The Substrate Series · Evidence · 6 of 7

Evidence as a workflow output.

How provenance captured during execution can reduce later reconstruction.

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The Substrate Series · 6 of 7

An authorized reviewer needs to examine how a workflow was performed, which sources were used, and who approved the result.

Trials, diagnostics, and clinical programs all require evidence that connects an output to its source records, applied rules, transformations, and review events.

Consider a regulatory submission for a blood-based cancer screening test. Reviewers may need to examine clinical results alongside analytical validation, including specimen handling, assay performance, variant-calling methods, and the statistical framework linking ctDNA signal to cancer detection. Keeping that context connected to the original execution can reduce the reconstruction required when questions arise.

Evidence is what allows an authorized reviewer to inspect how a workflow was performed and where accountable decisions occurred.

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Evidence by construction

Evidence is often assembled after the fact. Teams reconstruct lineage, audit trails, and provenance from logs, approvals, and separate documentation systems.

Evidence becomes expensive when it has to be assembled after the fact.

That reconstruction can be slow and error-prone.

Reviewable evidence needs source provenance, applied rules, transformation history, and accountable review context that remain available across organizational boundaries.

Veridata records source references, applied rules, transformation history, and review context during execution so teams can reduce the evidence they must reconstruct later.

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