papertrail

Verified company intelligence from legal filings.

Papertrail extracts real revenue, ownership, and vendor data from official EU registries and GDPR disclosures. Not estimates. Every number links back to its legal source.

Designed for humans and agents.

example lookup
$ curl "https://api.viapapertrail.com/v1/lookup?url=example-saas.com"
"entity": "Techno Tech GmbH",
"jurisdiction": "Berlin, Germany",
"registration": "HRB 12345",
"revenue": "EUR 4.2M",
"revenue_source": "Bundesanzeiger",
"gdpr_controller": "Techno Tech GmbH",
"tech_stack": [
"Stripe", "Intercom", "Segment"
],
"shareholders": ["M. Schmidt, K. Weber"]
example-saas.com
Legal entity
Techno Tech GmbH
Berlin, Germany · HRB 12345
Revenue
EUR 4.2M
Bundesanzeiger ↗
GDPR Controller
Techno Tech GmbH
Privacy Policy ↗
Tech stack
Stripe Intercom Segment
Subprocessor List ↗
Shareholders
M. Schmidt, K. Weber
Legal Filings ↗

The problem

Revenue estimates are guesswork. Crunchbase, PitchBook, and similar platforms estimate revenue using models and proxies. For private companies, these numbers can be off by 5x or more.

Tech stack data is scraped, not sourced. Most vendor intelligence tools crawl websites for script tags and DNS records. They miss the internal stack and cannot tell you what a company actually pays for.

Ownership is stale or missing. Shareholder data on private companies is either old, inferred from Linkedin, or simply unavailable.

How it works

Terms & imprint. We extract entity information from terms of service and imprint data to identify the real company behind a website.

GDPR & CCPA disclosures. Privacy policies are legally required to name the data controller and list subprocessors. We surface both, giving you the legal entity and their full vendor stack.

Official filings. For EU companies, we pull verified revenue and ownership data from public registries like Bundesanzeiger, Companies House, and SIRENE.

Every data point is verifiable. We always link back to the original source so you can check it yourself.

Use cases

Investment analysis. Get real revenue trajectories and ownership data even for private EU companies. No estimates, no inferred data, just audited numbers from tax authorities.

Sales & marketing. See who's using your competitors with legally-required, up-to-date vendor lists sourced from subprocessor disclosures.

Vendor due diligence. Reduce compliance risk with systematized reports. Track material changes in real-time, with every data point linked to its legal source.

What you get

Legal entity
Company name, jurisdiction, registration number
Revenue
Audited figures from official registries
Tech stack
From subprocessor lists in privacy policies
Shareholders
Ownership data from public filings

Pricing

Pay as you go
$4.99/100 checks
30 checks included free
Subscription
$499/mo
Unlimited checks + API

Free during beta.

Join the beta

Get free early access and shape the product.

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