Web3-based role and token data access

the case of building material passports

Conference paper (2023)

Authors

Jens Hunhevicz ETH Zürich, Swiss Federal Laboratories for Materials Science and Technology (Empa)
David F. Bucher ETH Zürich
R. K. Soman Integral Design & Management - CEG
Meliha Honic ETH Zürich
C.E.L. De Wolf ETH Zürich
Research Group
Integral Design & Management (CEG) (TU Delft)
Copyright: © 2023 Jens J. Hunhevicz, David F. Bucher, R. Kuttantharappel Soman, Meliha Honic, Daniel M. Hall, C.E.L. De Wolf
DOI: https://doi.org/10.35490/EC3.2023.217
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Published Date

2023

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Integral Design & Management

Abstract

Long-term access to lifecycle data is key to a successful transition towards a circular built environment. However, the underlying technology often remains centralized and risks becoming inaccessible over time. In this paper, we investigate whether decentralized access methods using Web3, i.e. blockchain and decentralized data storage protocols, can help to mitigate this limitation. We implement Web3 data access mechanisms for a material passport with both a role-based and a token-based smart contract. Initial results suggest that Web3 offers a promising approach to data access over the lifecycle of a built asset-but only with careful design choices.

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