getproofsnap.com

What It Is

ProofSnap is a cybersecurity/digital forensics tool for preserving web evidence. It offers Chrome and Edge extensions, a REST API, and on-demand evidence capture services. It is not a standard screenshot tool: it packages the webpage, HTML, MHTML, DOM text, metadata, forensic logs, chain of custody, video recordings, and more into a ZIP file, then uses SHA-256, RSA-4096 signatures, and Bitcoin OpenTimestamps to lock in integrity and timing.

Core Capabilities and Compliance

Its biggest strength is “self-verification”: the evidence package includes a manifest, signature, public key, and timestamp proof, allowing third parties to verify it via Trust Verifier, /v1/verify, or their own checks without fully relying on the vendor portal. The Enterprise plan adds qualified eIDAS timestamps from Disig a.s.; the documentation states these carry a legal presumption of validity across the 27 EU member states. Its evidence framework covers contexts such as FRE 901/902, eIDAS Art. 41, and CPR 32, and also provides C2PA, a Provenance Certificate, and 8 integrity checks to address challenges around deepfakes and content tampering.

Deployment, Management, and Integration

On the browser side, it supports single-page capture, multi-tab sessions, and signed video evidence capture. The API supports single-URL capture, batch capture of 2–50 URLs, status queries, 24-hour pre-signed ZIP downloads, and HMAC-SHA256 webhooks. Evidence packages include ISO/IEC 27037-style forensic logs, chain_of_custody records, TLS, WHOIS, DNS, and other information, making them suitable for eDiscovery, brand protection scanning, and compliance archiving workflows.

Pricing, Pros, and Cons

The extension starts at US$8.99/month, with a 7-day trial requiring a credit card. The API offers a pay-as-you-go tier with no monthly fee, as well as US$99/US$499 monthly plans; batch pricing can fall to US$0.40 per capture. Its strengths are self-contained evidence packages, open verification, and rich capture materials. Limitations include the fact that final admissibility remains at the court’s discretion, qualified eIDAS timestamps are only available on the Enterprise plan, and the API documentation suggests it is still around the public beta stage.

Best Fit and Access from China

ProofSnap is suitable for legal teams, copyright enforcement, brand protection, compliance audits, and preservation of public webpages and social media content. It is less suitable for users who only need cheap screenshots or internal webpage monitoring. Access from mainland China and supported payment methods are not clearly stated. Because it involves Chrome/Edge extensions, YouTube demos, Bitcoin timestamps, and overseas APIs, real-world network connectivity should be tested. Alternatives include Page Vault, Pagefreezer, Wayback Machine, or traditional notarized evidence collection.