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PCM: A Proof-Carrying Message Protocol for Verifiable Multi-Agent Communication
and-scienceartificial-intelligencecomputational-engineeringcryptography-and-securityfinancemultiagent-systems
When one AI agent tells another that "the tests passed" or "a person approved this refund", the receiver has only the sender's word. A2A and MCP authenticate the channel, but the sender is the party in doubt, so a prompt-injected agent can launder fabricated facts and authority through a multi-agent
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