OpenChainGraph Suite · ART-108 · Wave 21

Canton Selective-Disclosure DvP Reconciliation Attestation

Attests that a Canton DvP privacy partition is sound — each counterparty sees only its own leg, both views reconcile to one atomic commitment, no cross-leg field leakage. Optional Ed25519 §16 proof binds the attestation to a key.

Zero PII Client-side only Canton DvP Privacy §16 Sign Enabled Structural Inputs Only
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Presets
Asset Leg
Roles that can see the asset leg. Canonical: registrar. E.g. registrar,custodian
Structural field names — no real values. E.g. isin,quantity,seller_id
Cash Leg
Roles that can see the cash leg. Canonical: bank. E.g. bank,nostro_agent
Structural field names — no real values. E.g. amount,currency,buyer_id
Shared Atomic Commitment
Opaque commitment string binding both legs to one atomic DvP. Not a real hash — use a synthetic token.
Partition Verdict
Registrar View
Bank View
Cross-Leg Leak
Reconciles to Commitment
Partition Attestation String
Compliance Flags
Execution Hash & §4 Artifact
SHA-256 execution hash (JCS canonical · RFC 8785):