LATEST RESEARCH
2023 · FINANCE RESEARCH LETTERS · VOLUME 58
A blockchain-based framework for effective monitoring of EU Green Bonds.
EUGBS-Chain: transparency and accountability against greenwashing.
ARTICLE 104397
Green bonds are intended to finance environmental and climate-related projects, but their credibility depends on demonstrating that capital is used for genuine green growth. This work introduces EUGBS-Chain, a blockchain-based framework designed to reduce the risk of greenwashing by recording relevant transactions in a tamper-resistant, decentralised ledger that can be accessed and verified by stakeholders.
The contribution connects blockchain design with a concrete policy and market problem. Rather than treating transparency as a general promise, the framework turns it into a traceable monitoring process for the European Green Bond market.
GREENWASHING
TRANSPARENCY
EUGBS-CHAIN
P. Christodoulou, M. Psillaki, G. Sklias and S. A. Chatzichristofis, Finance Research Letters, 58, 104397, 2023. DOI: 10.1016/j.frl.2023.104397.
EARLIER RESEARCH
Applied blockchain across health, trust and IoT.
The earlier work explores a common question across three different settings: how can a decentralised system make a critical event, exchange or outcome independently verifiable?
2020 · IEEE DCOSS
Health Information Exchange with Blockchain amid COVID-19-like Pandemics.
A secure, user-centred framework for exchanging sensitive medical information beyond isolated local repositories. It combines the InterPlanetary File System, on-chain tagging, cryptographic access mechanisms and a smart contract to support traceability, integrity and controlled access.
K. Christodoulou, P. Christodoulou, Z. Zinonos, E. G. Carayannis and S. A. Chatzichristofis, 16th IEEE DCOSS, 2020. DOI: 10.1109/DCOSS49796.2020.00071.
2019 · JOURNAL OF CELLULAR AUTOMATA
RandomBlocks: A Transparent, Verifiable Blockchain-based System for Random Numbers.
A pseudo-random generation process in which the evolution of a one-dimensional cellular automaton follows the evolution of a blockchain. Given the seed, transition rules and number of steps, an external party can verify and backtrack the result without being able to predict it in advance.
K. Christodoulou, S. A. Chatzichristofis, G. Ch. Sirakoulis and P. Christodoulou, Journal of Cellular Automata, 14(5-6), pp. 335-349, 2019.
2019 · IEEE DCOSS
ParkChain: An IoT Parking Service Based on Blockchain.
A decentralised parking application that combines an Ethereum smart contract, licence-plate recognition and Raspberry Pi access control. The system creates a verifiable record of when a registered vehicle enters a parking area and evaluates the practical performance of the complete implementation.
Z. Zinonos, P. Christodoulou, A. Andreou and S. A. Chatzichristofis, 15th IEEE DCOSS, pp. 687-693, 2019. DOI: 10.1109/DCOSS.2019.00123.
ONE RESEARCH THREAD
Across these studies, blockchain is treated as infrastructure for accountability rather than as an end in itself. The central concern is whether a system can make consequential actions traceable, independently verifiable and resistant to retrospective alteration.