A requirement-to-proof matrix gives every scoped obligation a source, current artifact, repeatable evidence method, result, exception path, and client-owned disposition.
Rows derived from supplied scope records
Create one row for each independently reviewable obligation in the confirmed milestone. Keep the source language, citation, requirement identifier, change-order status, deliverable component, and accountable owner visible. Do not split one sentence into artificial obligations merely to increase completeness, and do not combine unrelated criteria into a row that can only pass or fail as a bundle. A separate unknowns register should capture language whose meaning or precedence the supplied record does not establish.
NIST lists completeness, consistency, correctness, modifiability, ranking, traceability, unambiguity, understandability, and verifiability as functions relevant to requirements verification. The matrix can expose these qualities without claiming to resolve them. A requirement that cannot be tested may still be reviewable through inspection or demonstration; a requirement that no accountable party can interpret should remain held for clarification.
Evidence fields and revision history
The proof side should record the artifact version, environment, procedure, result, raw evidence link, reviewer, date, known limitation, and confidence boundary. Preserve failed runs and superseded evidence instead of overwriting them. When a revision changes the deliverable, link the new result to the prior review comment and show which rows changed. This makes the next client review about the delta rather than a complete rediscovery of the milestone.
Attach evidence by reference rather than copying every artifact into the matrix. A durable link or content hash can identify a build, report, recording, dataset, or test output while keeping the register readable. Access rules for client material still apply. If an evidence source is private or expires, record its owner and retention condition so a later reviewer knows whether a missing link reflects a failed control or an intended deletion.
Exception rules and final submission view
Define what qualifies for revision, client clarification, accepted exception, or exclusion. Exceptions should cite the affected row, reason, proposed treatment, approving role, date, and impact on adjacent requirements. They should not silently change the original source text. The client-facing view can group ready, revision, clarification, and exception rows while retaining a direct path to the full history.
Milestone Proof builds and verifies the matrix through Reality Contact, LLC. The buyer confirms the supplied scope history and chooses when to submit. The client remains the acceptance authority, and both parties retain responsibility for contract interpretation, invoice timing, and any waiver or remedy associated with a finding.
Where the service stops
Reality Contact, LLC implements the evidence system but does not provide legal advice, interpret disputed contract rights, decide whether a client must accept or pay, sign on either party's behalf, send the submission, or issue an invoice. The delivery lead reviews the packet, submits the milestone for explicit client acceptance, invoices under the applicable agreement, and carries the accepted gates into the next phase. This is delivery-operations implementation and document preparation; it does not replace either party's legal, contract, accounting, tax, or commercial review. We do not promise client acceptance, payment, dispute prevention, enforceability of a signature, or successful completion of requirements whose meaning remains unresolved.
Sources: NIST requirements-verification functions; NIST acceptance documentation and traceability guide.