# ClinConNet: Privacy preserving identity & consent management for clinical trials

Montassar Naghmouchi, Maryline Laurent

► To cite this version:

Montassar Naghmouchi, Maryline Laurent. ClinConNet: Privacy preserving identity & consent management for clinical trials. PEPR-SanteNum 2025 - Journées Annuelles du PEPR Santé Numérique, Oct 2025, Lille, France, Oct 2025, Lille, France. 2025. [hal-05353590](https://hal.science/hal-05353590v1)

HAL Id: hal-05353590

https://hal.science/hal-05353590v1

Submitted on 7 Nov 2025

HAL is a multi-disciplinary open access
archive for the deposit and dissemination of sci-
entific research documents, whether they are pub-
lished or not. The documents may come from
teaching and research institutions in France or
abroad, or from public or private research centers.

L'archive ouverte pluridisciplinaire HAL, est
destinée au dépôt et à la diffusion de documents
scientifiques de niveau recherche, publiés ou non,
émanant des établissements d'enseignement et de
recherche français ou étrangers, des laboratoires
publics ou privés.

<figure><img src="image_1.png" /></figure>

Distributed under a Creative Commons Attribution 4.0 International License
## Authors

Montassar Naghmouchi
Maryline Laurent

s@movar

## Partners

<figure><img src="image_2.png" /></figure>

<figure><img src="image_3.png" /></figure>

<figure><img src="image_4.png" /></figure>

<figure><img src="image_5.png" /></figure>

<figure><img src="image_6.png" /></figure>

<figure><img src="image_7.png" /></figure>

<figure><img src="image_8.png" /></figure>

## 1. THE CHALLENGE

Complex and outdated consent management.
→ Paper-based, slow and inefficient.
→ Patient data locked in siloed systems.
→ Limited patient control and involvement.

## 2. THE SOLUTION

A modern patient-centric approach combining Blockchain, SSI and Dynamic consent.

**Web-Portal:** Easy-to-use for project discovery and consent management.

**SSI wallet:** Patient-centric identity and consent management.

**Blockchain:** Secure, immutable record of consent.

## 3. HOW IT WORKS

1. SSI wallets to manage identity across multiple projects.

2. Consent forms exchanged as wallet-to-wallet messages.

3. Consent forms encoded as HTML, signed by participants and research organizations.

4. Consent proofs generated from consent forms.

5. Public consent proofs available on the immutable blockchain.

6. Smart contracts to manage the consent state.

<figure><img src="image_9.png" /><figcaption>Figure 2: relationships between actors and consent data</figcaption></figure>

<caption>Figure 1: ClinConNet Overview</caption>