CrithLabs · Digital Evidence Protocol

Prove what actually happened.

VidProof seals video, content, and AI decisions into tamper-proof proof bundles — a single file containing the complete chain of custody. Verification does not depend on VidProof. The proof travels with the file.

▶ Verify a bundle Get in touch →
VidProof  ·  v1.0 · CrithLabs
Main
◈ Dashboard
📁 Projects
🎞 Tokens
➕ New Token
📦 Bundles
Tools
✔ Verify
🛡 Compliance
🗂 Datasets
🔧 Video Fixer
🔐 Fingerprinter
crithlabs
Overview
Dashboard
3
Projects
4
Tokens
3
Bundles
OK
System
📁
New Project
Create and build
🛡
Compliance
Log AI decisions
🗂
Datasets
Provenance registry
🔐
Fingerprinter
Any file, batch mode
Proof travels with the fileNo vendor dependencyAlteration is detectableChain of custodyConstellation NetworkVerifiable by anyoneEU AI Act readyPDF chain of evidenceECDSA signedSHA256 sealedDataset provenanceProof travels with the fileNo vendor dependencyAlteration is detectableChain of custodyConstellation NetworkVerifiable by anyoneEU AI Act readyPDF chain of evidenceECDSA signedSHA256 sealedDataset provenance
The problem
If this gets challenged —can you prove it's real?
⚠
Most systems require trust
Their platform. Their servers. Their word. When they're gone, the proof is gone. When they're challenged, you're challenged.
🔍
VidProof works differently
Proof can't be altered without detection. Anyone can verify it in seconds. No account, platform, or vendor required. Still verifiable even if we disappear.
Who it's for

When the stakes are real.

Built for situations where evidence gets challenged. Legal. Financial. Institutional. Accountability.

⚖️
Legal
Cryptographic chain of custody. Holds up when opposing counsel challenges authenticity. Verification takes 30 seconds, requires nothing from us.
🛡️
Insurance
Submitted evidence verified mathematically. Fraud doesn't survive a hash check. Automated, instant, no manual review required.
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Investigations
Surveillance and incident footage sealed on capture. Chain of evidence from the moment of recording to the moment it's presented.
🤖
AI Systems
Every decision an AI makes — sealed, timestamped, verifiable. Audit trail that satisfies emerging compliance requirements and survives legal challenge.
🏢
HR & Compliance
Recorded incidents and interviews sealed at the moment of capture. Tamper-proof. Timestamped. Defensible in any proceeding.
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Real Estate
Property condition locked to a specific date and time. Undisputable record that predates any claim of damage or alteration.
Also used by journalists, content creators, and activists when proof of authenticity is required.
How it works

One protocol. Three steps. No trust required.

The same cryptographic pipeline every time. No shortcuts, no exceptions.

01
Seal
Content gets hashed with SHA256, signed with ECDSA, and anchored to the Constellation Network blockchain. From this moment forward, any alteration is mathematically detectable — by anyone.
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02
Bundle
The content, signature, PDF chain of evidence report, and full audit trail get packaged into one sealed file with a signed SHA256 sidecar. Everything needed to verify is inside. No external system required.
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03
Verify
Drop the bundle here or open verify.html inside the zip. No account. No software. No us. The proof is self-contained and permanent. It was true before we existed and stays true if we disappear.
The app

Professional infrastructure.

For organisations that handle sensitive data and can't route it through a third party — VidProof runs entirely on your own machine.

🎞
Token Library
Every media file gets a signed token with full fingerprint, hash, and usage audit trail. Nothing is used without being verified first.
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Sealed Bundles
Full proof bundles with ECDSA-signed manifest, Merkle roots, PDF chain of evidence, and SHA256 sidecar seal. One file, complete custody.
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Content Fingerprinter
Fingerprint any file — documents, images, video — directly to Constellation Network. Single file or batch up to 10. Custom Document ID and metadata.
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PDF Chain of Evidence
Professional PDF report generated automatically with every bundle. Verification results, cryptographic details, Constellation anchor — court-ready.
✔
Instant Verification
Drop any bundle into the desktop app or the web verifier. Full cryptographic check in seconds. Valid verdict, signed receipt saved automatically.
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Video Fixer
Re-encodes incompatible footage to 1080p 30fps H.264 before tokenizing. Ensures consistent, verifiable output regardless of source format.
AI Accountability

Proof for what your AI decided.

VidProof doesn't just seal video — it seals the decisions your AI systems make, and the data behind them. Same cryptographic protocol, same independent verification.

EU AI Act · Article 10 · 12 · 13

Built around what regulators actually ask for.

Every decision an AI system makes — a flagged transaction, a rejected application, a content moderation call — gets timestamped, hashed, and sealed the moment it happens. Confidence scores, reasoning, the factors behind the call. All captured, all immutable, all anchored to Constellation Network.

Datasets and model versions get their own registry, hashed for provenance and linked to the decisions they informed. When someone asks what trained the model and why it decided what it did, you open the bundle. The answer is already there, signed and unalterable.

Article 12
Decision Logging
Every prediction, input, and output recorded automatically. Hashed, timestamped, sealed — not sampled, not best-effort.
Article 13
Transparency
Reasoning and key factors captured alongside every decision, shown in plain language in the chain of evidence report.
Article 10
Data Governance
A hashed registry of datasets and model versions, with lineage and bias-mitigation notes attached.
How to work with us

Two ways to get proof.

Whether you need one bundle or ongoing infrastructure, there's a path that fits.

Most common
Use the service
Send us your content. We run the full VidProof protocol and deliver a sealed proof bundle. No setup, no software, no commitment.
  • Full VidProof protocol applied to your content
  • Sealed bundle with PDF chain of evidence delivered
  • Constellation Network anchoring included
  • First one on the house — no risk to try
  • Ongoing retainer available for high-volume clients
Get in touch →
For sensitive data
Your own infrastructure
For organisations that can't route sensitive data through a third party. VidProof runs entirely on your machine. We never see your content.
  • Desktop app installed on your hardware
  • Your own Constellation API credentials
  • Compliance logging and dataset registry included
  • Batch fingerprinting and video processing
  • Your data never leaves your environment
Ask about it →
Verification

Drop it. Get the truth.

Any proof bundle, verified in seconds. No account. No software. No us required.

📦
Drop your proof bundle
or click to select — .zip file
Contact

First one's on the house.

Lawyers, investigators, HR, insurance, real estate, AI teams — if you need evidence that holds up when it gets challenged, drop me a line.

✉ crith@crithlabs.com