DIRECTORY / OPEN SOURCES

Public sources for verifiable OSINT research

Thirty starting points for researching an entity, legal text, dataset, image or web trace, with each service’s evidentiary limit.

Search sources

01 / Choose a source for the question

Choose a source for the question

A register records what was filed or published. An archive shows a capture. A map represents a dataset. None alone establishes every aspect of a claim. Define the question, jurisdiction and period, then retain the URL and access date.

02 / DIRECTORY / OPEN SOURCES

30 sources

30 sources
Entities and filingsFR

Annuaire des Entreprises

What to check
Find a French entity by name, SIREN or SIRET and compare administrative records.
What it does not prove
This is an aggregator: check dates and the original register before drawing conclusions.
Open official service
Entities and filingsFR

DATA INPI

What to check
Consult France’s national business register data, trademarks, patents and designs.
What it does not prove
Read each registration or filing with its status, date and protection scope.
Open official service
Entities and filingsFR

BODACC

What to check
Search French civil and commercial notices by company, SIREN, category and publication date.
What it does not prove
A notice records a published event; it does not describe the entity’s entire current activity.
Open official service
Law and legal textsFR

Légifrance

What to check
Find French statutes, codes and court decisions, including text versions.
What it does not prove
Use the version applicable on the relevant date and distinguish law from commentary.
Open official service
Data and procurementFR

data.gouv.fr

What to check
Discover datasets and APIs published by French authorities and other producers.
What it does not prove
Check the chosen dataset’s publisher, coverage, licence, method and last update.
Open official service
Law and legal textsEU

EUR-Lex

What to check
Consult the Official Journal and European Union legal acts.
What it does not prove
Check the act, version, entry into force and relationship with national law.
Open official service
Entities and filingsEU

EU Transparency Register

What to check
Identify interest representatives registered with EU institutions.
What it does not prove
Registrants provide their own data; absence and accuracy both require caution.
Open official service
Data and procurementEU

TED — Tenders Electronic Daily

What to check
Explore published European public procurement notices, tenders and awards.
What it does not prove
A notice does not prove contract delivery or outcome; read its stage and linked documents.
Open official service
Data and procurementEU

data.europa.eu

What to check
Search datasets indexed by the European data portal.
What it does not prove
The portal indexes metadata: open the publisher and check coverage and freshness.
Open official service
Entities and filingsUK

Companies House

What to check
View UK companies, officers, accounts and public filing history.
What it does not prove
Companies House states that it does not check the accuracy of filed information.
Open official service
Entities and filingsUS

SEC EDGAR

What to check
Search filings submitted to the US securities regulator.
What it does not prove
Read a filing with its period, form type and any amendments.
Open official service
Web and archivesINT

ICANN Lookup

What to check
Query public domain, IP network and ASN registration data through RDAP.
What it does not prove
Some data may be redacted; registration does not prove who operates a website.
Open official service
Web and archivesINT

Wayback Machine

What to check
Compare dated web-page captures and retain a link to a viewable version.
What it does not prove
Captures can be partial; their date and content do not validate the page’s claims.
Open official service
Geography and imageryFR

cartes.gouv.fr

What to check
Explore IGN maps, aerial photography and public territorial layers.
What it does not prove
Check each layer’s origin, scale and date before comparing places.
Open official service
Geography and imageryEU

Copernicus Browser

What to check
View and compare satellite imagery and metadata over time.
What it does not prove
Cloud cover, resolution, processing and acquisition date constrain interpretation.
Open official service
Geography and imageryINT

NASA Worldview

What to check
Browse Earth observation layers and compare dates or phenomena.
What it does not prove
A coloured visual depends on its layer and is not itself a ground measurement.
Open official service
Intellectual propertyINT

WIPO Global Brand Database

What to check
Search trademarks and related signs across participating international and national collections.
What it does not prove
Coverage varies; also check national registers and each mark’s status.
Open official service
Intellectual propertyINT

Espacenet

What to check
Search patent publications and trace technical developments across countries.
What it does not prove
A publication does not prove an enforceable patent: check family, territory and status.
Open official service
Entities and filingsFR

