Anthemius: Efficient & Modular Block Assembly for Concurrent Execution
Ray Neiheiser, Eleftherios Kokoris-Kogias, "Anthemius: Efficient & Modular Block Assembly for Concurrent Execution." arXiv preprint arXiv:2502.10074, 2025.
CV
Work experience
- Postdoctoral Researcher
- Institute for Science and Technology (ISTA), Austria
- Advisory: Krzysztof Pietrzak
- Game Theoretic Consensus
- Cryptography & Tree Communication
- Postdoctoral Researcher
- Institute for Science and Technology (ISTA), Austria
- Advisory: Lefteris Kokoris-Kogias
- Parallel Execution Engines for Smart Contracts
- Game Theoretic Consensus
Education
- Ph.D. in Automation Engineering and Systems, 2022
- University of Santa Catarina, Florianópolis, Brazil
- Advisory: Joni Fraga, Carlos Montez, Luciana Rech
- Kauri: Scaling Byzantine Fault Tolerant Consensus
- Completed with Distinction
- Ph.D. in Information Systems and Computer Engineering, 2022
- University of Lisbon, Lisbon, Portugal
- Advisory: Luis Rodrigues, Miguel Matos
- Kauri: Scaling Byzantine Fault Tolerant Consensus
- Completed with Distinction
- Master in Computer Science, 2017
- University of Santa Catarina, Florianópolis, Brazil
- Advisory: Lau Cheuk Lung, Luciana Rech
- Byzantine Fault Tolerant Architecture for Geo-Distributed Graph Databases
- Bachelor in Computer Science and Media, 2015
- Hochschule der Medien, Stuttgart, Germany
- Advisory: Roland Schmitz, Lau Cheuk Lung
- Fault-Tolerant Deferred Update Replication in Distributed Graph Databases
Publications
- Chiron: Accelerating node synchronization without security trade-offs in distributed ledgers
Ray Neiheiser, Arman Babaei, Giannis Alexopoulos, Marios Kogias, Eleftherios Kogias, "Chiron: Accelerating node synchronization without security trade-offs in distributed ledgers." arXiv preprint arXiv:2401.14278, 2024.
- Practical limitations of ethereum’s layer-2
Ray Neiheiser, Gustavo Inacia, Luciana Rech, Carlos Montez, Miguel Matos, Luis Rodrigues, "Practical limitations of ethereum’s layer-2." IEEE Access, 2023.
- The quest for scaling BFT Consensus through Tree-Based Vote Aggregation
Ray Neiheiser, Miguel Matos, Luis Rodrigues, "The quest for scaling BFT Consensus through Tree-Based Vote Aggregation." arXiv preprint arXiv:2103.12112, 2021.
- Kauri: Scalable bft consensus with pipelined tree-based dissemination and aggregation
Ray Neiheiser, Miguel Matos, Luis Rodrigues, "Kauri: Scalable bft consensus with pipelined tree-based dissemination and aggregation." In the proceedings of Proceedings of the ACM SIGOPS 28th Symposium on Operating Systems Principles, 2021.
- Dagora: Um Mercado Virtual Baseado em Side-Chains
Gustavo Inacia, Luciana Rech, Ray Neiheiser, Joni Fraga, "Dagora: Um Mercado Virtual Baseado em Side-Chains." In the proceedings of Simp'osio Brasileiro de Redes de Computadores e Sistemas Distribu'idos (SBRC), 2021.
- HRM smart contracts on the blockchain: emulated vs native
Ray Neiheiser, Gustavo Inacia, Luciana Rech, Joni Fraga, "HRM smart contracts on the blockchain: emulated vs native." Cluster Computing, 2020.
- Fireplug: Efficient and robust geo-replication of graph databases
Ray Neiheiser, Luciana Rech, Manuel Bravo, Luis Rodrigues, Miguel Correia, "Fireplug: Efficient and robust geo-replication of graph databases." IEEE Transactions on Parallel and Distributed Systems, 2020.
- HRM smart contracts on the blockchain
Ray Neiheiser, Gustavo Inacia, Luciana Rech, Joni Fraga, "HRM smart contracts on the blockchain." In the proceedings of 2019 IEEE Symposium on Computers and Communications (ISCC), 2019.
