Adsn Group

What Adsn Group does

Groupe ADSN (L'ASSOCIATION POUR LE DEVELOPPEMENT DU SERVICE NOTARIAL) is a French non-profit association founded in 1983 that operates the digital infrastructure backbone of the French notarial profession under a convention with the Conseil Supérieur du Notariat (CSN). The Group runs three wholly-owned entities: ADSN delivers notary-specific digital services including the Clé Real qualified electronic signature (76,000 keys in circulation), the MICEN centralized electronic archive (40 million acts, 35 million of which are electronic authentic acts), the Planète secure exchange platform (225,000 daily flows), and centralized registries FCDDV and PACSen; ADNOV extends these capabilities into 6,500 clients across other regulated professions and local authorities, offering secure networks, Cyber 360 cybersecurity (15,000+ workstations), Visio video conferencing (6,000+ subscribers), and DPO services (5,300+ offices); and ADNEXUS, a venture capital fund created in 2021, invests in early-stage startups in digital trust and sovereign data management, with portfolio companies including Legapass, Dastra, and Biomemory.

Revenue mechanics are primarily subscription-based: ADSN earns recurring fees from all French notary offices for digital infrastructure services, while ADNOV generates recurring revenue from regulated-profession and local-authority clients through direct enterprise sales supported by 200 France-based experts. ADNEXUS operates as a strategic investment vehicle rather than a top-line contributor. The Group employs 536 collaborators as of January 2026, with a stated target of 60 annual recruitments, and maintains offices in Venelles (headquarters near Aix-en-Provence) and Paris.

The Group's competitive position is anchored in 42 years of regulatory trust under eIDAS, the captive CSN convention covering all French notaries, and accumulated proprietary data assets (22.7 million testamentary dispositions, 23.3 million real estate records, 40 million archived acts). Customer-reported satisfaction is 93% among notaries and 90% among ADNOV clients. Pricing is quote-based under long-term service agreements and not publicly disclosed. The Group's strategic posture combines defensive consolidation of its notarial monopoly with offensive expansion into adjacent regulated-profession verticals and a venture-backed ecosystem bet on sovereign digital trust technologies.

Name

Adsn Group

Legal name

L'ASSOCIATION POUR LE DEVELOPPEMENT DU SERVICE NOTARIAL

Website

https://groupeadsn.fr

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

251–500 employees

Short description

Groupe ADSN is the digital infrastructure operator for all French notaries, delivering qualified e-signature, centralized electronic archiving, secure government exchanges, and adjacent cybersecurity and DPO services to 6,500 regulated-profession clients in France.

Ownership category

akta.pro rank

Headquarters

HQ city

Venelles

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales, Others

Revenue model

1. Services numériques pour les notaires (ADSN): ADSN provides digital infrastructure and services to all French notaries, including electronic signature (clé Real), act archiving (MICEN), secure exchange platform (Planète), centralized files (FCDDV, PACSen), and real estate reference database. The Group's 40-year history with the notary profession creates recurring service relationships with all notary offices in France.
2. Solutions numériques pour professions réglementées et collectivités (ADNOV): ADNOV provides comprehensive digital solutions including secure network, data protection, cybersecurity, video conferencing, real estate, telephony, communication, and training services to 6,500 clients including regulated professions and local authorities. Services are delivered by 200 France-based experts through personalized accompaniment from solution selection to maintenance.
3. Capital-risque et investissement (ADNEXUS): ADNEXUS operates as a venture capital fund investing in early-stage (pre-seed and seed) startups in digital trust and sovereign data management. ADNEXUS provides financial investment and strategic partnership to startups including Legapass, Dastra, and Biomemory. Created in 2022, the fund has invested in 6 startups and 1 fund-of-funds participation out of 236 startups studied.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels9 records

Core offering

Adsn Group provides the proprietary digital infrastructure that operationalizes the French notary profession and is being extended to other regulated professions and local authorities. Its core deliverables are subscription-based digital platforms — including the MICEN electronic archive, Clé Real qualified electronic signature keys, Planète secure exchanges, and centralized national registries (FCDDV, PACSen, Base de Références Immobilières) — bundled with cybersecurity, video conferencing, and a digital trust venture fund (ADNEXUS). The offering is anchored in eIDAS qualified trust services and exclusive regulatory mandate covering all French notary offices.

