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.