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NFT交易市场竞争者？一文读懂NFT AMM 协议SudoSwap 的运作模式
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介绍
SudoSwap 是一家以点对点、0 手续费掉期而闻名的 NFT 交易所，最近发布了其用于 NFT 的 AMM（自动做市商）。 这引起了很多炒作，但也引起了相当大的混乱，并导致人们提出诸如“那为什么这不只是另一个 NFT 市场？”之类的问题，所以这篇文章的目标是帮助人们消除这种困惑。
在我们开始之前，这些是您应该了解 SudoSwap AMM 模型的原因：
NFT 交易所：订单簿与 AMM
你可能已经习惯的大多数 NFT 市场，如 OpenSea 和 LooksRare，都是依靠链外订单簿来促进高效交易。为了帮助你理解这意味着什么，让我们看一个例子：
你想以 100ETH 的价格出售一只无聊猿（BAYC），于是去一个像 OpenSea 这样的交易所挂牌出售。 OpenSea 让你用你的钱包签署一个信息，表示你想以 100ETH 的价格出售该 BAYC。 您签署的订单被存储在链下订单簿中，由交易所托管在数据库中，并显示在他们的界面上（并通过他们的 API 公开），供潜在买家浏览。 您的订单会一直放在那里，直到它被购买或者您决定取消它。
这种模式有个优点：用户不需要支付 Gas（在最初批准交易所合同来移动他们的 NFT 后）来上架或投标 NFT，Gas 只为执行而支付。
缺点是：a）交易所在链外托管整个订单簿，这可能会使获得所有订单变得更加困难，一些开发者在获得 OpenSea API 密钥时遇到的问题就是证明；b）所有的定价必须是 "主动的"；你不能指定如 "如果我的第一个 NFT 以 1ETH 的价格出售，则尝试以 1.3ETH 的价格出售下一个"。在一个基于订单簿的交易所，你的列表需要手动调整（除非你足够信任交易所，把你的私钥给他们，让他们为你取消/签署新的订单 ）。
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