Revoke Token - 在危险的加密货币市场中保护您的资产的工具

Web3 和 DeFi 市场总是充满危险，即使是老手也会犯下载入史册的黑客错误。

The Web3 and DeFi markets are always full of dangers that even veterans make mistakes with historical hacks, losing all their assets with just a few clicks, and gaining knowledge is one of the ways to prevent themself to protect their own assets in this market. Revoke token will be a tool to help protect your assets from the most dangerous and powerful hackers. Let's find out about this tool with Allinstation!

Web3 和 DeFi 市场总是充满危险，即使是老手也会因历史黑客攻击而犯错误，只需点击几下就失去所有资产，而获取知识是防止自己在这个市场保护自己资产的方法之一。撤销代币将成为帮助保护您的资产免受最危险和最强大的黑客攻击的工具。让我们通过 Allinstation 来了解一下这个工具吧！

What is Revoke Token?

什么是撤销令牌？

Revoke is the act of withdrawing or canceling the rights that the user has granted to the smart contract to sign transactions, access and interact with assets in the crypto wallet. When performing an action on a decentralized financial application (dApp) such as lending, farming, swap token, the user needs to authorize the smart contract. After the transaction is completed, the user can revoke to cancel the dApp's access rights, ensuring that the applications cannot use the assets without permission.

撤销是撤回或取消用户授予智能合约的签署交易、访问加密钱包中的资产并与之交互的权利的行为。当对去中心化金融应用程序（dApp）执行操作（例如借贷、农业、交换代币）时，用户需要对智能合约进行授权。交易完成后，用户可以撤销取消dApp的访问权限，确保应用程序无法未经许可使用资产。

The development process and purpose of Revoke Token?

Revoke Token的开发流程和目的？

Paul Berg was the first to recognize the importance of Revoke and described how to do it at Devcon 5. Later, Zapper.fi, Curve.fi, and Uniswap came up with alternative solutions, but they still had many problems such as high costs and limited number of blockchains. Finally, dedicated tools for Revoke like Unrekt, Revoke.cash and Cointool were born.

Paul Berg 是第一个认识到 Revoke 重要性的人，并在 Devcon 5 上描述了如何做到这一点。后来 Zapper.fi、Curve.fi 和 Uniswap 都提出了替代方案，但仍然存在成本高、成本低等诸多问题。区块链数量有限。最后，Unrekt、Revoke.cash 和 Cointool 等 Revoke 专用工具诞生了。

Revoke has three main purposes:

撤销有三个主要目的：

Why do we need to perform Revoke Token?

为什么我们需要执行Revoke Token？

Revoke is an important security measure to prevent unauthorized access to users' cryptocurrency assets and minimize security risks. According to the SlowMist Hacked report, in the first half of 2022, the crypto market experienced 187 security incidents, causing losses of 1.976 billion USD, mainly due to buggy smart contracts or attacks by hackers. Here are three important reasons to perform Revoke:

撤销是防止未经授权访问用户加密货币资产、最大程度降低安全风险的重要安全措施。据慢雾黑客报告显示，2022 年上半年，加密货币市场发生了 187 起安全事件，造成了 19.76 亿美元的损失，主要是由于智能合约缺陷或黑客攻击造成的。以下是执行撤销的三个重要原因：

Minimize security risks

最大限度地降低安全风险

Protect privacy rights

保护隐私权

Control assets

控制资产

An example of the risk of not Revoking

不撤销风险的示例

In October 2020, John Doe saw a dApp called UniCats. After depositing UNI and approving the request “Allow this Dapp to spend your UNI” from Metamask, he farmed $MEOW and thought he had earned enough. However, UniCats is a scam website and John's Allow action gave UniCats full access to his UNI, resulting in a total loss of 36K UNI (1 million USD) while he was sleeping. If John had known about Revoke sooner, this loss could have been avoided.

2020 年 10 月，John Doe 看到了一个名为 UniCats 的 dApp。在存入 UNI 并批准 Metamask 的“允许这个 Dapp 花费你的 UNI”的请求后，他种植了 $MEOW，并认为他已经赚到了足够的钱。然而，UniCats 是一个诈骗网站，John 的“允许”操作使 UniCats 能够完全访问他的 UNI，导致他在睡觉时总共损失了 36K UNI（100 万美元）。如果约翰早点知道撤销的事，这种损失本来是可以避免的。

What is Token Approval?

