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Certified Evidence — SHA-256 Integrity & Audit Log

What Certified Evidence does on the CERTIFY plan — per-file SHA-256 integrity hashing and an evidence audit log — and, just as important, what it does not claim.

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Certified Evidence — SHA-256 Integrity & Audit Log

On the CERTIFY plan, Certified Evidence adds a layer of integrity to your documentation: each evidence file carries a SHA-256 hash, and the platform keeps an audit log of evidence events. Together they let you show that a file is the same file it was when captured.

We're precise about what this is — and what it isn't — because in appraisal and litigation, overstating it is worse than not having it.


What it does

  • Per-file integrity (SHA-256). Each photo, video, and evidence file is fingerprinted with a SHA-256 hash. If the file changes, the fingerprint changes — so you can demonstrate a file hasn't been altered since it was recorded.
  • Evidence audit log. Evidence events are recorded, giving you a history around the file.

What it does not claim

  • It is not a linked "tamper-proof chain" across files, and there is no public verification page. It is per-file integrity plus an audit log — no more, no less.
  • It certifies the evidence, not the AI's interpretation of it. AI findings are recorded as what the AI observed; they still require professional review.
  • It does not establish who captured the file, the legal admissibility of any item, or the condition of the property at any time other than capture.

Why it still matters

In a world where photos are trivially edited, being able to show that this file is unchanged since capture is real, defensible value. It supports your evidence; it doesn't replace your professional judgment or a licensed opinion.

Using it well

  • Treat integrity hashing as support for your evidence, not proof of your conclusions.
  • For questions of admissibility in a specific jurisdiction, consult qualified counsel — Estimatics is a technology platform, not a law firm. (See the Evidence & Certification Disclaimer in Legal.)

Related: Evidence-Linked Estimation (see Estimate) · Professional & Branded Reports · Legal: Evidence & Certification Disclaimer

Last updated: August 2026 · Feedback on this article