Pierre-Louis Roman

Postdoctoral researcher

Università della Svizzera italiana

I am a postdoctoral researcher in the Computer Systems Institute of USI Lugano, working with Patrick Eugster since 2019-08. I work on distributed systems with a focus on large-scale decentralized systems and distributed ledgers (e.g., blockchains).

I received a BSc in 2011 and an MSc in 2013 both from Sorbonne Université, and a PhD in 2018 for my work on decentralized systems performed under the supervision of François Taïani and Davide Frey in the WIDE group of Université de Rennes. I also spent the summer of 2016 at the Vrije Universiteit Amsterdam working with Spyros Voulgaris on Bitcoin.


  • Decentralized systems
  • Distributed algorithms
  • Distributed ledgers
  • Privacy-enhancing systems


  • PhD in Decentralized systems, 2018

    Université de Rennes (FR)

  • MSc in Distributed systems, 2013

    Sorbonne Université (Paris, FR)

  • Bsc in Computer science, 2011

    Sorbonne Université (Paris, FR)


Dietcoin: Hardening Bitcoin Transaction Verification Process For Mobile Devices
Exploring heterogeneity in loosely consistent decentralized data replication
Dietcoin: shortcutting the Bitcoin verification process for your smartphone
Bringing secure Bitcoin transactions to your smartphone
Speed for the elite, consistency for the masses: differentiating eventual consistency in large-scale distributed systems
Similitude: Decentralised Adaptation in Large-Scale P2P Recommenders
Towards a Geocentric Mobile Syndication System

Invited talks

Dietcoin: Shortcutting the Bitcoin verification process for your smartphone
Secured light Bitcoin client with Dietcoin and differentiated consistency with GPS
Bringing secure Bitcoin transactions to your smartphone


[FR] Un peu de blockchain, beaucoup de registres répartis
[FR] Blockchains, registres répartis, et leur utilité pour le notariat
[FR] Démystifier la blockchain et son utilité pour le notariat