Codatta is a decentralised, multi-chain data protocol that converts curated knowledge and blockchain metadata into tokenised assets. It blends human input with AI to source, verify and maintain datasets through a staged workflow with automated checks and community review. The XnY framework organises information as X-Data for entity context, Y-Data for task outputs, and Frontier Data that combines both for domain knowledge. XNY is used within the ecosystem to access and trade data assets, to stake for data validation and governance, to reward accepted contributions, and to support cross-chain activity. Governance and incentives are reputation-weighted, with safeguards against inaccurate or malicious inputs.