Proof vs Indicio vs deepidv: who gives AI agents an identity
Proof, Indicio, and deepidv compared on AI agent identity: x401 authorization evidence, verifiable credential rails, and the decision plane that scores both.
Oct 23, 20265 min
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World, Humanity Protocol, and deepidv compared: iris and palm proof-of-personhood schemes beside the identity engine regulated verification still requires.
An operational engineering analysis evaluating deepidv, World, and Humanity Protocol as proof-of-personhood pitches itself into banking: two uniqueness schemes with different biometric anchors and trust models, beside the identity engine the regulated questions still route to.
The comparison is a category clarifier before it is a bake-off. World and Humanity Protocol compete with each other on the uniqueness question, one human, one credential, anchored in iris or palm. deepidv answers the identity question, which human, verified how, present now, evidenced for whom. Buyers evaluating "personhood for finance" are usually assembling both answers, and the assembly is where the architecture decisions live.
| Capability | deepidv | World | Humanity Protocol |
|---|---|---|---|
| Uniqueness guarantee (Sybil resistance) | Book-level reuse analytics, per-customer scope | Core: Orb iris deduplication, 18M+ enrolled | Core: palm-based verification, ZK credentials |
| Enrollment hardware footprint | Standard devices, no proprietary hardware | Orb network, expanding but bounded coverage | Palm scan via devices and partner hardware |
| Identity attributes and KYC evidence | Core: documents, biometrics, registries, screening | Proof of Attributes from government ID, ZK-presented | Credential attestations on its network |
| Present-person binding at action time | Core: structural liveness, injection defense | Proof of Presence via smartphone liveness | Session checks per integration |
| Agent principal binding | Arc mandates traced to verified humans | AgentKit delegated proofs, beta | Agent-facing credentials on roadmap |
| Regulatory evidence (per-decision records) | Core: method-named, exportable | Unlinkability by design limits relying-party records | Network attestations |
deepidv's position in a personhood-inflected stack is unchanged by the category's arrival: regulated flows must still answer who, with validated evidence, present at the moment of consequence, with records, and that is the engine's job, document and biometric proofing on structural liveness, registry and screening integration, action-bound approvals, and per-decision evidence. Personhood proofs slot in as welcome inputs: a Proof of Human is powerful anti-Sybil evidence the reuse analytics corroborate, an attribute proof is a data-minimizing evidence source, and a delegated agent proof is a principal signal Arc's mandate chain can anchor. The boundary is symmetrical: deepidv does not operate a global uniqueness gallery, and platforms whose core problem is one-account-per-human at internet scale need a scheme built for exactly that.
World is the category's scale leader: Orb-based iris deduplication, 18 million-plus enrolled humans, ZK presentation with nullifiers, and a product push, Zoom badges, banking proofs, agent delegation, that reads the agentic moment correctly. Its strengths are the hard ones to copy, deduplication at population scale and a shipping hardware network. The diligence questions are the category's concentrated at its leader: enrollment-channel governance and insider-fraud controls around the Orb fleet; gallery custody and jurisdictional standing, several countries having restricted iris collection; revocation in an unlinkable system; token-economy dependence of the growth engine; and the banking gap the launch itself displays, strong design partners from capital markets, no named banks, because unlinkability by design complicates the per-decision records regulated relying parties must keep.
Humanity Protocol attacks the same uniqueness problem with a friendlier capture story: palm verification, positioned as less invasive than iris and enrollable on commoner hardware, ZK credentials on its network, and an ecosystem courting the same agent and sybil-resistance use cases. For integrators, the lower-friction enrollment is a genuine distribution argument. The evaluation questions are the challenger's: deduplication strength of palm at population scale versus iris's entropy, the maturity gap in enrolled volume and attack history, the same enrollment-governance and revocation questions the category cannot escape, and the standing caveat that a younger gallery has simply met fewer adversaries, which is a schedule, not a verdict.
Suggested read: What is proof of personhood?
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Book a DemoRun a bank's actual flow against each answer alone, then composed. A new customer arrives with a Proof of Human: uniqueness is answered, and the CIP file is still empty, no name, no validated document, no screening, so personhood alone fails the regulated gate by category. The same customer through identity proofing alone: the file fills, and nothing stops the same human opening the fifth account under the fifth synthetic persona except book-level analytics, which personhood would have answered in one check. Composed: the proof collapses multiplicity, the engine answers identity and presence, attribute proofs trim the data collected, and the evidence record notes each input's role, which is the architecture that satisfies both the fraud team and the examiner. The buyers' moral is the category's: personhood schemes and identity engines are complements wearing competitor costumes, and the stack that treats them that way gets the strengths of both galleries without pretending either answers the other's question.
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World and Humanity Protocol prove unique humanness, iris-anchored at scale versus palm-anchored challenger, with ZK presentation; deepidv verifies identity, which human, with documents, liveness, screening, and per-decision evidence, consuming personhood proofs as inputs.
No: KYC requires knowing which customer, with validated attributes and screening. Personhood proofs contribute uniqueness evidence and, via attribute extensions, data-minimized facts, but the regulated file still comes from identity verification.
Iris carries higher entropy for deduplication at population scale and World's volume advantage; palm offers friendlier capture and distribution. Both inherit the category's real risks at enrollment governance, gallery custody, and revocation, which matter more than modality.
They bind principals: a delegated proof shows a real, unique human stands behind an agent. Action authorization still needs mandates and bound approvals, so agent stacks pair personhood with identity-anchored checkpoint ceremonies.
No need to wait or to bet: consume the proofs as weighted anti-Sybil evidence where available, keep identity proofing and presence binding as the regulated core, and let the category's governance questions resolve on its own schedule.
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