Avis de situation Sirene · Insee

What to check
Use a SIREN or SIRET to obtain an identity record for an entity in France’s Sirene register.
What it does not prove
Insee states that this status notice has no legal force.
Open official service
Entities and filingsFR

HATVP · Répertoire des représentants d’intérêts

What to check
Review French interest-representative declarations, organisations and reported activities.
What it does not prove
Reporting rules define coverage; absence or declared detail does not capture every form of influence.
Open official service
Entities and filingsEU

European e-Justice · Find a company

What to check
Search interconnected business registers in the EU and selected EEA countries through BRIS.
What it does not prove
Covered company forms and documents vary by national register; inspect the originating record.
Open official service
Law and legal textsUK

legislation.gov.uk

What to check
Search UK legislation in original and revised versions.
What it does not prove
The site does not hold every type of legislation; check amendment status and commencement.
Open official service
Data and procurementUS

USAspending.gov

What to check
Explore published US federal spending, contract and assistance award data.
What it does not prove
Check definitions, reporting thresholds, corrections and lag before comparing amounts.
Open official service
Intellectual propertyEU

EUIPO · TMview

What to check
Compare trademark applications and registrations from participating offices, including across the EU.
What it does not prove
A result alone establishes neither conflict nor availability; territory, classes and prior rights matter.
Open official service
Data and procurementEU

Eurostat · Data Browser

What to check
Compare European statistical series using dataset codes, dimensions, units and metadata.
What it does not prove
Check method, revisions and coverage; the live database may not retain past versions.
Open official service
Data and procurementEU

CORDIS

What to check
Find EU framework-funded research projects, participants, reports and published deliverables.
What it does not prove
Funding or a project summary does not prove industrial results or market launch; read dated deliverables.
Open official service
Data and procurementUK

Find a Tender · UK

What to check
Search UK public procurement notices and their published stages.
What it does not prove
Coverage varies by period, threshold and nation; a notice alone does not confirm contract performance.
Open official service
Data and procurementUS

SAM.gov · Contract opportunities

What to check
Search U.S. federal contract opportunities by agency, category and status.
What it does not prove
An open opportunity is neither an award nor a payment; cross-check award records and dates.
Open official service
Intellectual propertyEU

European Patent Register · EPO

What to check
Check procedural stages, grant, opposition and legal information for a published European application.
What it does not prove
Post-grant national status can vary; consult relevant national registers and date the observation.
Open official service
Intellectual propertyINT

WIPO · PATENTSCOPE

What to check
Search published PCT international applications and documents from participating national or regional offices.
What it does not prove
A PCT publication is not a worldwide patent; check national phases, grants and territories.
Open official service

Independent, non-exhaustive selection. Links identify public services or services operated by their institutions; they imply no partnership. Descriptions checked September 2026.

03 / OSINT

Eight routes for cross-checking

Each route starts with a real question and opens services in a useful order. Its final note keeps conclusions proportional.

01

Check a French company

Compare identifier, registration and published notices rather than relying on a trade name.

  1. Annuaire des Entreprises
  2. DATA INPI
  3. BODACC
Before concluding

Matching registers document filings, not necessarily today’s actual operations.

02

Find the applicable rule

Separate French and EU law, then record the version in force on the relevant date.

  1. Légifrance
  2. EUR-Lex
Before concluding

A current consolidated text or summary does not replace the version applicable to the period.

04

Explore a name or invention

Search relevant trademark collections, then distinguish patents from commercial signs.

  1. WIPO Global Brand Database
  2. DATA INPI
  3. Espacenet
Before concluding

A filing alone establishes neither current validity nor freedom to operate.

05

Reconstruct a web presence

Compare current domain registration with archived versions of a precise page.

  1. ICANN Lookup
  2. Wayback Machine
Before concluding

Domain registrant and content author may differ; captures remain partial.

06

Locate an image or change

Compare map landmarks, satellite acquisitions and observation layers with their dates.

