Chain / On-Chain
Create review paths that show how a record was submitted, changed, approved, disputed, expired, corrected, or referenced by another system.
Verification paths explain how a viewer, auditor, application, or authority can understand record state. OCO designs submission history, approval evidence, change history, dispute handling, correction paths, expiration, revocation, and external references. The objective is not to claim that a record is automatically true; it is to make the record history inspectable and difficult to alter quietly.
Approach
Chain or on-chain infrastructure is used only when the use case justifies a durable evidence layer. OCO begins by separating truth of the original input from proof of submission, approval, timestamp, change history, or disclosure state. Governance, input controls, reviewable records, and clear user explanation carry the trust model. The chain layer then becomes one part of a broader evidence system: useful when it strengthens accountability, avoided when a normal database, audit log, or private record is the better engineering choice.
Scope
OCO uses chain or on-chain infrastructure when a data product needs durable records, verification paths, public accountability, or alteration-detectable change history.
Tamper-evident evidence and transparency records.
A chain record does not make an original claim true by itself. It makes records, changes, approvals, and evidence trails harder to alter without detection when governance, input controls, and review paths are defined.