Journal article / 2027
A Survey Charting Trust Models and Systems in Self-Sovereign Identity
Computer Science Review, volume 63 · Publisher-compliant accepted manuscript.
Pisa · IT
PhD researcher · University of Pisa
Calogero Turco
I study how people and systems establish trust in decentralized digital identity—turning complex security models into practical, verifiable infrastructure.
Highlights
Recent research, ready to read.
Open access / CC BY 4.0
From Solo Issuing to an Orchestra: Design and Seamless Augmentation of Self-Sovereign Identity for Multi-Signature Verifiable Credentials
ACM SAC 2026 · Published version available under a Creative Commons licence.
01 / About
Researching trust at the boundary of identity and infrastructure.
Calogero Turco is a PhD Student in Computer Science at the University of Pisa. His research interests are identity management and trust supported by Distributed Ledger Technologies (DLT). He currently works with Self-Sovereign Identity (SSI), a novel identity paradigm promising to give people control over their data.
In particular, he is exploring ways to use verifiable credentials on online social networks. Furthermore, he is exploring SSI as a way to give an identity to non-human entities such as online services and Internet of Things devices.
Calogero works with the Pisa DLT Laboratory. He collaborated with the group before his PhD as they worked together on SSI both for his Master’s Degree in Computer Science thesis and Bachelor’s Degree thesis.
02 / Affiliations
A
University of Pisa
Department of Computer Science · PhD programme, 2024–2027
Department website (opens in a new tab)B
Pisa DLT Laboratory
Distributed ledgers, peer-to-peer systems, and decentralized identity research.
Laboratory website (opens in a new tab)03 / Publications
Selected research
Search by title, venue, author, or topic. Publication files are linked only where a verified sharing route is available.
7 publications
A Survey Charting Trust Models and Systems in Self-Sovereign Identity
Computer Science Review, volume 63, article 101048
A systematic map of how trust is defined, established, and evaluated across self-sovereign identity systems.
- Trust models
- Self-sovereign identity
- Systematic review
BibTeX
@article{turco2026trust,
title = {A Survey Charting Trust Models and Systems in Self-Sovereign Identity},
author = {Turco, Calogero and De Salve, Andrea and Di Francesco Maesa, Damiano and Mori, Paolo and Ricci, Laura},
journal = {Computer Science Review},
volume = {63},
year = {2027},
doi = {10.1016/j.cosrev.2026.101048}
}Orchestrating Multi-Issuer Credentials in Self-Sovereign Identity: An Implementation with Proof of Ownership
31st IEEE Symposium on Computers and Communications (ISCC 2026)
An implementation and evaluation of coordinated multi-issuer credentials with cryptographic proof that each issuer controls its signing key.
- Verifiable credentials
- Multi-issuer
- Proof of ownership
BibTeX
@inproceedings{turco2026orchestrating,
title = {Orchestrating Multi-Issuer Credentials in Self-Sovereign Identity: An Implementation with Proof of Ownership},
author = {Turco, Calogero and De Salve, Andrea and Mori, Paolo and Ricci, Laura},
booktitle = {2026 IEEE Symposium on Computers and Communications (ISCC)},
year = {2026}
}CERBERUS: A Self-Sovereign Identity-Based Authorization Framework for Autonomous Vehicles
IEEE 103rd Vehicular Technology Conference (VTC2026-Spring)
An identity-based authorization architecture for autonomous-vehicle interactions using verifiable presentations and decentralized identifiers.
- Autonomous vehicles
- Authorization
- Self-sovereign identity
BibTeX
@inproceedings{turco2026cerberus,
title = {{CERBERUS}: A Self-Sovereign Identity-Based Authorization Framework for Autonomous Vehicles},
author = {Turco, Calogero and De Vincenzi, Marco and De Salve, Andrea and Matteucci, Ilaria and Mori, Paolo and Ricci, Laura},
booktitle = {2026 IEEE 103rd Vehicular Technology Conference (VTC2026-Spring)},
year = {2026}
}From Solo Issuing to an Orchestra: Design and Seamless Augmentation of Self-Sovereign Identity for Multi-Signature Verifiable Credentials
41st ACM/SIGAPP Symposium on Applied Computing (SAC 2026), pp. 503–505
OrchestraBLS extends self-sovereign identity with a coordinated workflow for issuing one credential endorsed by multiple organizations.
