ProofSnap Home How It Works Pricing FAQ Contact Sample Zip Get Extension 🚀 Coming Soon to Chrome Web Store Capture the Web as Evidence . Trustworthy. Irrefutable. Capture tamper-evident webpage screenshots, metadata, and cryptographic proofs for legal and investigative use. ProofSnap creates legally admissible digital evidence using SHA-256 hashing, digital signatures, and blockchain timestamping. Produce a complete evidence package with screenshot, DOM html and text, metadata, manifest, and verifiable OpenTimestamps proofs for court-ready preservation and compliance. Note: ProofSnap can also capture web-based messaging platforms (for example: WhatsApp Web, Telegram Web, and similar) — including conversation screenshots, message metadata, and preserved HTML for forensic review. Download Extension What ProofSnap Captures Full page screenshot Complete visual capture of the entire webpage Metadata Timestamp, URL, user agent, and technical details Hash & digital signature Cryptographic proof of authenticity Export options Download as ZIP with all evidence files Who Uses ProofSnap and Why Lawyers & Compliance Document evidence for legal proceedings and regulatory compliance Timestamped snapshots for dispute resolution Audit-ready exports for regulatory filings Cryptographic hash for integrity Contract, Employment disputes "Screenshots aren't enough in court. ProofSnap gives us the structure, timestamp, and traceability we need." Journalists & Digital Investigators Preserve online evidence for investigative reporting Capture controversial posts or deleted pages Export as PDF or ZIP for transparency Embed source URL, timestamp, browser context Digital forensics, website changes, online harassment "ProofSnap lets us document the truth before it's edited, censored, or erased." Freelancers & Developers Archive web content for academic and technical research Save snapshots of staging or live releases Include DOM for frontend debugging Share ZIPs with clients or QA Timestamped proof for verification Web archiving, version control, data collection "It's like Git for the browser — I can prove exactly what the site looked like when I shipped it." HR Managers, Recruiters, Visa Officers, Talent Ops Personal and professional documentation needs Timestamped proof for employment validation and visa processing Archive candidate documents for compliance and audit Save snapshots of onboarding portals and signed contracts Share ZIP bundles with legal, visa, or payroll teams HR archiving, onboarding version control, and data integrity "It gives us a timestamped snapshot of the entire onboarding flow — perfect for audits, visa processing, or internal reviews." Anyone Who Needs Trusted Snapshots Personal and professional documentation needs Save pricing pages, policies, receipts Archive agreements or service terms Use for personal records or disputes Exportable, portable, legally meaningful "I don't just save what I see — I save what it means." How ProofSnap Works 1 Navigate to Target Webpage Open any web page you want to capture as evidence 2 Open ProofSnap Extension Open the ProofSnap extension to begin the capture process and then click " Capture page snapshot ". 3 Download Evidence Package Download a comprehensive ZIP archive containing all evidence files, cryptographic proofs, and blockchain timestamps by clicking " Download zip " — or download individual files using the download icon in the Action column. Store securely on your device or in the cloud. 4 Verify with Trust Verifier Upload your evidence package ZIP archive by clicking the upload field and then click " Verify zip file " to independently confirm cryptographic integrity, validate digital signatures, and verify blockchain timestamps Flexible Plans for Every Stage Choose your plan and activate it directly in the app . Monthly Annually → Save 20% Essential $8.99 per month Monthly Snapshots: 100 7-day free trial included Export individual files Export zip archive Legal-grade metadata (timestamp, hash, source) Blockchain (OpenTimestamps) Regular use, archiving Most Popular Professional $16.99 per month Monthly Snapshots: 200 7-day free trial included Export individual files Export zip archive Legal-grade metadata (timestamp, hash, source) Blockchain (OpenTimestamps) Verified timestamping, audit-grade documentation Enterprise $24.99 per month Monthly Snapshots: Unlimited 7-day free trial included Export individual files Export zip archive Legal-grade metadata (timestamp, hash, source) Blockchain (OpenTimestamps) High-volume teams, compliance-driven workflows Essential $80 $107.88 per year Monthly Snapshots: 100 7-day free trial included Export individual files Export zip archive Legal-grade metadata (timestamp, hash, source) Blockchain (OpenTimestamps) Regular use, archiving Most Popular Professional $160 $203.88 per year Monthly Snapshots: 200 7-day free trial included Export individual files Export zip archive Legal-grade metadata (timestamp, hash, source) Blockchain (OpenTimestamps) Verified timestamping, audit-grade documentation Enterprise $240 $299.88 per year Monthly Snapshots: Unlimited 7-day free trial included Export individual files Export zip archive Legal-grade metadata (timestamp, hash, source) Blockchain (OpenTimestamps) High-volume teams, compliance-driven workflows Frequently Asked Questions What does the ZIP archive contain? screenshot.png: Image file capturing a visual snapshot of the web page. metadata.json: Contains contextual details about the evidence, such as timestamp, URL, and browser information. manifest.json: Lists all evidence files and their hashes to verify the integrity of the package. manifest.sig: Digital signature for the manifest file, ensuring authenticity and integrity. manifest.json.ots: OpenTimestamps proof file for the manifest.json. publickey.pem: Public key used to verify the digital signature of the manifest. evidence.pdf: PDF document compiling all evidence files for easy sharing and review. domtextcontent.txt: Plain text content extracted from the web page's DOM. page.html: Full HTML content of the captured web page. How does ProofSnap Trust Verifier validate ZIP archive files? To check the integrity of your ZIP archive, upload it to the ProofSnap Trust Verifier and click the Verify manifest button. Unpacking: The ZIP archive is automatically extracted, revealing all included files. Manifest check: The verifier reads manifest.json , which lists each file and its expected SHA-256 hash. Hash validation: For every file, ProofSnap computes its SHA-256 hash and compares it to the value in the manifest. Result display: You’ll see a list of files with their validity status: Valid: The file’s hash matches the manifest. Invalid: The file’s hash does not match, indicating possible tampering or corruption. Note: ProofSnap uses the SHA-256 hashing algorithm, which ensures strong cryptographic integrity for file verification. How to manually verify manifest.json.ots on OpenTimestamps.org website? To verify the timestamp of your evidence using OpenTimestamps: Extract the ZIP archive: Unzip your ProofSnap ZIP archive to access its contents. Locate files: Find manifest.json and manifest.json.ots in the extracted folder. Open OpenTimestamps website: Go to https://opentimestamps.org/ Upload files: On the website, upload manifest.json.ots as the timestamp proof and manifest.json as the file to verify. Check verification result: The site will show whether the timestamp is valid and anchored on the Bitcoin blockchain. Note: OpenTimestamps provides cryptographic proof that your evidence existed at a specific time, independently verifiable on the blockchain. How to Manually Verify File Validity from a ZIP Archive? If you have a ZIP archive from ProofSnap and want to confirm its contents haven't been tampered with, follow these steps. ProofSnap uses the SHA-256 hashing algorithm to ensure file integrity. Extract the ZIP archive: Unzip the file to access its contents. Locate the manifest: Find the manifest.json file listing expected SHA-256 hashes for each file. Compute the hash manually: macOS / Linux: Open Terminal and run: shasum -a 256 <filename> Windows (PowerShell): Open PowerShell and run: Get-FileHash -Path "<filename>" -Algorithm SHA256 Compare the result: Match the computed hash with the one listed in the manifest. If they match: The file is valid. If they differ: The file may be corrupted or altered. Is ProofSnap evidence legally admissible? ProofSnap generates forensically sound evidence with cryptographic proofs. Admissibility depends on jurisdiction and specific legal requirements. Consult with legal professionals for specific cases. Contact Us Have questions about ProofSnap or need enterprise solutions? Get in touch with our team. First Name Last Name Email Company Message Send Message ProofSnap Capture the web as evidence. Trustworthy. Irrefutable. © 2025 ProofSnap. All rights reserved. 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