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SIGMA PROOFKIT

Document files now. Verify them later.

Storage
Developer Tools
Security
Visit WebsiteSee on Product HuntMicrosoft ⧉

Hunted byBlack Summit Holdings LLCBlack Summit Holdings LLC

SIGMA PROOFKIT is a local-first Windows utility for documenting selected files and verifying later whether they still match the recorded baseline. It creates preservation copies, SHA-256 checksum records, evidence manifests, and readable PDF documentation. Verification identifies files that are verified, modified, missing, unexpected, or unreadable. No required account, subscription, telemetry, or mandatory cloud upload.

Top comment

I built SIGMA PROOFKIT around a simple problem: saving files does not prove that the copies you look at later are unchanged from the ones you originally documented. ProofKit creates a documented baseline using preservation copies, SHA-256 hashes, evidence manifests, and PDF records, then lets you verify a later file set against that baseline. One design principle was important from the start: don’t claim more than the evidence proves. A matching hash can show that file contents match, but it cannot establish authorship, truth, event time, or what happened before the baseline was created. I’d especially value feedback from people working in security, compliance, investigations, risk, and document control.

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About SIGMA PROOFKIT on Product Hunt

“Document files now. Verify them later.”

SIGMA PROOFKIT was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #120 on the daily leaderboard. SIGMA PROOFKIT is a local-first Windows utility for documenting selected files and verifying later whether they still match the recorded baseline. It creates preservation copies, SHA-256 checksum records, evidence manifests, and readable PDF documentation. Verification identifies files that are verified, modified, missing, unexpected, or unreadable. No required account, subscription, telemetry, or mandatory cloud upload.

SIGMA PROOFKIT was featured in Storage (7.2k followers), Developer Tools (520.4k followers) and Security (2.9k followers) on Product Hunt. Together, these topics include over 93.2k products, making this a competitive space to launch in.

Who hunted SIGMA PROOFKIT?

SIGMA PROOFKIT was hunted by Black Summit Holdings LLC. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.

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