ProofSnap - Digital Evidence

Screenshots can be challenged in court. ProofSnap makes your evidence tamper-proof.

One click captures any webpage as a blockchain-timestamped, digitally signed evidence package — court-ready under US Federal Rules of Evidence (FRE 901/902) and EU eIDAS Regulation 910/2014. 7-day free trial.

§ Why ProofSnap
A regular screenshot can be forged in 30 seconds with browser DevTools. In *United States v. Vayner*, a federal court rejected a Facebook screenshot for lack of authentication. ProofSnap ensures your evidence holds up — with metadata, timestamps, chain of custody, and cryptographic proof.

◆ Provenance Certificate — Anti-Deepfake
Every capture includes a Provenance Certificate PDF proving evidence was captured live from a real browser, not AI-generated. Eight integrity checks verify device, time, DNS, and TLS. Meets proposed FRE 707 (2025) and EU AI Act Article 50 (August 2026).

▪ Five Layers of Protection
Auto-refresh before capture · SHA-256 cryptographic hash · RSA-4096 digital signature · Bitcoin blockchain timestamp · EU eIDAS Qualified Timestamp (Enterprise/Company plans). Plus ISO/IEC 27037:2012 chain of custody and device integrity scoring.

▣ Evidence Package Contents
Full-page or visible-area screenshot, complete HTML, DOM text, forensic metadata (URL, timestamps, TLS, cookies), SHA-256 manifest with RSA-4096 signature, blockchain proof (.ots), tamper-evident forensic log, ISO 27037 chain of custody, Provenance Certificate PDF, court-ready evidence report. Self-contained ZIP.

▶ Optional Video Recording — Three Modes
Auto (1-click, records the capture process), Manual (user-driven for media playback like livestreams or YouTube videos), Session (multi-tab continuous recording). All hashed, signed, and blockchain-timestamped alongside other files. For 30-min recordings with audio capture, see Video SnapPack below.

※ Session Capture — Multi-Tab Forensics
Document an entire browsing session as a single evidence package. Every visited http(s) tab gets full-page screenshot, HTML, DOM text, DNS cross-verification (Google + Cloudflare DoH), WHOIS lookup, TLS info, per-tab chain of custody, and signed evidence.pdf. Session-wide screen recording bundled. Ideal for compliance audits, fraud investigation, journalism, and IP enforcement.

▫ File Certification
Drag-and-drop any file. Each gets SHA-256 hash, RSA-4096 signature, blockchain timestamp, and Provenance Certificate. Batch supported. Enterprise plans include eIDAS qualified timestamps. Files never leave your device — only hashes are sent.

◈ Whitelabel Branding
Replace ProofSnap branding on evidence PDFs with your own logo, organization name, and brand color. Available on Enterprise and Company plans, plus any eIDAS SnapPack or Video SnapPack purchase. Ideal for law firms, agencies, and compliance teams delivering branded evidence to clients.

¤ Pay-Per-Use SnapPacks
SnapPack — 10 evidence captures for $4.99. Credits never expire.

eIDAS SnapPack — EU qualified timestamps without a subscription. 1 stamp $6.99, 5 for $24.99 ($5/stamp), 10 for $44.99 ($4.50/stamp). Credits valid 12 months. Legal presumption of accuracy across all 27 EU member states.

▷ Video SnapPack — Long-form video evidence (30 min + audio) with bundled eIDAS qualified timestamp. For livestreams, video calls, deepfake demos, multi-step transactions. Audio captured at Opus 64 kbps, qualified timestamp by Disig a.s. Buy 1 video $24.99, 3 for $59.99 ($19.99/video, save 20%), or 10 for $169.99 ($16.99/video, save 32%). Credits valid 12 months. Each pack also bundles regular snap credits + eIDAS stamps at 1:1 ratio.

◉ Social Media & Messaging Forensics
Optimized capture for WhatsApp Web, Telegram, Discord, Slack. Captures server-delivered content, not user-modified DOM. Full-page scroll or visible-area only (GDPR compliant).

⚙ AI Accountability
If a chatbot gives binding but incorrect advice, ProofSnap freezes the output with cryptographic proof. Essential for AI liability disputes and EU AI Act compliance.

⌬ AI Image Detection
Every captured image is scanned for AI-generation signals via six local, deterministic layers: C2PA Content Credentials (cryptographic provenance), Google SynthID portal link, IPTC 2025.1 AI properties (AISystemUsed, AI prompt), XMP DigitalSourceType, EXIF/PNG/zTXt metadata patterns (Stable Diffusion, Midjourney, DALL-E, Firefly), and AI gallery URL context (30+ vendors). Each image gets a perceptual hash (dHash) plus reverse-image-search links (Google Lens, TinEye, Yandex) printed in the evidence PDF. Pure on-device parsing — c2pa-js WASM + exifr, no cloud calls. C2PA 2.4 + IPTC 2025.1 compliant.

⚖ Legal Foundation
FRE 901/902 (US authentication) · FRE 902(14) (self-authenticating electronic evidence) · FRE 707 proposed 2025 (AI-generated evidence) · eIDAS Art. 41 (EU legal effect) · EU AI Act Art. 50 (content provenance, August 2026) · ISO/IEC 27037:2012.

▸ Who Uses ProofSnap
Lawyers, legal teams, Airbnb hosts, investigators, journalists, HR, insurance, compliance officers.

▤ Plans
SnapPack — $4.99 for 10 captures, no subscription, never expire.
eIDAS SnapPack — Pay-per-use EU qualified timestamps, from $6.99/stamp.
Video SnapPack — Long-form video evidence with bundled eIDAS, from $24.99/video.
Essential — full evidence package and forensic documentation.
Professional — adds blockchain timestamps.
Enterprise — adds eIDAS qualified timestamps and file certification (50/mo).
Company — team accounts with centralized management.
All subscription plans include a 7-day free trial.

⊕ Available in 21 languages.

✓ Free Trust Verifier — anyone can verify ProofSnap evidence at getproofsnap.com/verify/index.html (client-side, no account needed).

⌗ Open-source verification tool (MIT) at github.com/proofsnap/proofsnap-verify — opposing counsel can audit every line.

ProofSnap — Capture. Timestamp. Preserve. Comply.