- Efficient Fault-Tolerant Transactions for Distributed Graph Database
Ray Neiheiser, Roland Schmitz, Luciana Rech, Manfredo Manfredini, "Efficient Fault-Tolerant Transactions for Distributed Graph Database." Singular. Engenharia, Tecnologia e Gest~ao, 2019.
- Constantino: Uma Arquitetura BFT Escal'avel e Eficiente para Blockchains
Ray Neiheiser, Joni Fraga, Luciana Rech, "Constantino: Uma Arquitetura BFT Escal'avel e Eficiente para Blockchains." In the proceedings of Simp'osio Brasileiro de Redes de Computadores e Sistemas Distribu'idos (SBRC), 2019.
- Policy-based adaptation of a byzantine fault tolerant distributed graph database
Manuel Bravo, Luis Rodrigues, Ray Neiheiser, Luciana Rech, "Policy-based adaptation of a byzantine fault tolerant distributed graph database." In the proceedings of 2018 IEEE 37th Symposium on Reliable Distributed Systems (SRDS), 2018.
- Fireplug: Flexible and robust n-version geo-replication of graph databases
Ray Neiheiser, Daniel Presser, Luciana Rech, Manuel Bravo, Luis Rodrigues, Miguel Correia, "Fireplug: Flexible and robust n-version geo-replication of graph databases." In the proceedings of 2018 International Conference on Information Networking (ICOIN), 2018.
- Replicaccao Tolerante a Faltas Eficiente em Bancos de Dados Orientados a Grafos
Ray Neiheiser, Lau Lung, Aldelir Luiz, Hylson Netto, "Replicaccao Tolerante a Faltas Eficiente em Bancos de Dados Orientados a Grafos." Anais do XXXVI Simp'osio Brasileiro de Redes de Computadores e Sistemas Distribuidos, 2016.
Talks
- Pythia: Supercharging Parallel Smart Contract Execution to Guide Stragglers and Full Nodes to Safety
Talk at Workshop on Scalability & Interoperability of Blockchains (SIB), Vienna
- Rump Session: Penetration Testing Byzantine Fault Tolerant Consensus
Talk at AFT 2024, Vienna
- Anthemius: Efficient & Modular Block Assembly for Concurrent Execution
Talk at SPyCoDe 2024, Vienna
- Pythia: Supercharging Parallel Smart Contract Execution
Talk at SPyCoDe 2023, Vienna
- Kauri: Scalable BFT Consensus with Pipelined Tree-Based Dissemination and Aggregation
Talk at SOSP 2021, Online
- Dagora: Um Mercado Virtual Baseado em Side-Chains
Talk at SBRC 2021, Online
- HRM Smart Contracts on the Blockchain
Talk at ISCC 2019, Barcelona
- Constantino: Uma Arquitetura BFT Escalável e Eficiente para Blockchains
Talk at SBRC 2019, Gramado
- Policy-Based Adaptation of a Byzantine Fault Tolerant Distributed Graph Database
Talk at SRDS 2018, Salvador
- Replicação Tolerante a Faltas Eficiente em Bancos de Dados Orientados a Grafos
Talk at SRDS 2016, Salvador
Teaching
- 2024 Teaching Assistant - Cryptocurrencies
- 2019 Teaching Internship - Programming I
- 2018 Teaching Internship - Programming I
- 2017 Teaching Internship - Programming I
Skills
- Languages
- German (Native)
- English (Fluent)
- Portuguese (Fluent)
- Programming Languages
- Java
- Rust
- C++
- Javascript
- Python
- Bash
- Tools and Frameworks
- Docker
- Linux
- Git
- Github
- Core Competencies
- Public Speaking and Presentation
- Scientific & Grant Writing
- Soft Skills
- Mentorship
- Project Management
- Leadership
- Community Management
Service and Leadership
- Worked 9 Months at the Red Cross with children with disabilities
- Part of the ISTA Food Parliament
- Arctic Code Vault Contributor
- Free Martial Arts Classes for University Community
- Open Source Maintainer