Itheum is a decentralized, cross-chain data brokerage platform that empowers individuals and businesses to own and trade their data in the Web3 and Metaverse. It offers a suite of tools including a Data NFT marketplace, decentralized data exchange, peer-to-peer data trade, data coalition DAOs, and data adaptors. Users can mint their data as NFTs, trade data subscriptions, and access high-value data and insights through primary and secondary data markets. Itheum also provides tools for data collection, analytics, reputation management, and privacy-preserving computation.