web3中什麼是資料驗證？誰需要它？

從基礎的預言機到最近的零知識證明，與智能合約連接的無需信任的鏈下基礎設施變得越來越重要

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 應用程式嚴重依賴來自區塊鏈和外部來源的資料來做出關鍵決策，例如清算、保險索賠和貸款批准。然而，確保這些數據的準確性和一致性至關重要，尤其是在將其整合到智能合約中時。這就是數據驗證發揮作用的地方。

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 中的資料驗證涉及證明去中心化應用程式 (dApp) 和智慧合約使用的資料的完整性和正確性的技術和協定。它確保所使用的資料在從來源到應用程式的整個過程中沒有被篡改或以任何方式更改。

Importance of Data Verification in Web3

Web3 中資料驗證的重要性

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

web3 生態系統中有幾個關鍵參與者將從強大的資料驗證解決方案中受益：

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 開發人員：對於開發依賴外部資訊的應用程式的開發人員來說，準確且可驗證的資料至關重要。數據驗證可確保他們的應用程式按預期運行並根據可靠的數據做出決策。

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.

智慧合約審計員：在審計過程中驗證智能合約中使用的數據的準確性至關重要。數據驗證有助於審計人員評估合約是否使用正確的數據，以及是否因錯誤或被操縱的數據而存在任何潛在風險或漏洞。

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 協議：許多 DeFi 協議（例如借貸和衍生性商品平台）嚴重依賴準確且一致的數據來進行清算、價格回饋和選擇權定價等關鍵操作。資料驗證可確保這些協定使用正確的資料來有效地執行這些功能。

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 市場：NFT 市場需要可驗證的數據來準確顯示和追蹤與 NFT 相關的所有權、真實性和元數據。資料驗證有助於維護市場的完整性並確保使用者可以信任所呈現的資訊。

SxT's Proof of SQL for Verifiable Data Queries

SxT 用於可驗證資料查詢的 SQL 證明

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:

滿足資料驗證需求的一個著名解決方案是來自空間和時間的 SQL 證明 (SxT)。它可以在鏈下執行高效且可驗證的資料查詢，確保結果的準確性和完整性。以下是 SQL 證明如何有助於確保資料的正確性和一致性：

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從web3中的主要鏈收集區塊鏈數據，總計近100TB。這個龐大的資料集經過精心策劃和最佳化，可實現高效查詢。

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.

開發人員可以針對 SxT 鏈提交 SQL 查詢，指定他們需要的來自 Era、其他 EVM 鏈或自己的 ZK 鏈的資料。這些查詢可用於檢索任何相關信息，例如代幣餘額、歷史價格或 NFT 所有權記錄。

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 在鏈外執行查詢並產生 ZK 證明，證明結果的準確性和一致性。然後該證明返回到鏈上，並且可以通過任何智能合約進行驗證。

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.

經過驗證的資料查詢可以無縫整合到Elastic Chain生態系統內的各種應用程式中。例如，部署在這些鏈上的合約可以直接呼叫SxT鏈來取得經過驗證的資料。

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:

透過利用 SxT 的 SQL 證明，開發人員可以在 zkSync 上建立高級 DeFi 應用程序，輕鬆整合鏈下資料。一些實際用例包括：

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

從 Era 或其他 EVM 鏈取得歷史價格，為 zkSync 上的去中心化交易所 (DEX) 提供支援。

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

查詢鏈上 Era 資料以評估清算並促進 zkSync 生態系統內的借貸應用程式。

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

跨 Era 和 zkSync 執行複雜的資料聚合，以實現進階交易策略和 DeFi 應用。

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 致力於在零知識證明領域持續創新。由於未來幾年人工智慧代理將主要在鏈上進行交易，SxT 相信防篡改數據和可證明的計算將在增強這些代理和人工智慧模型的能力方面發揮至關重要的作用。