Differentiator

Problem solved

Functional benefit

Brands

• ADSN: Core entity providing digital services for notaries including electronic signature (clé Real), MICEN archive, and exchange platform (Planète)
• ADNEXUS
• ADNOV

Products and services

• ADSN - Core Notary Digital Services Subscription-based core digital infrastructure for French notaries, bundling qualified electronic signature (Clé Real), centralized electronic archiving (MICEN), secure exchanges (Planète), and access to centralized national registries (FCDDV, PACSen, Base de Références Immobilières). Sold as the standard digital service pack for all 16,200+ French notary offices.
• ADNOV - Digital Services for Regulated Professions and Local Authorities Extension of ADSN's digital infrastructure (qualified electronic signature, secure exchange, secure dematerialization) to other regulated professions such as lawyers, bailiffs, court clerks, and to French local public authorities.
• ADNEXUS - Venture Capital Fund for Digital Trust Venture capital investment fund (formerly CERTINERGY, then DNA) operated by Adsn Group to take minority equity stakes in early-stage digital trust startups, providing strategic partnership and access to the Adsn ecosystem.
• MICEN - Centralized Electronic Archive Centralized electronic archive for French notaries holding more than 40 million notarial acts (Actes Authentiques Informatisés) with legally compliant long-term retention. Operated as ADSN's flagship archiving platform.
• Clé Real - Qualified Electronic Signature Key Qualified electronic signature key issued by ADSN (as PSCO) under the eIDAS regulation, with 76,000 keys in circulation among French notary offices. Each Clé Real is a hardware token issued to a practicing notary for signing notarial acts.
• Planète - Secure Dematerialized Exchange Platform Secure dematerialized exchange platform enabling French notaries to exchange documents digitally with counterparties (notaries, banks, administrations) on ADSN's secure Real network.
• FCDDV - Centralized Testamentary Dispositions File Centralized national registry of testamentary dispositions (Fichier Central des Dispositions de Dernières Volontés) containing more than 22.7 million entries, used by notaries to search for last wills and dispositions after death.
• PACSen - Electronic PACS Registry Electronic registry of Civil Solidarity Pacts (Pactes Civils de Solidarité) records for French notaries.
• Base de Références Immobilières Real estate references database holding 23.3 million real estate records, supporting notaries in property transactions and providing national consistency on real estate data.
• Cyber 360 - Cybersecurity Solution Cybersecurity offering for French notaries and ADNOV clients, covering threat detection, secure infrastructure, and cyber hygiene aligned with ADSN's regulated trust services environment.
• Visio - Video Conferencing Secure video conferencing solution designed for notarial remote acts and ADNOV clients, supporting qualified electronic signature workflows with remote identification and authentication.

Quantifiable outcome

• 93% of notaries satisfied with ADSN services
• +9 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

Three partnerships are on record, tiered minor and core.

• Festival d'Aix-en-ProvenceminorGTM or Marketing Partner · 23 March 2025The Group renewed its cultural sponsorship/mécénat with the Festival d'Aix-en-Provence for the second consecutive year. The festival's sets and scenery are created near the Group's headquarters. This partnership reflects the Group's commitment to supporting the cultural life of the Aix-en-Provence territory and strengthening its local roots. Festival décor was borrowed for the Group's Christmas event.
• CSN (Conseil Supérieur du Notariat)coreStrategic or Co-development PartnerADSN operates under a convention with the CSN (Superior Council of Notaries) to provide digital infrastructure for the French notary profession. This long-standing relationship, initiated in 1981 with the creation of FCDDV, is the foundation of ADSN's activities. Real-time supervision of notarial regulatory activity ensures service continuity per the CSN convention.
• AdverisminorImplementation/ SI/ Consulting PartnerAdveris is the web agency (webmaster) responsible for the design and development of the Groupe ADSN website, as stated in the legal credits.

Scale indicators22 records

Recent moves14 records

Expansion highlights6 records

Market position

Competitive moat6 records

Customer concentration

• LinkedInfr.linkedin.com/company/groupeadsn
• Xx.com/groupeadsn

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Adsn Group