Per case or per batch
Private archives + evidence packs included
Third-party TSA issued
This article provides general information about evidence preservation tools and is not legal advice. Consult an attorney for guidance on specific litigation matters.
- Traditional forensic evidence tools cost $500–$5,000+ per case
- Kiroku Pro provides RFC 3161 timestamps, SHA-256 hashes, and evidence pack ZIPs for $12/month
- Private archiving prevents the opposing party from discovering your evidence collection
- RFC 3161 timestamps are issued by trusted third-party Time-Stamp Authorities, providing court-grade time verification
Legal professionals increasingly need to preserve web evidence for litigation, defamation cases, copyright disputes, and regulatory compliance. Traditional forensic tools charge thousands per case. Kiroku Pro offers RFC 3161 timestamped evidence packs, private archiving, and URL monitoring for $12/month — making professional-grade evidence preservation accessible to solo practitioners and large firms alike.
Preserving web evidence is critical across legal practice areas — from defamation and harassment cases to intellectual property disputes, advertising compliance, and employment law. Traditional forensic tools designed for this purpose often charge hundreds or thousands of dollars per case, putting professional-grade evidence out of reach for many practitioners.
This article compares the cost and evidence quality of web archiving approaches available to legal professionals, with a focus on what courts require: verifiable timestamps, tamper detection, full-page preservation, and chain-of-custody documentation.
Who needs professional web evidence preservation?
Web evidence preservation is no longer a niche concern. Lawyers, compliance officers, and in-house counsel routinely need to capture web pages before content is deleted, modified, or taken down. The challenge is that screenshots alone are increasingly insufficient — courts expect verifiable metadata, tamper detection, and complete page captures.
The users who pay for professional archiving services are typically litigation attorneys handling defamation or IP cases, corporate legal teams monitoring regulatory compliance, law enforcement preparing digital evidence packages, and HR departments documenting workplace-related online content.
- Defamation and online harassment attorneys — preserving posts before deletion
- Intellectual property lawyers — documenting copyright and trademark infringement
- Corporate compliance teams — tracking advertising claims and policy changes
- Employment attorneys — capturing job listings, company statements, and social media posts
- Real estate and financial lawyers — preserving misleading listings or terms
Cost comparison: forensic tools vs Kiroku Pro
The following table compares the cost and capabilities of common evidence preservation methods available to legal professionals.
| Method | Cost | RFC 3161 | SHA-256 | Private | Full-page HTML |
|---|---|---|---|---|---|
| Screenshots only | Free | × | × | — | × |
| PDF print | Free | × | × | — | Partial |
| Wayback Machine | Free | × | × | × | ○ |
| Forensic tools (enterprise) | $500–$5,000/case | ○ | ○ | ○ | ○ |
| Notarized screen capture | $200–$1,000/session | — | × | ○ | Partial |
| Kiroku Pro | $12/month | ○ | ○ | ○ | ○ |
A forensic tool handling 10 cases per year could cost $5,000–$50,000. Kiroku Pro costs $144/year for unlimited evidence packs with RFC 3161 timestamps — a fraction of traditional approaches.
What is RFC 3161 and why does it matter in court?
RFC 3161 is a Time-Stamp Protocol standardized by the IETF. A trusted third-party Time-Stamp Authority (TSA) signs a hash of the archived content with a cryptographic timestamp, proving that specific content existed at a specific point in time. This is mathematically verifiable and cannot be backdated.
In legal contexts, RFC 3161 timestamps serve a similar function to a notary public's certification of a document's existence at a given time — but at a fraction of the cost and without requiring physical presence. The timestamp response (.tsr file) can be independently verified by any party using standard cryptographic tools.
Kiroku Pro issues RFC 3161 timestamps when you request an evidence pack. The evidence pack ZIP includes the timestamp request (.tsq), timestamp response (.tsr), and a summary JSON — all independently verifiable.
A notarized screen capture costs $200–$1,000 per session and requires scheduling. RFC 3161 timestamps are issued instantly and included in Kiroku Pro's monthly fee. While legal weight varies by jurisdiction, the cryptographic verification of RFC 3161 is actually stronger than a notary's visual observation.
What's inside a Kiroku evidence pack?
Each evidence pack is a single ZIP file containing everything needed for court submission or attorney review.
