Non-human identity in payment systems
What it is: Non-human identity in payment systems is a stable agent handle (keys, issuer registration) used for policy and limits—not a marketing persona—and it binds to delegations the user issued.
Below: registration, handles versus display names, binding to delegations, and what issuers authorize against.
A payment identity does not need a face or a story. It needs a stable reference: something the network can key policy against, attach limits to, and revoke without ambiguity. “Non-human” is not a philosophical claim; it is an operational one—the actor is not the cardholder session you modeled your risk stack around.
Handles, bindings, and what display names are not
- Register agent handle — Cryptographic keypair or attested identity document.
- Bind to user delegation — Signed permission linking handle to instrument scope.
- Transact — Attempts cite handle + delegation + nonce.
- Audit — Logs reference handle IDs, not raw model names.
Where current systems fail
- Using chatbot names as identity — Unstable and unverifiable.
- Merchant session cookies as proxy — Does not bind to issuer authorization.
Confusion is expensive: a support agent reassuring a customer that “the AI has a name” does nothing for authorization. Handles and keys are boring on purpose—they are what you attach policy to when volume scales.
Risks and attack surfaces
- Handle cloning — Mitigated by keys and attestation.
- Confusion attacks — Similar display names; rely on handle IDs in APIs.
How verification or authorization is enforced
Authorization checks delegation bound to the handle. Authentication of the human is separate; the handle proves agent identity for the attempt.
Where stateless verification applies
Verifiers validate keys and signatures; they do not store biometric or behavioural data about the agent.
How AffixIO approaches this
Handles and keys are treated as payment infrastructure, not branding. AffixIO’s model assumes display strings can lie; cryptographic binding and issuer registration cannot be swapped at the UI layer.
- Stable identifiers — Agent identity is what policy attaches to; chat titles are not.
- Delegation binding — Permissions reference the handle and instrument scope explicitly.
- Attestation where required — Hardware or platform attestation can raise assurance without turning every agent into a KYC event.
Where this fits in agentic commerce
Issuer
Registers handle tiers and risk.
Merchant
Displays handle ID only as needed.
APIs
Machine clients use stable agent IDs.
Edge / offline
Local validation of keys and expiry.
What this system does not solve
Does not grant legal personhood. Does not guarantee the agent’s internal reasoning—only verifiable credentials and scope.
Frequently asked questions
No. Payment-grade identity is a stable handle with verifiable keys and delegation—not a marketing persona.
Humans authenticate; agents present authorization proofs bound to a handle. See machine authorization vs authentication.
Cryptographic key material, optional hardware attestation, and issuer-registered handle tiers—not display names.
Further reading
Implement stateless verification
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