Summary:
- Professor Aggelos Kiayias, chief scientist at Input Output, has been named a 2026 IACR Fellow
- This 2026 honor follows Professor Kiayias’s induction as a 2025 ACM Fellow, placing him in an elite group of scientists recognized at the highest level across both broad computer science and specialized cryptography
- This prestigious honor celebrates a career dedicated to the mathematical foundations of blockchain and digital trust
Following a recent induction as a 2025 ACM Fellow, it has been announced that Professor Aggelos Kiayias, chief scientist at Input Output (IO) and director of the Blockchain Technology Laboratory at the University of Edinburgh, has been named a 2026 Fellow of the International Association for Cryptologic Research (IACR). He is being awarded ‘for outstanding contributions to cryptographic designs, including the science and implementations of blockchains, for educational leadership, and for service to the IACR’.
The IACR Fellowship serves as the ‘Hall of Fame’ specifically for the cryptographic community – a distinction reserved for the few whose work has fundamentally shifted the global understanding of how information is protected and secured in a digital age.
In the rigorous world of cryptology, there is no higher validation than the respect of one’s peers. It is the ultimate benchmark of a career dedicated to the mathematical foundations of security and the pursuit of verifiable truth.
A career defined by mathematical rigor
The IACR is the global authority on the science of cryptology. To be named a Fellow is to join the ranks of the visionaries who built the protocols securing the modern internet. For Professor Kiayias, this recognition is a testament to a lifelong commitment to provable security.
In an industry often driven by rapid iteration and ‘good enough’ solutions, Kiayias has consistently championed a different path: one where security is a mathematical certainty and not just an experimental feature. From early work on traitor tracing and anonymous identification to more recent breakthroughs in decentralized systems, this research has provided the blueprints for a more secure and sovereign digital world.
Redefining the foundations of blockchain
The IACR Fellowship recognizes the profound impact Professor Kiayias has had across the cryptographic landscape, most notably in the evolution of decentralized networks:
- Formalizing consensus: with the Bitcoin Backbone Protocol, Kiayias and his collaborators provided the first formal proof of the security properties of Nakamoto consensus, bringing scientific legitimacy to the blockchain revolution.
- The Ouroboros legacy: as the lead architect of the Ouroboros family of protocols, he demonstrated that proof-of-stake systems could achieve the same rigorous security guarantees as proof-of-work, while operating at a fraction of the environmental cost.
- Empowering the individual: beyond consensus, his contributions to electronic voting and zero-knowledge proofs have focused on a singular goal: creating systems that protect individual privacy and democratic integrity without sacrificing transparency.
Bridging theory and global infrastructure
What distinguishes the career of Professor Kiayias – and what this Fellowship honors – is the unique ability to translate high-level academic theory into global infrastructure. Through leadership at the University of Edinburgh and IO, he has ensured that world-class research is not confined to journals, but is instead the living code powering ecosystems used by millions of people, driving growth and innovation.
Furthermore, he has mentored a new generation of scientists, instilling a culture of excellence and a ‘research-based’ approach that continues to push the boundaries of what is possible in distributed ledger technology.
A milestone for the scientific community
This announcement marks a significant moment of recognition for the wider blockchain research ecosystem. It confirms that the foundations being built today are recognized as world-leading by the most demanding scientific body in the field.
As Professor Kiayias enters the ranks of the IACR Fellows, the community celebrates a career built on the pursuit of truth through mathematics. This work hasn't just secured data; it has helped secure the digital future.
