The sovereign
health passport.
Not the portal they lend you.
Not the platform that owns you.
The record you own, cryptographically.
French digital health
has been failing
for 20 years.
independent physicians cut off for days by the WEDA cyberattack, November 2025. Patient records inaccessible, prescriptions frozen.
of French citizens actively use the DMP / Mon Espace Santé after 20 years and €600M of public investment.
annual deaths in the US attributable to interoperability failures between health systems (ONC 2024). Europe: figure unpublished.
European platforms where the patient cryptographically owns their data. Epic, Doctolib, WEDA — all portals managed by a third party.
"The problem isn't technical. It's about power."
5 deadlines.
18 months.
Legal framework and public opinion converge. Whoever ships now takes the European market.
23,000 independent physicians paralyzed for days. Health decision-makers are actively seeking a resilient-by-design alternative.
All health data hosting must be HDS v2-certified. Non-compliant US solutions (AWS/Azure without enclaves) exit the market.
Health AI classified as high-risk. Platforms without transparent AI governance (audit, traceability, opt-out) become undeployable.
Medical software must feed Mon Espace Santé by default. The market opens to a neutral orchestrator capable of aggregating all sources into a patient-centric passport.
The eIDAS 2 regulation mandates every EU member state to deploy a sovereign digital identity wallet. Being EUDI-compliant from day one = European regulatory moat. Non-compliant platforms are locked out of public-sector deployment and mandatory cross-border identity interop.
Between May 2026 and early 2027, the European digital health market redistributes itself. MDMC is positioned at the center.
A passport,
not a portal.
Epic, Doctolib, WEDA: portals where your record belongs to the provider. You access it because they lend it to you.
MDMC: a cryptographic passport you own. Even we cannot read your data.
Client-side E2EE
Your data is encrypted on your device with a key derived from your passphrase (Argon2id + AES-GCM). Our database only holds ciphertext. A breach ≠ a catastrophe.
eIDAS Ed25519 signature
Each prescription, each report is signed by the practitioner with their private key. Publicly verifiable via QR code, valid for 20 years, independent of MDMC.
Public blockchain anchoring
Weekly Merkle root published on Ethereum + Bitcoin. Altering a document = rewriting $1.5T of economic security. Impossible.
Every document is
sealed 4 times.
Total: €480/year. A proprietary blockchain would cost €500,000 to €1M/year for the same result.
An 18–24 month
technical moat.
| Epic MyChart | Doctolib | WEDA | Mon Espace Santé | MDMC | |
|---|---|---|---|---|---|
| Client-side E2EE | × | × | × | × | ✓ |
| Ed25519 signature + QR verify | × | × | × | × | ✓ |
| Public blockchain anchoring | × | × | × | × | ✓ |
| HDS v2 + Ségur V2 native | × | ~ | ✓ | ✓ | ✓ |
| Free for patients | × | ✓ | N/A | ✓ | ✓ |
| Multi-country eID + phone OTP + ID scan | × | × | × | FR only | ✓ |
| Patient owns their data | × | × | × | × | ✓ |
The WEDA case, November 2025
23,000 doctors cut off. Classic centralized SaaS model. A living case study of why MDMC is right.
Our signature differentiator
"WEDA = a doctor tool where the patient is an object. MDMC = a patient passport where the doctor is invited."
Europe first.
Mediterranean next.
What's already running.
ANS RPPS+ADELI registry imported and indexed (trigram search). Anti-fraud base + doctor profile enrichment fully operational.
National health facilities registry imported in full. Query by city, type, specialty, capacity.
Stack Next.js 16 + NestJS + Prisma + Postgres. HDS v2 ready. Client-side E2EE messaging operational (libsodium).
Functional parity with Mon Espace Santé achieved. Profile, family circle, care team, multi-profiles, PDF summary, emergency QR, calendar.
Ethical monetization
by design.
- — Unlimited E2EE passport
- — Messaging with their doctor
- — FHIR / GDPR art. 20 export
- — Full practice workspace
- — Ed25519 prescription signature
- — Calendar + teleconsult + reports
- — Opt-in patient alerts
- — White-label deployment
- — Hospital IT integration
- — Patient-opt-in research lake
We never sell patient data. Pathology donation is opt-in, revocable, pseudonymized — and compensated for the patient in a future community research fund.
A team
that ships.
Elias Tannous
Technical Account Manager Industry 4.0 — 10 years in critical industrial systems. Expert in sovereign health stack integration. Ships the product himself: 14 patient features, Ed25519 signature, ANS registry (1.87M professionals), production CI/CD.
3 key roles sought
-
01
Independent GP / physicianProduct design partner for the doctor app. Workflow validation, willingness-to-pay at €29/month. Equity 0.5–1%.
-
02
Ex-ANS / Ex-ANAP / Hospital CIOOpening doors to Ségur / MES interop / university hospital pilots. Equity 1–2%.
-
03
Health GDPR + eIDAS lawyerContinuous compliance audit, regulator response (CNIL, ANS, EDPS). Part-time or equity 0.5%.
Transparency on team is a proof point. We'd rather say "to be hired" than pad an org chart.
€1.2 M
seed.
For 18 months of runway to hit Series A milestones:
- — 30,000 active patients
- — 400 paying doctors · €140k ARR
- — 1 university hospital pilot signed
- — HDS v2 certification + ISO 27001 audit
Dilution target · 15–20%
3 engineers (full-stack + crypto + mobile), design, QA
HDS v2, ISO 27001, external DPO, sovereign OVH hosting, OVH KMS
GTM doctor (URPS, conferences, content), hospital partnerships
Legal, accounting, office, advisory board equity reserve
Shall we talk
over coffee?
The French digital health market is redistributing between May and October 2026. We're shipping. Others are pivoting. Let's choose together which side you're on.
- → Full dataroom on request (NDA)
- → Live FR demo: patient.diosal.com
- → Public bugs & fixes log: BUGS_AND_FIXES.md
- → Full PRD: docs/prd/
"The health passport you own, not the portal they lend you."
My Data My Care · 2026 · v1