web3中的数据验证是什么？谁需要它？Space and Time (SxT) Proof of SQL 如何确保数据的正确性和一致性？

从基础的预言机到最近的零知识证明，与智能合约连接的无需信任的链下基础设施变得越来越重要

Web3 applications heavily rely on data from the blockchain and external sources to make critical decisions, such as liquidations, insurance claims, and lending approvals. However, ensuring the accuracy and consistency of this data is paramount, especially when integrating it into smart contracts. This is where data verification comes into play.

Web3 应用程序严重依赖来自区块链和外部来源的数据来做出关键决策，例如清算、保险索赔和贷款审批。然而，确保这些数据的准确性和一致性至关重要，尤其是在将其集成到智能合约中时。这就是数据验证发挥作用的地方。

Data verification in web3 involves techniques and protocols that attest to the integrity and correctness of data used by decentralized applications (dApps) and smart contracts. It ensures that the data being utilized has not been tampered with or altered in any way throughout its journey from the source to the application.

web3 中的数据验证涉及证明去中心化应用程序 (dApp) 和智能合约使用的数据的完整性和正确性的技术和协议。它确保所使用的数据在从源到应用程序的整个过程中没有被篡改或以任何方式更改。

Importance of Data Verification in Web3

Web3 中数据验证的重要性

There are several key players in the web3 ecosystem who stand to benefit from robust data verification solutions:

web3 生态系统中有几个关键参与者将从强大的数据验证解决方案中受益：

dApp Developers: Accurate and verifiable data is crucial for developers building applications that rely on external information. Data verification ensures that their applications are functioning as intended and making decisions based on reliable data.

dApp 开发人员：对于开发依赖外部信息的应用程序的开发人员来说，准确且可验证的数据至关重要。数据验证可确保他们的应用程序按预期运行并根据可靠的数据做出决策。

Smart Contract Auditors: Verifying the accuracy of data used in smart contracts is essential during the auditing process. Data verification helps auditors assess whether the contracts are using the correct data and if any potential risks or vulnerabilities exist due to faulty or manipulated data.

智能合约审计员：在审计过程中验证智能合约中使用的数据的准确性至关重要。数据验证有助于审计人员评估合同是否使用正确的数据，以及是否因错误或被操纵的数据而存在任何潜在风险或漏洞。

DeFi Protocols: Many DeFi protocols, such as lending and derivatives platforms, rely heavily on accurate and consistent data for critical operations like liquidations, price feeds, and options pricing. Data verification ensures that these protocols are using the correct data to perform these functions effectively.

DeFi 协议：许多 DeFi 协议（例如借贷和衍生品平台）严重依赖准确且一致的数据来进行清算、价格反馈和期权定价等关键操作。数据验证可确保这些协议使用正确的数据来有效地执行这些功能。

NFT Marketplaces: NFT marketplaces require verifiable data to accurately display and track the ownership, authenticity, and metadata associated with NFTs. Data verification helps maintain the integrity of the marketplaces and ensures that users can trust the information being presented.

NFT 市场：NFT 市场需要可验证的数据来准确显示和跟踪与 NFT 相关的所有权、真实性和元数据。数据验证有助于维护市场的完整性并确保用户可以信任所呈现的信息。

SxT's Proof of SQL for Verifiable Data Queries

SxT 用于可验证数据查询的 SQL 证明

One notable solution that addresses the need for data verification is Proof of SQL from Space and Time (SxT). It enables efficient and verifiable data queries to be executed off-chain, ensuring the accuracy and integrity of the results. Here's how Proof of SQL contributes to ensuring correct and consistent data:

满足数据验证需求的一种著名解决方案是来自空间和时间的 SQL 证明 (SxT)。它可以在链下执行高效且可验证的数据查询，确保结果的准确性和完整性。以下是 SQL 证明如何有助于确保数据的正确性和一致性：

SxT collects blockchain data from major chains in web3, amounting to nearly 100TB. This vast dataset is meticulously curated and optimized for efficient querying.

SxT从web3中的主要链收集区块链数据，总计近100TB。这个庞大的数据集经过精心策划和优化，可实现高效查询。

Developers can submit SQL queries against SxT's chain, specifying the data they need from Era, other EVM chains, or their own ZK chain. These queries can be used to retrieve any relevant information, such as token balances, historical prices, or NFT ownership records.

开发人员可以针对 SxT 链提交 SQL 查询，指定他们需要的来自 Era、其他 EVM 链或他们自己的 ZK 链的数据。这些查询可用于检索任何相关信息，例如代币余额、历史价格或 NFT 所有权记录。

SxT executes the queries off-chain and generates a ZK proof attesting to the accuracy and consistency of the results. This proof is then returned on-chain and can be verified by any smart contract.

SxT 在链外执行查询并生成 ZK 证明，证明结果的准确性和一致性。然后该证明返回到链上，并且可以通过任何智能合约进行验证。

The verified data queries can be seamlessly integrated into various applications within the Elastic Chain ecosystem. For instance, contracts deployed on those chains can directly call the SxT chain to obtain proven data.

经过验证的数据查询可以无缝集成到Elastic Chain生态系统内的各种应用程序中。例如，部署在这些链上的合约可以直接调用SxT链来获取经过验证的数据。

By leveraging SxT's Proof of SQL, developers can construct advanced DeFi applications on zkSync that effortlessly integrate off-chain data. Some practical use cases include:

通过利用 SxT 的 SQL 证明，开发人员可以在 zkSync 上构建高级 DeFi 应用程序，轻松集成链下数据。一些实际用例包括：

Fetching historical prices from Era or other EVM chains to power decentralized exchanges (DEXes) on zkSync.

从 Era 或其他 EVM 链获取历史价格，为 zkSync 上的去中心化交易所 (DEX) 提供支持。

Querying on-chain Era data to assess liquidations and facilitate lending applications within the zkSync ecosystem.

查询链上 Era 数据以评估清算并促进 zkSync 生态系统内的借贷应用程序。

Performing complex data aggregations across Era and zkSync to enable advanced trading strategies and DeFi applications.

跨 Era 和 zkSync 执行复杂的数据聚合，以实现高级交易策略和 DeFi 应用。

SxT is committed to continuing innovations in the zero-knowledge proof space. As AI agents are increasingly expected to transact mainly on-chain in the coming years, SxT believes that tamperproof data and provable computation will play a vital role in empowering these agents and AI models.

SxT 致力于在零知识证明领域持续创新。由于未来几年人工智能代理将主要在链上进行交易，SxT 相信防篡改数据和可证明的计算将在增强这些代理和人工智能模型的能力方面发挥至关重要的作用。