Company lists · Data refreshed September 2026

Top 25 Blockchain developer marketing firms based in France

Name: Blockchain developer marketing firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 189 companies tracked

RevenueBase identified 189 blockchain developer marketing firms headquartered in France as of September 2026 and tracks 526 professional contacts across them, including 96 with verified work emails. Paris is the largest hub.

This list covers blockchain developer marketing firms headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

189Companies

526Contacts tracked

96Verified emails

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The 25 largest blockchain developer marketing firms based in France

Ranked by team size

Top 25 of 189 blockchain developer marketing firms based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to blockchain developer marketing firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Smartchain	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “At Smart-Chain, we transform organizations using Blockchain technology.” Source: RevenueBase Database · checked Sep 19, 2026
2	Just Happiness	Indirect evidence	Grabels, FranceHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Creative agency.” Source: RevenueBase Database · checked Sep 19, 2026
3	D&a Partners	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “d&a partners est le cabinet d’avocats des entrepreneurs de la tech, de la blockchain et de la finance numérique.” Source: RevenueBase Database · checked Sep 19, 2026
4	Auteuil	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence “Web experiences for best companies” Source: RevenueBase Database · checked Sep 19, 2026
5	Functori	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Helping startups, corporates, and joint ventures innovate through top-tier consulting, prototyping, and R&D, with expertise in blockchains and safe & secure programming.” Source: RevenueBase Database · checked Sep 19, 2026
6	Avicenne Studio	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “Avicenne Studio is a blockchain engineering and consulting company focused on designing and deploying secure, scalable blockchain systems built for regulated environments.” Source: RevenueBase Database · checked Sep 19, 2026
7	Markchain	Strong evidence	Rennes, FranceHQ checked Sep 19, 2026	1-10	7 contacts →
	Strong evidence “Innovative #Marketing & #PR Solutions for your #blockchain firm Sharing here insightful crypto info, project update & #PressRelease you don't want to miss” Source: RevenueBase Database · checked Sep 19, 2026
8	Kafécom	Indirect evidence	Fontenay-le-comte, FranceHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “17 ans d'existence, 5 collaborateurs en CDI et un réseau de prestataires spécialistes : Kafécom est une agence de communication implantée en Vendée qui accompagne les entreprises…” Source: RevenueBase Database · checked Sep 19, 2026
9	Jarvix	Partial evidence	Mouans-sartoux, FranceHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Web3 Creative Studio Discover the blockchain, evolve into its ecosystem and build with us innovative Web3 solutions!” Source: RevenueBase Database · checked Sep 19, 2026
10	W3rone	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “At W3r.one, we transform your ideas into digital reality with our expertise in web, mobile, and blockchain development.” Source: RevenueBase Database · checked Sep 19, 2026
11	Wagmi Studio	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Nous sommes une agence native web3 qui accompagne les entreprises de bout en bout dans leur transition vers le Web3 et qui développe des outils qui favorisent l'adoption grand…” Source: RevenueBase Database · checked Sep 19, 2026
12	Homeety	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	5 contacts →
	Strong evidence “Homeety Marketing 3D via la Blockchain et l’IA -> Conception et déploiement de stratégies Marketing 3.0 sur-mesures -> Création d’expériences immersives et exclusives en 3D sur…” Source: RevenueBase Database · checked Sep 19, 2026
13	Ceres Advisory Rainbow Partners Group	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 19, 2026
14	The Blockchain Group	Partial evidence	Puteaux, FranceHQ checked Sep 19, 2026	201-500	4 contacts →
	Partial evidence “The Blockchain Group is the French leader in blockchain technology support, on a mission to democratize blockchain and support valuable deeptech projects.” Source: RevenueBase Database · checked Sep 19, 2026
15	ERA 2140	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “ERA2140 is the agency that helps companies build blockchain projects from idea to commercialization- Consulting - Tokenomics & Game Economics - Blockchain Dev (Solidity, Rust)-…” Source: RevenueBase Database · checked Sep 19, 2026
16	Passion Graphic	Partial evidence	Roissy En Brie, FranceHQ checked Sep 19, 2026	11-50	3 contacts →
	Partial evidence “PASSION GRAPHIC is a marketing and advertising company based out of ZONE INDUSTRIELLE DES 50 ARPENTS 11 RUE DENIS PAPIN, ROISSY EN BRIE, France.” Source: RevenueBase Database · checked Sep 19, 2026
17	CSIDE	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “CSIDE is a Science & Innovation Marketing Studio based in Paris, helping companies transform expertise, technology and ideas into meaningful market impact.” Source: RevenueBase Database · checked Sep 19, 2026
18	Blockchain EZ	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
19	Sarahro SRO	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Chez SarahRo (SRO), nous sommes des experts en prestation de services blockchain.” Source: RevenueBase Database · checked Sep 19, 2026
20	Promo-Buzz	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Promo-Buzz is a marketing and advertising company based out of TOUR BERYL 40 AVENUE D ITALIE, PARIS, France.” Source: RevenueBase Database · checked Sep 19, 2026
21	ICL	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “InCryptoland Marketing & Communications helps crypto startups and established brands to build the Go-To-Market Strategy, Content Marketing with SEO, Media Buy, and Public…” Source: RevenueBase Database · checked Sep 19, 2026
22	Blockchain 21	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	1 contacts →
	Partial evidence “Blockchain21 offers an ideal range of services to accompany you in your project around Blockchain technologies, NFTs and Web 3.0.” Source: RevenueBase Database · checked Sep 19, 2026
23	Azursafe	Partial evidence	Nice, FranceHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “AzurSafe is a French-based technology firm specializing in blockchain compliance, security, and audit solutions.” Source: RevenueBase Database · checked Sep 19, 2026
24	Very Good Factory	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “VERY GOOD FACTORY is a marketing and advertising company based out of 20 RUE CAMBON, Paris, Îledefrance, France.” Source: RevenueBase Database · checked Sep 19, 2026
25	Cryptos Services	Indirect evidence	Campagne-lès-hesdin, FranceHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Cryptos Services est votre partenaire de confiance pour vous guider vers les meilleures solutions technologiques adaptées à votre activité.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: blockchain developer marketing firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names blockchain developer marketing firms.
Partial evidence: Its own public description names part of blockchain developer marketing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name blockchain developer marketing firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 189 blockchain developer marketing firms based in France

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Blockchain developer marketing firms based in France at a glance

As of Sep 19, 2026

18.3%Verified-email coverage

2.8Average contacts per company

1-10Median size (employees)

40.2%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

159

11-50

51-200

201-500

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 189 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among blockchain developer marketing firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “blockchain developer marketing firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names blockchain developer marketing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among blockchain developer marketing firms, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 96 across the full list. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Blockchain developer marketing firms by metro

Blockchain developer marketing firms in Paris76

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names blockchain developer marketing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many blockchain developer marketing firms are there based in France?

RevenueBase identified 189 blockchain developer marketing firms headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Smartchain, headquartered in Paris, tops this list with the largest team on record.

Which city has the most blockchain developer marketing firms?

Paris leads with 76 headquartered companies, followed by Lyon (6) and Montpellier (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 96 verified decision-maker contacts tracked across these 189 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 Smart Search, 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.