# F2Pool创始人神鱼提示X2Y2 NFT挂单挖矿存在风险 **Published by:** [hecate](https://paragraph.com/@picometaverse/) **Published on:** 2022-02-21 **URL:** https://paragraph.com/@picometaverse/f2pool-x2y2-nft ## Content F2Pool创始人神鱼在推特表示,目前市场火热的X2Y2 NFT挂单挖矿存在以下风险:用户NFT授权的是 0xf849de01b080adc3a814fabe1e2087475cf2e354 ERC721Delegate 合约,该合约有RBAC的权限管理;交易Exchange合约 0x74312363e45dcaba76c59ec49a7aa8a65a67eed3 拥有通过ERC721Delegate合约转移用户token的权限;交易Exchange合约 是可升级合约,升级权限(proxyAdmin的owner)是官方单地址;理论存在官方通过升级合约,然后转走用户NFT的可能。 ## Publication Information - [hecate](https://paragraph.com/@picometaverse/): Publication homepage - [All Posts](https://paragraph.com/@picometaverse/): More posts from this publication - [RSS Feed](https://api.paragraph.com/blogs/rss/@picometaverse): Subscribe to updates