Starter
For individuals and occasional use
290 € / year excl. VAT
350.90 € incl. 21% VAT
200proofs per year
- 3 devices (PCs)
- eIDAS qualified timestamp
- PDF document and ZIP package
Windows desktop app · Qualified eIDAS timestamp
Forensic web evidence that is easy to verify and hard to challenge
Browse as usual and capture whole sessions as one tamper-evident evidence package — screenshot, video, MHTML and network data. Save video and audio from any social network (YouTube, TikTok, Facebook, Instagram, X…) or website, and seal files and documents from your computer or a URL the same way, with a qualified eIDAS timestamp. Anyone can verify the evidence independently, without us.
Windows desktop application — runs on Windows PCs (not available for macOS or Linux). Recipients can verify the evidence on any system.
eIDAS qualified timestamp
Methodology with reference to ISO/IEC 27037
Independent verification
Three steps
How the Forensic Browser works
Three steps from opening a page to a sealed, independently verifiable evidence bundle.
1
Open and capture
Browse the web as in any browser. Capture a page with one click — full-page screenshot, session video, MHTML, HAR, DNS and the TLS chain. Save a video or audio from the page with another click.
2
Seal with eIDAS
The evidence is sealed with a qualified timestamp from an EU-listed qualified trust service provider under eIDAS. Changing a single byte of a sealed file breaks the seal.
3
Independent verification
Anyone can check the integrity with the open-source gpa-verify tool or standard RFC 3161 tooling — without our involvement. The evidence stands on its own.
New in version 1.6
Video and audio from social media and anywhere on the web
A video on any social network — TikTok, a Facebook or Instagram reel, YouTube, X — or a podcast on a news site: the “Save video” button adds the media to the running capture. You get the platform’s original file wherever the platform serves it, otherwise a recording of the playback. It is sealed together with the pages under ONE qualified timestamp and counts as one proof from the quota.
The platform’s original file
The app downloads the file exactly as the platform delivers it, in the session of its built-in browser — so it also works for content behind a login. Separate picture and sound are joined without re-encoding, and the original streams stay in the evidence.
Playback recording
Where the original cannot be downloaded, the app records the browser view and the page audio in real time — this works for anything that plays in the browser, except DRM-protected content. Never the whole screen and never the microphone. The report states that it is a playback recording, not the original file.
With the page and its context
Before the video, the page with the post is captured too — author, caption, comments. On short-video feeds (Reels, Shorts, TikTok) the app does not scroll, so the screenshot shows the same video that is being saved.
The report in 5 languages has a “Video & audio” section: where the media came from, platform data (ID, account, publication date), format, duration, SHA-256 and SHA-512 digests and four preview frames. gpa-verify verifies the media like the rest of the evidence.
Limits: up to 10 media items and 2 GB per proof, one file up to 1 GB, recordings up to 30 minutes (adjustable up to 3 hours). The PDF embeds media up to 100 MB (adjustable); larger media are saved next to the PDF as a companion ZIP whose digests are sealed in the PDF. DRM-protected content (Netflix, Spotify and similar) cannot be downloaded and may record as a black picture.
New in version 1.5
Files and documents, sealed like web pages
A contract, an invoice, a price list, a photo from a phone or an e-mail saved as a file: select one or more files and the application seals them into ONE evidence package with ONE qualified timestamp — it counts as one proof from your quota.
From your computer
Choose one or more files on your PC. Each is recorded with its SHA-256 and SHA-512 digests, size and the file type detected from its content.
From a URL, also behind a login
The application downloads the file through its own browser, so it works for documents in portals you are signed in to. It records the redirect chain, the server response, DNS and the server's certificate.
From your downloads
A file you downloaded while browsing can be sealed straight from the downloads panel. Its digest is taken right after the download; if the file changes before sealing, sealing is refused.
The same formats as for web pages (PDF, ZIP, or PDF plus a plain copy). The report, in 5 languages, lists for every file its digests, size, detected type and metadata — EXIF for photos, author and dates for PDF and Office documents — with a preview of photos. GPS coordinates are not printed in the report; they stay only in the sealed file. The open-source gpa-verify verifies these packages offline from version 1.7.0.
