SpherePublic showroom
CorridorZcash income passport policy
ModelInstitutional layer
- Designed for mobility corridors where the holder is reviewed abroad.
- Built to reduce abusive deposits and subjective risk reading by verifiers.
- Privacy is applied end-to-end, from holder intake through institutional audit.
Privacy model
Privacy model
Attestations are checked inside the holder environment and the witness is derived locally before anything is handed to the verifier.
- The holder device checks issuer signature, integrity, and freshness before proving.
- The proof bundle is assembled after local witness derivation, not before it.
- The verifier never receives raw financial records to make the decision.
Verification model
Verification model
The reviewer receives a short, readable packet that is enough to confirm policy, validity window, and cryptographic trail without requesting a full financial dossier.
- Minimum disclosure tied to the decision, not broad exposure of context.
- Policy binding and receipt references stay legible for later review.
- Approvals rely on proof plus receipt instead of ad-hoc paperwork.
Verification stack
Verification stack
The technical layer shows up as trust support: Halo2 circuits, IPA verification, selective disclosure, and shielded anchoring on Zcash.
- Halo2 circuits bind the holder witness to a policy-aware statement.
- IPA verification keeps verifier workflows compact and browser-friendly.
- Shielded Orchard anchoring records the decision trail without breaking holder privacy.