什么是令牌批准？

Token Approval is the right that users grant to DApps so that they can access the tokens in the user's crypto wallet. DApps use smart contracts to perform transactions on the blockchain, and users can only spend tokens through these contracts once they have granted them permission.

通证批准是用户授予DApp的权利，以便他们可以访问用户钱包中的通证。 DApp 使用智能合约在区块链上执行交易，用户只有在获得许可后才能通过这些合约花费代币。

Important note:

重要提示：

When did Token Approval get noticed?

令牌批准何时引起注意？

The cryptocurrency and DeFi markets are developing rapidly along with investment and employment opportunities. However, the risks of losing money, fraud and scams are also increasing. Each time they participate in depositing money on a dApp, users must set the allowance for the exact amount of money that the dApp can access. Some applications request an unlimited allowance (no limit on the amount of money allowed), and when approved, the user only needs to approve it once. Setting up the said unlimited allowance will be less risky when everyone fully understands the dApp being used, or it has been verified. If encountering unverified applications, everyone has only heard about them for the first time, then this is not the right choice. However, this setting can lead to risks if the system encounters a bug or the dApp is hacked.

加密货币和 DeFi 市场随着投资和就业机会的快速发展。然而，损失金钱、欺诈和骗局的风险也在增加。每次在 dApp 上存钱时，用户都必须设置 dApp 可以访问的确切金​​额的限额。有些应用程序要求无限制（允许的金额没有限制），并且在批准后，用户只需批准一次。当每个人都充分了解正在使用的 dApp 或已经过验证时，设置上述无限限额的风险会较小。如果遇到未经验证的应用程序，大家都只是第一次听说，那么这不是正确的选择。但是，如果系统遇到错误或 dApp 被黑客攻击，此设置可能会带来风险。

Popular Revoke Token tools

流行的撤销令牌工具

A guide to using Revoke Token with the Metamask wallet

将 Revoke Token 与 Metamask 钱包一起使用的指南

Instructions on how to Revoke directly on the Ethereum Blockchain

有关如何直接在以太坊区块链上撤销的说明

Step 1: Visit https://etherscan.io/tokenapprovalchecker and connect your wallet

第1步：访问https://etherscan.io/tokenapprovalchecker并连接您的钱包

Step 2: Select the Token standard you want to revoke, here we will have ERC-20, ERC-721, ERC-1155

步骤2：选择您要撤销的Token标准，这里有ERC-20、ERC-721、ERC-1155

Step 3: Click revoke and sign to confirm the action on the wallet

第三步：点击撤销并签名以确认钱包上的操作

Some questions related to Revoke

关于撤销的一些问题

Does Revoke affect DeFi activities?

撤销会影响 DeFi 活动吗？

No! Revoke does not affect any of the user's DeFi strategies but is only an action to minimize the risks coming from the Dapp that the user is using.

不！撤销不会影响用户的任何 DeFi 策略，只是为了最大限度地降低用户正在使用的 Dapp 带来的风险而采取的行动。

Is Disconnect necessary to revoke the token anymore?

是否需要断开连接才能撤销令牌？

Disconnect only cancels the permission for dApp to view the wallet address and asset balance, not protecting assets like Revoke. The answer here is that you still need to revoke

Disconnect只是取消dApp查看钱包地址和资产余额的权限，并不能像Revoke一样保护资产。这里的答案是你仍然需要撤销

Do Token Approval rights expire automatically?

令牌批准权会自动过期吗？

No! Token Approval rights work permanently unless the user performs a Revoke

不！除非用户执行撤销，否则令牌批准权限将永久有效

In conclusion

综上所述

Revoke token is one of the activities that any user must know when starting to enter the DeFi world. Keeping your assets safe is a top priority to avoid any unfortunate losses due to scam dApps or being

撤销代币是任何用户在开始进入 DeFi 世界时必须了解的活动之一。确保您的资产安全是首要任务，以避免因诈骗 dApp 或被盗而造成任何不幸损失