Limits: PDF formats up to 300 MB in total (above that the application offers ZIP), ZIP up to 2 GB, one file up to 1 GB (500 MB when downloaded from a URL), at most 200 files per proof.
Licences
Annual license
Licence and annual proof quota in one price, three devices included. Renews yearly; cancel anytime.
Pro
For lawyers and small practices
390 € / year excl. VAT
471.90 € incl. 21% VAT
600proofs per year
- 3 devices (PCs)
- eIDAS qualified timestamp
- PDF document and ZIP package
Practice
For active practices with higher volume
1090 € / year excl. VAT
1318.90 € incl. 21% VAT
2 500proofs per year
- 3 devices (PCs)
- eIDAS qualified timestamp
- PDF document and ZIP package
Business
For companies and investigation teams
1290 € / year excl. VAT
1560.90 € incl. 21% VAT
3 500proofs per year
- 3 devices (PCs)
- eIDAS qualified timestamp
- PDF document and ZIP package
Enterprise
For institutions and high volume
1790 € / year excl. VAT
2165.90 € incl. 21% VAT
5 500proofs per year
- 3 devices (PCs)
- eIDAS qualified timestamp
- PDF document and ZIP package
Custom
For authorities and specific needs
Custom quote
- Stamp quota by agreement
- Device count by agreement
- Priority support
Every licence includes
- Several subpages in one piece of evidence
- Screenshot, HTML, network trace (HAR), DNS, SHA-256 digests
- Optional session video and MHTML archive
- Video and audio from social networks (original file or playback recording)
- Files and documents from your PC or a URL
- Independent proof verification
The proof quota covers the whole licence year — use it whenever you need, even all of it on a single case.
Prices exclude VAT (Czech customers and EU consumers pay 21% VAT on top; EU businesses with a valid VAT ID: reverse charge). Annual subscription with automatic renewal, cancel anytime. After payment you receive your license key by e-mail along with a download link.
Built for evidence the other side will challenge
Every capture answers the three questions a court actually asks: is this really what was published, has it changed since, and how exactly was it obtained?
A whole session, not a single page
Walk through an e-shop, a profile or a series of listings and capture every subpage you need. All of them end up in ONE sealed evidence package with a single qualified timestamp — not a folder of unrelated files.
Two formats of evidence
Choose a ZIP evidence package for expert work with individual files, or a single PDF document that carries the qualified timestamp inside itself and validates in Adobe Reader. Same content, different container.
Full-page screenshot, HTML, network trace
Not just a picture. Every page is captured with its complete HTML source, network traffic (HAR) and DNS resolution — the source data that makes fabrication claims very hard to sustain.
Documented methodology
Browser and version, operating system, window size and every intervention the capture made in the page — including forcing lazy-loaded images to load. Stated openly, because concealing it would be a forensic defect.
Optional session video and MHTML
Record the whole session on video to show the operator's actual path through the site, and store each page as a self-contained MHTML archive. Both optional, both sealed with everything else.
Verification without us
The ZIP package carries the timestamping authority's certificates and a snapshot of the trusted list that lists it, so an expert verifies it offline — without contacting us and without trusting us. From version 1.5.2 the PDF embeds the certificate chain and revocation responses as well (PAdES long-term validation) when the timestamp provider's validation services are reachable at sealing — otherwise the PDF is issued without LTV and the ZIP serves for long-term verification. With LTV, Adobe Acrobat Reader shows the timestamp as LTV-enabled, and it stays verifiable after the authority's certificate expires.
Two ways to hand over the evidence
Both carry the same artefacts and the same eIDAS qualified timestamp. Switch between them in the application's settings.
PDF document
RecommendedOne file. The qualified timestamp is embedded inside the document and covers the whole file including attachments. Adobe Acrobat Reader shows the validity — the recipient needs no tools at all. Screenshots, HTML, network trace and manifest travel inside as attachments in full quality.
