Zano核心团队重启区块链,清除约一个月历史数据
Zano的核心团队已在区块高度3,833,000处重新启动了网络的区块链,删除了大约一个月的历史记录。Zano团队于9月27日(周日)表示,涉及“网关地址”(Gateway Addresses)的漏洞导致未经授权的大量ZANO和自由美元(fUSD)流入市场。

ZANO价格走势图表
数据来源:CoinMarketCap
所选区块位于硬分叉6之前不久,该硬分叉引入了网关地址功能。目前,Zano尚未发布事后分析报告,团队也未公布有关该漏洞的更多技术细节。
网关地址的工作原理
网关地址的设计初衷是为了方便桥接服务、交易所和支付服务与Zano网络进行集成。它允许这些服务通过类似账户式的余额来管理资金,这与其他区块链的做法相似。
在该功能推出之前,普通的Zano钱包将资金追踪为单独的未花费交易输出(UTXOs)。交易所和其他服务提供商必须扫描区块链以查找 incoming payments(传入付款),追踪这些输出,并选择哪些用于提款支出。
Zano于2019年5月作为专注于隐私支付的一层(Layer-1)区块链上线。其标准隐私交易会隐藏发送者、接收者、转账金额以及资产类型。
ZANO is a native token that also allows users to deploy and coin custom digital assets;fUSD is one such token that runs on the Zano blockchain.
Related articles: What is a privacy coin?
Impact of rollback
Restoring to earlier blocks is equivalent to a hard fork, and older software versions cannot follow this change. The recovery process requires update procedures by nodes, miners, pledgers, exchanges and other service providers.
This rollback invalidates legal transactions and unauthorized issuance of tokens within a month, so activity during that period no longer appears on the restored chain. In addition, this operation cannot reverse payments settled on other blockchains.
The team said they are working to account for any losses and will publish the reimbursement and claims process.
Quinten van Welzen, head of marketing and growth at Zano, explained the decision. "Doing nothing means that unauthorized issuance of ZANO and fUSD will flow in the market without restriction, diluting the value of each holder and undermining the currency's most basic promise: a fixed supply." he said.

Part of Van Welzen's statement
Source: X
Van Welzen补充道,如果让这些被利用的代币继续存在,将会向未来的攻击者发出信号,表明利用漏洞获得的代币仍具有价值。他表示,这次重启虽然牺牲了一个月的历史和信任——这是团队必须重新赢回的——但它恢复了持有者最初加入时所期望的供应总量。

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