Developer Renames Protocol to ATC After Discovering ACP Already Exists

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A developer who published an article about a protocol called ACP discovered shortly after that the name was already taken by an existing IBM/BeeAI project. In response, they promptly rebranded their protocol as ATC, short for Agent Trust Card. Unlike ACP, which focuses on agent-to-agent messaging, ATC is designed as an identity, trust, and payment layer for AI agents. It features Ed25519 cryptographic identity, end-to-end encryption, a Sentinel-based trust scoring system, protocol translation, and USDC payment escrow. The developer described ATC as functioning similarly to SSL certificates for agents, and the full specification has been published at marketnow.site/atc-spec.json.

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