SiteWitness

Preserve a Webpage.Prove It Existed.

Capture permanent, verifiable snapshots of any webpage with cryptographic proof and blockchain timestamping.

Capture a Snapshot
Enter a URL to preserve with cryptographic proof

Enter a domain like example.com or a full URL like https://example.com/page

How SiteWitness Works

Our advanced technology creates tamper-proof snapshots with cryptographic verification

Full HTML Capture
We capture the complete HTML structure and content of the webpage, preserving all text, links, and metadata.
Visual Screenshot
Optional high-resolution screenshots provide visual evidence of exactly how the page appeared at capture time.
SHA-256 Hashing
We generate a unique cryptographic fingerprint of your snapshot that proves the content hasn't been altered.
Blockchain Timestamping
Using OpenTimestamps, we anchor your snapshot to multiple blockchains, providing indisputable proof of when it was captured.
Secure Storage
All snapshots are securely stored with redundant backups, ensuring your evidence is always available when you need it.
Permanent Links
Each snapshot gets a unique, permanent URL that you can share, archive, or submit as documentation.

Trusted by Professionals

See why journalists, researchers, and digital professionals rely on SiteWitness

"SiteWitness has been invaluable for my investigative reporting. I've used it to document statements that were later deleted, providing reliable evidence for my stories."

JD

Jamie Donovan

Investigative Journalist

"As a digital forensics expert, I need tools I can trust. SiteWitness provides the cryptographic proof and documentation that meets my professional standards."

MR

Dr. Michael Rodriguez

Digital Forensics Expert

"For academic research, having verifiable citations of web content is crucial. SiteWitness helps me create permanent references to online sources that might otherwise change or disappear."

SL

Sarah Lin, Ph.D.

Research Professor