AI Protocol

As a lead architect for a decentralized AI application, I need to establish a robust, secure, and transparent communication channel between heterogeneous AI agents operating on the AI Protocol. Design a message passing schema and interaction flow that ensures interoperability between an 'Analytical Agent' focused on market trend prediction and a 'Execution Agent' responsible for automated trading. The communication must be asynchronous, cryptographically signed, and include a clear payload structure for commands (e.g., 'ANALYZE_MARKET', 'EXECUTE_TRADE') and data transfer (e.g., market data feeds, trade signals). Specify the mechanisms for message authentication, integrity checks, and error handling, leveraging the inherent decentralized and transparent features of the AI Protocol. The output should be a detailed outline of the communication protocol, including example message structures in JSON.