## What Is Space and Time (SXT)? Space and Time is a decentralized data warehouse that brings zero-knowledge verifiability to data processing pipelines used by smart contracts, decentralized applications, and AI agents. Launched in 2022, the protocol allows developers to query both onchain and offchain data and verify results using cryptographic proofs before those results are used in blockchain-based systems. The core innovation behind the protocol is Proof of SQL, a zero-knowledge proof system that enables developers to generate verifiable attestations for standard SQL queries. Proofs are generated offchain and verified by SXT Chain, a Substrate-based blockchain that serves as a decentralized verifier network. Proof of SQL targets sub-second proving time and is purpose-built for low-latency, high-throughput workloads. The protocol supports querying over the full historical state of integrated blockchains and custom data sources. Space and Time uses a hybrid architecture. The SXT token is deployed as an ERC-20 token on Ethereum and functions as the network's native utility token. SXT is used for staking, data processing payments, access control, and incentives for data contributors. On the protocol side, SXT Chain coordinates validator staking, consensus, and zero-knowledge proof verification. Developers interact with the network through Space and Time Studio, a web-based interface that includes SQL tools, dashboards, an AI-powered query assistant, and access to a decentralized data marketplace. Current chain integrations include Ethereum, Bitcoin, Polygon, zkSync, Sui, and Sei, with additional support under development. Space and Time is designed to serve a wide range of applications—from data-driven DeFi protocols and trustless cross-chain analytics to onchain agents powered by large language models. The network allows smart contracts to ask data-driven questions and receive cryptographically verified responses just-in-time for execution. ## How Many SXT Tokens Are There in Circulation? SXT has a fixed total supply of 5 billion tokens, all minted at genesis. At the time of SXT Chain mainnet launch, approximately 28% of the total supply will be in circulation. The initial circulating supply includes tokens allocated for validator rewards, ecosystem growth, and early usage incentives. Remaining tokens are subject to long-term vesting schedules, including those distributed to investors, team members, and advisors. Token emissions and unlocks are governed by a published release schedule managed by the SXT Foundation. ### Who Are the Founders of Space and Time? Space and Time was founded by Nate Holiday, Scott Dykstra, Jay White, and Craig Holiday. Nate Holiday is the CEO of Space and Time. He previously ran global go-to-market and operations for Teradata and served as an SVP at Vista Equity. He also advises Bain & Company and Chainlink Labs. Scott Dykstra serves as CTO. He was previously Vice President of Cloud Engineering at Teradata and has extensive experience in building large-scale distributed systems and developer infrastructure. Jay White is the Head of Research and Co-Founder of Space and Time. He previously worked at Dordt University as an Assistant Professor of Mathematics and Statistics. Jay led the development of the Proof of SQL protocol and now leads the project’s cryptographic and technical research. Craig Holiday is the company’s CFO. He was formerly the CFO and COO of Eleutian Technology and began his career at PwC. He brings over two decades of finance and operational leadership across the technology sector. ### Where Can You Buy Space and Time (SXT)? [Answer not provided.] #### What Makes Space and Time Unique? Space and Time introduces Proof of SQL, a zero-knowledge coprocessor optimized for data, allowing smart contracts to query large-scale datasets and verify the results with sub-second proofs. Unlike general-purpose zkVMs, Proof of SQL is purpose-built for SQL execution, achievi