- BLS signatures
- Verifiable credentials
- Multi-signature
BibTeX
@inproceedings{turco2026orchestra,
title = {From Solo Issuing to an Orchestra: Design and Seamless Augmentation of Self-Sovereign Identity for Multi-Signature Verifiable Credentials},
author = {Turco, Calogero and De Salve, Andrea and Mori, Paolo and Ricci, Laura},
booktitle = {Proceedings of the 41st ACM/SIGAPP Symposium on Applied Computing},
pages = {503--505},
year = {2026},
doi = {10.1145/3748522.3779844}
}When Bitcoin Rolls the Dice: An Analysis of Gambling Patterns in SatoshiDice
8th Distributed Ledger Technology Workshop (DLT 2026)
A data-driven analysis of gambling behavior and transaction patterns in one of Bitcoin’s earliest high-volume applications.
- Bitcoin
- Network analysis
- Gambling patterns
BibTeX
@inproceedings{turco2026satoshidice,
title = {When Bitcoin Rolls the Dice: An Analysis of Gambling Patterns in SatoshiDice},
author = {Turco, Calogero and Trudu, Gabriele and Di Francesco Maesa, Damiano and Ricci, Laura},
booktitle = {8th Distributed Ledger Technology Workshop},
year = {2026}
}An Aid to Mitigate Online Misinformation with Self-Sovereign Identity and Artificial Intelligence
7th IEEE Conference on Blockchain Computing and Applications (BCCA 2025), pp. 169–177
A framework combining verifiable identity claims and artificial intelligence to support credibility assessment in online social networks.
- Misinformation
- Artificial intelligence
- Digital identity
BibTeX
@inproceedings{turco2025misinformation,
title = {An Aid to Mitigate Online Misinformation with Self-Sovereign Identity and Artificial Intelligence},
author = {Turco, Calogero and De Salve, Andrea and Di Francesco Maesa, Damiano and Mori, Paolo and Ricci, Laura},
booktitle = {2025 7th Conference on Blockchain Computing and Applications (BCCA)},
pages = {169--177},
year = {2025},
doi = {10.1109/BCCA66705.2025.11229690}
}Self-Sovereign Identity for Privacy-Preserving Shipping Verification System
5th International Conference on Blockchain Technology and Applications (ICBTA 2022), pp. 147–157
A blockchain-backed shipping workflow that gives customers privacy-preserving control over identity credentials and shipment verification.
- Supply chain
- Privacy
- Blockchain
BibTeX
@inproceedings{desalve2022shipping,
title = {Self-Sovereign Identity for Privacy-Preserving Shipping Verification System},
author = {De Salve, Andrea and Lisi, Andrea and Mori, Paolo and Ricci, Laura and Turco, Calogero},
booktitle = {Proceedings of the 2022 5th International Conference on Blockchain Technology and Applications},
pages = {147--157},
year = {2022},
doi = {10.1145/3581971.3581992}
}04 / Curriculum
Updated
Education and research
PhD in Computer Science
University of Pisa · Research on self-sovereign identity, trust, blockchain, Internet of Things, and online social networks.
MSc in Computer Science — ICT Solutions Architect
University of Pisa · 110/110 cum laude. Thesis on assessing the trustworthiness of social content through SSI.
BSc in Computer Science
University of Pisa · Thesis on privacy-preserving delivery with SSI and Hyperledger Indy.
05 / Contact
Ideas grow through good conversations.
For research collaborations, talks, or questions about identity and trust systems, email me at:
[email protected]