Infrastructure · Identity · Cryptography
AI Agent Identity Verification: Cryptographic Frameworks
Before merchants accept payments from AI agents, they need cryptographic proof that the agent is who it claims to be. This article explores identity verification frameworks that enable trustless agent-to-merchant relationships in financial ecosystems.
Overview
Traditional identity verification works for humans and organizations, but AI agents present unique challenges:
The key insight: agent identity isn't about "who they are" but "what authority they have been granted." This requires cryptographic proof mechanisms rather than traditional identity documents.
AffixIO's framework establishes agent identity through multiple cryptographic primitives:
An agent's primary identity is a public/private key pair. All actions are signed with the private key; all verifications use the public key.
An authoritative issuer (company, platform) cryptographically attests that a specific key pair represents a legitimate agent.
Beyond key pair verification, merchants need to know: "Is this agent trustworthy?" Reputation credentials provide this information:
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