- archive.html — Self-contained full-page HTML (CSS and images inlined, JavaScript removed)
- screenshot.jpg — High-resolution full-page screenshot (up to 15,000px height)
- capture-manifest.json — Capture metadata (URL, timestamp, parameters)
- capture-manifest.sha256 — SHA-256 hash of the manifest
- timestamp-request.tsq — RFC 3161 timestamp request
- timestamp-response.tsr — RFC 3161 timestamp response (signed by third-party TSA)
- timestamp-summary.json — Human-readable timestamp summary
- extracted-text.txt — Full text extraction for search and quotation
- summary-ja.txt / summary-en.txt — AI-generated summaries
- metadata.json — Structured metadata
- checksums.sha256 — SHA-256 hashes of all files in the pack
- README.txt — Verification instructions
Why private archiving matters for litigation
One of the most overlooked aspects of evidence preservation is whether the opposing party can discover that you're collecting evidence. Free archiving services like the Wayback Machine make all archives publicly searchable. If the opposing party searches for their domain, they may discover your evidence collection efforts.
Early discovery of evidence preservation can trigger content deletion, account lockdowns, or changes in settlement posture. In pre-litigation phases, the ability to preserve evidence without alerting the opposing party is a significant tactical advantage.
Kiroku Pro's private archives are visible only to the account holder. They do not appear in search results, sitemaps, or public listings. The opposing party has no way to discover that their content has been preserved.
When using free public archiving services, the opposing party can search for their domain and find your preservation history. This can trigger evidence spoliation or change litigation dynamics. Private archiving eliminates this risk.
Legal use cases
Preserve social media posts, forum comments, and review site content before deletion. Private archiving prevents the harasser from discovering your evidence collection. URL monitoring alerts you if content is edited or removed.
Document unauthorized use of copyrighted content across multiple pages. Archive both the original and infringing pages, then use diff view to demonstrate content similarity.
Capture misleading product claims, false advertising, or regulatory violations. URL monitoring tracks changes to advertising content over time, documenting a pattern of deceptive practices.
Monitor terms of service, privacy policies, and pricing pages for changes. When terms change, both the before and after versions are preserved with timestamps, creating a clear record of when changes occurred.
Preserve job postings that differ from actual employment conditions, company statements about workplace policies, and publicly available content relevant to workplace disputes.
Practical workflow for legal professionals
From the Kiroku Pro dashboard, select 'Save privately' and enter the URL. The archive is visible only to your account.
For critical pages, enable URL monitoring. You'll receive email notifications when content changes, with automatic new archives created.
Once the archive is complete, request an evidence pack from the archive detail page. The RFC 3161 timestamp is obtained automatically.
Download the evidence pack ZIP and store it in your case management system. Use checksums.sha256 to verify integrity at any time.
Include the HTML, screenshot, and timestamp response files as exhibits. The README.txt explains the verification procedure for the court.
Summary
Legal professionals increasingly need to preserve web evidence for litigation, defamation cases, copyright disputes, and regulatory compliance. Traditional forensic tools charge thousands per case. Kiroku Pro offers RFC 3161 timestamped evidence packs, private archiving, and URL monitoring for $12/month — making professional-grade evidence preservation accessible to solo practitioners and large firms alike.
FAQ
Is a Kiroku evidence pack admissible in court?
Kiroku evidence packs include SHA-256 hashes, RFC 3161 timestamps, full-page HTML, and screenshots — all technical elements that support evidence authenticity. However, admissibility ultimately depends on the jurisdiction and court. Consult your attorney about specific evidentiary requirements.
Can RFC 3161 timestamps replace a notary?
RFC 3161 timestamps provide cryptographically verifiable proof of when content was captured — technically stronger than a notary's visual observation. However, legal recognition varies by jurisdiction. For critical evidence, consider using both approaches: Kiroku Pro for routine preservation and a notary for the most important items.
Can the opposing party find my private archives?
No. Private archives in Kiroku Pro are visible only to the account holder. They do not appear in search engines, Kiroku's public search, or sitemaps. The opposing party cannot discover your evidence collection.
Can I archive X (Twitter) posts as evidence?
Yes. Kiroku supports dedicated X post archiving that captures the full post text, author name, timestamp, quoted posts, and attached images. Pro users can save these privately and request evidence packs with RFC 3161 timestamps.
What if I need to archive thousands of pages?
Kiroku Pro is designed for professional-grade usage within fair use limits. For extremely large-volume needs, contact Pro support through the dashboard to discuss your requirements.
Sources
- IETF RFC 3161 — Time-Stamp Protocolhttps://datatracker.ietf.org/doc/html/rfc3161
- American Bar Association — Digital Evidence Best Practiceshttps://www.americanbar.org/
Reduce your evidence preservation costs
Kiroku Pro gives you private archiving, RFC 3161 timestamps, and evidence pack ZIPs for $12/month — a fraction of traditional forensic tools.