction matters for a swap or trade with a Zano transaction on one side and an external payment on the other. Related Reading Stopping a blockchain doesn't always recover stolen funds – What actually happened when 3 networks pulled the plug What affected users can do Zano says affected users need take no claims action yet; it will publish instructions after working with partners and counterparties. Zano’s verified forum account said no claims process was live in its recent reply and advised users to save transaction IDs plus trade and exchange records. It said users can open a support ticket to put a case on record, but nobody can preapprove a claim before the rules are published. The core team has told users to update their wallets and check a payment’s final status on the recovered chain before resending it. It is supporting exchanges, wallets and payment services as they move over, but each operator must make its own update and announce when ready. Users should confirm a service has adopted the recovered chain before sending funds to or from it. Related Reading Ontology forces urgent node upgrade after restarting chain hit by malicious activity Zano has promised a further update on wallets, services and exchanges and a post-mortem of the Gateway Address flaw. Affected users still need the separate claims instructions to know what records will count and whether the stated funding can cover their losses. The post Zano rolls back a month of transactions as team plans to use personal funds for recovery appeared first on CryptoSlate .
Open source - CR
CryptoSlate@CryptoSlatePost on X ·
Zano’s emergency rollback removed roughly a month of previously confirmed transactions from the recovered chain after a Gateway Address vulnerability. The team plans to fund recovery with developer funds, members’ personal money and contributor support. It has not published funding amounts, claims eligibility or a payment timetable, and has not guaranteed that every loss will be covered. https://t.co/yfIzTZ2UrV
Open source - TB
The Block@TheBlockCoPost on X ·
THE BLOCK: Zano network restarted its blockchain after a Gateway Address vulnerability allowed unauthorized ZANO and fUSD into circulation. The team said it is working with affected projects and counterparties on losses and will publish a reimbursement and claims process. https://t.co/cro6csmeuM
Open source - AI
Analytics Insight@analyticsinmePost on X ·
𝗭𝗮𝗻𝗼 𝗥𝗲𝘀𝘂𝗺𝗲𝘀 𝗢𝗽𝗲𝗿𝗮𝘁𝗶𝗼𝗻𝘀 𝗔𝗳𝘁𝗲𝗿 𝗘𝘅𝗽𝗹𝗼𝗶𝘁, 𝗟𝗮𝘂𝗻𝗰𝗵𝗲𝘀 𝗥𝗲𝗰𝗼𝘃𝗲𝗿𝘆 𝗣𝗿𝗼𝗰𝗲𝘀𝘀 Zano has resumed its blockchain after an exploit involving its Gateway Address feature. The network restarted from block 3,833,000, rolling back approximately a month of blockchain history. Exchanges, nodes, and other network participants are now moving to the recovered chain. #Zano #ZANO #ZanoBlockchain #Crypto #Cryptocurrency #CryptoExploit #CryptoHack #Blockchain #BlockchainSecurity #CryptoSecurity #AnalyticsInsight #AnalyticsInsightMagazine Read More 👇 https://t.co/Pa8372ufPN
Open source - CT
Coin TelegraphArticle ·
Zano rolls blockchain back a month after Gateway Address exploit The Zano blockchain has been restarted at the block height that came immediately before Hard Fork 6, which introduced Gateway Addresses.
Open source