Company lists · Data refreshed September 2026

Top 15 Blockchain security consultants based in France

RevenueBase identified 52 company matches for blockchain security consultants associated with France as of September 2026 and tracks 206 professional contacts across them, including 59 with verified work emails. Paris is the largest hub.

This list covers company matches for blockchain security consultants associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
52Companies
206Contacts tracked
59Verified emails
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The 15 largest blockchain security consultants based in France

Ranked by team size
Top 15 of 52 company matches for blockchain security consultants based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchParis, FranceHQ recorded Sep 27, 202611-5028 contacts →

Exact match

“At Smart-Chain, we transform organizations using Blockchain technology.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchParis, FranceHQ recorded Sep 27, 202611-5028 contacts →

Exact match

“Fuzzinglabs is a cybersecurity startup specializing in vulnerability research, fuzzing, offensive and blockchain security.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchParis, FranceHQ recorded Sep 27, 202611-5021 contacts →

Exact match

“Dowsers : : provides cutting-edge cybersecurity solutions and services which enhance trust in new digital assets such as cryptocurrencies, NFTs, smart contracts and digital…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchParis, FranceHQ recorded Sep 27, 202611-5015 contacts →

Exact match

“Helping startups, corporates, and joint ventures innovate through top-tier consulting, prototyping, and R&D, with expertise in blockchains and safe & secure programming.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchParis, FranceHQ recorded Sep 27, 202611-5011 contacts →

Exact match

“Avicenne Studio is a blockchain engineering and consulting company focused on designing and deploying secure, scalable blockchain systems built for regulated environments.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchNeuilly-sur-seine, FranceHQ recorded Sep 27, 202611-505 contacts →

Exact match

“Dataxium, pure-player cybersécurité basé à Neuilly-sur-Seine, membre Campus Cyber, de l'ACN et labellisé France 2030.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchParis, FranceHQ recorded Sep 27, 20261-104 contacts →

Exact match

“Blockchains Experts offers leading cybersecurity services for blockchain.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchParis, FranceHQ recorded Sep 27, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchParis, FranceHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Chez SarahRo (SRO), nous sommes des experts en prestation de services blockchain.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchParis, FranceHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Willmann Technologies est un cabinet de conseil, spécialisé dans les nouvelles technologies.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchParis, FranceHQ recorded Sep 27, 202611-501 contacts →

Exact match

“Blockchain21 offers an ideal range of services to accompany you in your project around Blockchain technologies, NFTs and Web 3.0.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchLyon, FranceHQ recorded Sep 27, 20261-101 contacts →

Exact match

“Vérification de la sécurité des smart contracts, auditing Développement de smart contract sur toutes les EVMs”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchParis, FranceHQ recorded Sep 27, 20261-101 contacts →

Exact match

“BDataBChain provides consulting at both Data Engineering (and Data Ops by extension) and Blockchain Engineering (Ethereum Ecosystem, Polkadot Ecosystem, Solana, LINK.).”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchNice, FranceHQ recorded Sep 27, 20261-101 contacts →

Exact match

“AzurSafe is a French-based technology firm specializing in blockchain compliance, security, and audit solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchGaillard, FranceHQ recorded Sep 27, 20261-101 contacts →

Exact match

“Solving digital trust issues: artists legal e-signature for their NFT, patent for offline Bitcoin, CBDC transactions as for the digital yuan… Courses and consulting: Online…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 15 of 52 blockchain security consultants based in France

See the full list, filter by size, metro and specialty, and access 59 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Blockchain security consultants based in France at a glance

As of Sep 27, 2026
28.6%Verified-email coverage
4.0Average contacts per company
1-10Median size (employees)
55.8%Largest-city concentration · Paris
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
42
11-50
10

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 52 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with France whose business descriptions match “blockchain security consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 59 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “blockchain security consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many blockchain security consultants are there based in France?

RevenueBase identified 52 company matches for blockchain security consultants associated with France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Smartchain tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most blockchain security consultants?

Paris leads with 29 company records, followed by Lyon (3) and Bordeaux (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 59 professional contacts with verified work emails tracked across these 52 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.