- Opens and validates in Adobe Acrobat Reader
- Single file for the data box, case file and archive
- Standardised format (PAdES, ETSI EN 319 142)
ZIP evidence package
For expert workIndividual files with a manifest of SHA-256 digests. Every artefact is directly accessible without extraction, which suits expert examination and machine processing. Verified with the open-source gpa-verify tool or plain openssl.
- Direct access to every artefact
- Manifest with digests of all files
- Verifiable with openssl or gpa-verify
What every evidence package contains
Both formats carry the same captured artefacts. The long-term validation data differ: the ZIP carries the authority's certificates and the trusted-list snapshot (marked ZIP), the PDF embeds the certificate chain and revocation data (from version 1.5.2).
- Full-page screenshot of every captured subpage
- Complete HTML source of every page
- Network traffic (HAR) and DNS resolution
- Capture methodology — tool, browser, system, interventions
- eIDAS qualified timestamp from a qualified trust service provider
- ZIP: certificates of the timestamping authority · PDF (from version 1.5.2): certificate chain and revocation data (OCSP, CRL) embedded for long-term validation
- ZIP: snapshot of the trusted list that lists the timestamping authority
- Manifest with SHA-256 digests of all files
- Human-readable report (5 languages)
- Optional: session video, MHTML archive of each page, saved video and audio (original file or playback recording) with preview frames
See a real evidence package
On request we send you a genuine package produced by the application, so you can check it yourself — including the timestamp. Nothing is simulated.
Sample — PDF document
RecommendedA single file containing everything. Open it in Adobe Acrobat Reader — a blue bar at the top confirms the valid qualified timestamp, and the paperclip icon on the left reveals the attachments: full-quality screenshots, page source, network traffic and the manifest of digests. No other tool required.
Sample — ZIP package
For expert workThe same evidence laid out as separate files. Every artefact is directly accessible without extraction, which suits expert examination and machine processing. Inside you'll find the timestamping authority's certificates and a snapshot of the trusted list that lists the authority, so the timestamp can be verified without an internet connection.
Both samples are genuine evidence produced by the application — nothing is simulated. You can also verify them with our open-source tool: pip install gpa-verify
Frequently asked questions
Does the recipient need any software to verify the evidence?
With the PDF format, no. Adobe Acrobat Reader shows the qualified timestamp validity when the document is opened, without any configuration. With the ZIP package, verification is done using the open-source gpa-verify tool or plain openssl against the certificates enclosed in the package.
Does the application work without an internet connection?
Capturing a page requires a connection — the page has to be loaded — and issuing the qualified timestamp needs to reach the trust service provider. Verifying a finished ZIP package works offline: the certificates and the trusted-list snapshot travel inside it. A PDF from version 1.5.2 carries the certificates and revocation data itself, so Adobe Acrobat Reader does not need to contact the authority; it still relies on its own trust lists, which it keeps up to date when online. gpa-verify checks the PDF offline.
Can I capture pages that require a login?
Yes. You browse in the application as in an ordinary browser, so you sign in normally and capture what your session actually sees — including private groups, member areas and internal systems.
How many devices does one licence cover?
Three devices. If you need more, you can extend the licence to 50 devices at any time from the subscription management page — the difference is prorated for the rest of the period.
What happens when the annual quota runs out?
New captures pause until the next licence year starts, or you switch to a higher plan, which takes effect immediately. Previously created evidence remains valid and verifiable regardless of the plan.
Is the evidence still verifiable if GetProofAnchor ceases to exist?
Yes, that is a deliberate design goal. The verification tool is open source, the ZIP package is self-contained, and the qualified timestamp validates against the trust service provider's certificate chain independently of us. Both formats are suitable for evidence that must remain verifiable for many years: from version 1.5.2 the PDF embeds long-term validation data (LTV) when the timestamp provider's validation services are reachable at sealing, and the ZIP additionally carries the trusted-list snapshot. For a PDF without LTV — made by an earlier version or sealed while those services were unavailable — keep the ZIP as well.
Secure the evidence before it disappears
An annual licence with a proof quota for three devices. Change the plan or add devices at any time.
Already have a licence?
Change your plan, extend the device limit, download invoices or cancel — all in one place, no account needed.