Champion
Bellaj badr
Mchain
Badr is CTO at Mchain and has over 18 years of experience designing and building distributed systems. He holds a PhD in Distributed Systems Security from Institut Polytechnique de Paris and is the author of the book Blockchain by Example. His work focuses on blockchain, cybersecurity, digital trust, and emerging technologies, helping organizations design secure and scalable distributed platforms.
Badges 3
Talks 2
- Devoxx Morocco 2026
How We Failed Before We Succeeded in Building a High-Value Payment System
- Devoxx Morocco 2024
Lessons learned from building/deploying a large-scale payment system


