Hash chains, sidecar digests, and browser or Python verifiers answer the first question: does this copy still match the recorded packet?
Open verifier →Find weak evidence before formal review.
Hardseal combines a local proof primitive with a governed review path for SSPs, POA&Ms, SPRS snapshots, policies, screenshots, tickets, exports, and control evidence.
- SSP, POA&M, SPRS, policies, screenshots, tickets, exports, and control evidence.
- Findings packet showing supported, partial, contradicted, and missing evidence.
- Pre-assessment support only. Hardseal does not certify, assess, or guarantee compliance.
Want proof first? Use the browser verifier below or inspect a sample packet before you apply.
Scope
We align on business context, environment boundary, target control set, and what review outcome matters.
- Scope confirmation
- Inheritance and assumptions
- Assessment objective mapping
Evidence handoff
You provide artifacts through an agreed path. The first contact identifies the packet; sensitive evidence does not move through checkout.
- Secure handoff path
- Packet completeness check
- No blind email dump
Findings packet
You receive clear findings that show contradiction risk, unsupported claims, and what to fix next.
- Evidence integrity summary
- Risk and contradiction notes
- Prioritized actions
Hardseal identifies evidence risk, gaps, and contradictions so teams can prepare better before formal review.
Verify the proof primitive before you buy the review.
Drop a packet, paste a SHA, or upload evidence. The verifier runs in your browser. The math is the witness.
Hardseal is a verification primitive with a governance path around it: prove what copy you have, control how evidence moves, and name what must be fixed before formal review.
Scope confirmation, handoff rules, owner checks, sensitive-evidence warnings, and stop conditions keep the review from becoming an uncontrolled file dump.
See client path →SSP, POA&M, SPRS, and control evidence are compared for unsupported claims, partial support, contradiction risk, and the next proof needed.
Request review →One primitive. Three governed surfaces.
Generate hash-chained, offline-verifiable evidence packages your assessor can verify offline (SHA-256 chain root, sidecar digest). A passing verification proves the pack is internally consistent and matches its expected root, not that its contents satisfy any control. See weak evidence before formal review.
Review the offer →Hash-seal every inference run with model version, hardware fingerprint, sensor inputs, and decision outputs into a SHA-256 chain root. The integrity layer for autonomous systems.
Learn more →Keep your proof live. Re-verify on cron. Build a public receipt trail that compounds time-in-production into a moat competitors cannot backdate.
Open trust ledger →Every claim, a packet. Every packet, a chain root.
The chain runs while you read this page.
Verification is free. Forever.
Verification is free. Remediation paths are the upgrade.
- Browser verifier
- Standalone Python verifier
- Schema reference
- Sample packets
- 30-second verification demo
- SSP-to-evidence contradiction scan
- AI-generated artifact and boilerplate screen
- Specific field-level findings
- Remediation path and re-seal guidance
- Pre-assessor readiness review
- Findings walkthrough
- Remediation priorities
- Evidence re-seal guidance
- Optional readiness sprint
- Invoice or PO workflow available
Evidence Integrity Review: first 5 qualified design partners free, then $5,500 one-time. Edge retainer: $495/mo. Custom integrations: scoped per engagement.
Hardseal does not certify. Hardseal does not assess. Hardseal does not endorse. Hardseal generates verifiable evidence. Your assessor makes formal decisions.