Technology Stack

Our Technology

Discover the cutting-edge technologies powering the Datalium platform.

Fabric

At the heart of Datalium lies Hyperledger Fabric, an enterprise blockchain developed by the Linux Foundation. Unlike public blockchains like Bitcoin or Ethereum, Hyperledger Fabric is designed for enterprise applications.

High Performance

Over 7,000 transactions per minute

Confidentiality

Private channels for sensitive data

Modularity

Flexible plug-and-play architecture

Hyperledger Fabric

Enterprise Blockchain

  • Open Source (Linux Foundation)
  • Used by IBM, Oracle, SAP
  • Byzantine fault-tolerant consensus

Full Stack

A modern architecture designed for performance, security and scalability.

Rust

Our backend is built in Rust, a modern systems language that guarantees memory safety without sacrificing performance. With Rust, we achieve millisecond-level response times.

PostgreSQL

Open source relational database recognized for its reliability and performance. PostgreSQL stores user metadata and certification history.

Ubuntu Server

Infrastructure hosted on Ubuntu Server LTS for maximum stability, regular security updates and optimal Docker compatibility.

Docker

Containerization with Docker for reproducible deployment, service isolation and simplified horizontal scaling.

SSL/TLS

End-to-end encryption with SSL/TLS certificates. All communications are secured via HTTPS with automatic Let's Encrypt certificate renewal.

Modern Frontend

Responsive and intuitive user interface built with the latest web technologies. Compatible with all browsers and devices.

Zero-Knowledge

FOLD, our digital identity wallet powered by Datalium, is built on a Zero-Knowledge architecture. This means your data is validated without ever being revealed. Even Datalium cannot access your documents — it's technically impossible.

Zero-Knowledge Proof

Validation without revealing content

AES-256 + SHA-256

Military-grade encryption with TOTP keys

Triple Authentication

Password + FaceID + Recovery questions

RAM-only Middleware

Automatic purge, zero server persistence

Zero Data Exposure

No tracking, no logs, no resale

  • FaceID never stored — only used to derive the key
  • Documents never leave your device
  • End-to-end encryption at all times
  • GDPR, eIDAS 2.0, 152-FZ compliant

6 Attacks, 0 Breaches

We tested every attack scenario. Your identity remains protected in all cases.

Client DB Hacked

Exposed: encrypted emails only.
Passport: NOT accessible.

Blockchain Compromised

Exposed: encrypted blocks only.
Passport: NOT accessible.

Middleware Hacked

Exposed: nothing (RAM only).
Passport: NOT accessible.

Verification Server Hacked

Exposed: aggregated statistics only.
Passport: NOT accessible.

ALL Servers Compromised

All servers hacked simultaneously.
Passport: STILL NOT accessible.

Phone Stolen

Triple authentication required to access the app.
Passport: NOT accessible.

Multi-Layer

A defense-in-depth security approach to protect your data.

Authentication

JWT + Argon2 for ultra-secure passwords.

Encryption

AES-256 + TLS 1.3 for all communications.

Hashing

SHA-256 for data fingerprints and TOTP keys.

CKD V2 Blockchain

Distributed consensus for immutability on our proprietary chain.

Compliant

The European Union mandates digital identity for all citizens. The eIDAS 2.0 regulation, adopted in 2024, requires digital identity wallets to be available by 2026 and adopted by the private sector by 2027 — with 80% of citizens onboarded by 2030.

FOLD by Datalium is designed from the ground up to be fully compliant with eIDAS 2.0, GDPR and biometric privacy regulations. Our architecture ensures compliance is built into the technology, not bolted on afterward.

450M Citizens

27 EU Member States concerned

350+ Pilot Companies

Already testing digital identity wallets

Mandatory by 2026

Digital wallets required for all EU citizens

eIDAS 2.0 Timeline

  • Law adopted by European Parliament
  • Mandatory digital wallets
  • Private sector integration
  • 80% citizen adoption target

Blockchain

Private permissioned blockchain with 7 distributed EU nodes and capacity of 10M+ records per day.

Block Structure (~1.5 MB)

Each block contains: index, UTC timestamp, AES-256 encrypted payload, SHA-256 link to previous block, SHA-256 hash and Ed25519 node signature.

Leader-based Replication

7 nodes with master rotation every 5 minutes. Automatic failover on failure. Batch writes of 500 blocks with PostgreSQL + JSONB storage.

Gossip Protocol

P2P sync: fanout 8 peers/hop, TTL 4 hops (4,096 node reach), dedup cache 10,000 msgs/60s. Integrity checks every 30 seconds.

Performance

10M records/day. 115+ blocks/second. 5 TB daily storage capacity. 1.8 PB annual capacity. Health checks every 15 seconds.

Three Authentication

Multiple recovery methods ensure you never lose access to your identity.

A

Normal — With Phone

SHA-256(doc) + Phone TOTP. QR code scanned by verifier. For daily use, instant verification.

B

FaceID Recovery

SHA-256(FaceID) + Middleware TOTP. Face scan + email verification. When phone is lost.

C

Security Questions

SHA-256(personal info) + TOTP. Last resort when phone is lost and no FaceID.

Enterprise

Designed to meet the highest international security and privacy standards.

ISO 27001

Information Security Management. Systematic risk management framework. Target: Q2 2026.

SOC 2 Type II

Security, availability, processing integrity, confidentiality and privacy audit. Target: Q3 2026.

GDPR

EU data protection and privacy regulation. Right to erasure and portability. Compliant by design.

Swiss DPA

Federal data protection act with EU adequacy decision. Cross-border transfers enabled.

eIDAS 2.0

EU electronic identification and trust services framework. Ready for mandatory 2027 deadline.

ISO 27701

Privacy Information Management extension. Target: Q4 2026.

Your Privacy Deserves to Stay Private

Discover FOLD by Datalium — where security meets trust.

Discover FOLD About Datalium