  1. cartes.gouv.fr
  2. Copernicus Browser
  3. NASA Worldview
Before concluding

Views with different resolutions and processing cannot be treated as identical photographs.

07

Contextualise an EU research project

Find the project and deliverables in CORDIS, then select Eurostat statistics by dataset code and period for context.

  1. Eurostat · Data Browser
  2. CORDIS
  3. data.europa.eu
Before concluding

Sector statistics do not measure project success; a deliverable is not necessarily a product.

08

Trace a patent lead to its status

Start with an Espacenet publication, look up any relevant PCT application in PATENTSCOPE, then check the European procedure in the EPO Register.

  1. Espacenet
  2. WIPO · PATENTSCOPE
  3. European Patent Register · EPO
Before concluding

A family links publications; protection depends on each application, grant and territory.

OSINT / Keep

What evidence record should you retain?

A screenshot alone is hard to check. These eight templates identify the minimum fields another reader needs to reproduce a source check.

01

Company and establishment

Keep
SIREN, relevant SIRET, record or notice URL, access date and displayed status.
Interpretation limit
A legal unit and its establishment differ; a current record alone does not reconstruct every past date.
Avis de situation Sirene · Insee
02

Procurement notice

Keep
Notice identifier and type, buyer, lot, publication and correction dates, consulted version.
Interpretation limit
A call for bids, an award and evidence of delivery are different stages.
TED — Tenders Electronic Daily
03

Domain registration

Keep
Exact name, dated RDAP response, statuses, queried server and any links from an official site.
Interpretation limit
Redacted fields, intermediaries and hosts often prevent identification of the actual operator.
ICANN Lookup
04

Archived web page

Keep
Original URL, capture URL, capture time and any missing or incomplete page elements.
Interpretation limit
An archive shows a retrieved version at a time, not content accuracy or its creation date.
Wayback Machine
05

Satellite image

Keep
Product identifier, sensor, acquisition date, area, resolution, cloud cover and processing applied.
Interpretation limit
Publication and acquisition dates differ; inspect clouds over the precise area of interest.
Copernicus Browser
06

Patent publication

Keep
Publication number, priority, applicant, family, territory and dated register status.
Interpretation limit
Publication does not mean grant in every country or a marketed product.
Espacenet
07

Statistical series

Keep
Dataset code, selected dimensions, unit, period, source, extraction date and method note.
Interpretation limit
Revisions may change figures; compare extracts using the same scope and method.
Eurostat · Data Browser
08

Research project

Keep
Project identifier, programme, partners, dates, exact deliverable and version or publication date.
Interpretation limit
Funding and stated objectives do not establish completion or commercial adoption.
CORDIS

04 / OSINT

Four checks before a conclusion

The same discipline applies to a company register, satellite image or archived page.

01

Define the question

State the claim, exact entity, period and jurisdiction. Avoid searching only a common name.

02

Find the primary record

Use a stable identifier and open the act, notice, filing or dataset beyond the search snippet.

03

Keep the context

Record URL, publisher, publication or acquisition date, access date, version and status.

04

Corroborate

Compare with an independent source and separate established fact, declaration, clue, no result and hypothesis.

05 / FAQ

Method questions

Does no result mean an entity or event does not exist?

No. Coverage, publication delays, name variants and jurisdiction may explain it. Record the search and try other identifiers or registers.

Is an archive capture conclusive proof?

It documents a captured version and supports dated comparison. It does not certify the content’s truth or the site’s completeness.

How should a register be cited?

Keep the precise document URL, entity identifier, document date, version or status and access date. A search-results page alone is fragile.

Are all listed services free and available without an account?

Access varies by service, feature and volume. Some tools, including Copernicus Browser, may require a free account. Check the source’s terms.

Why do two Eurostat extracts show different figures?

The dataset may have been revised, or selected dimensions, units and periods may differ. Keep the code, selections, extraction date and method note before comparing.

Does a PCT application create a patent valid in every country?

No. PATENTSCOPE documents the international publication, among other records. Protection depends on subsequent procedures, decisions and territories; check the relevant registers.