%0 Conference Proceedings %T Validation and Verification of Data Marketplaces %+ The Bartlett [London] %A Serrano, Will %Z Part 18: Smart Blockchain Applications/Cybersecurity %< avec comité de lecture %( IFIP Advances in Information and Communication Technology %B 17th IFIP International Conference on Artificial Intelligence Applications and Innovations (AIAI) %C Hersonissos, Crete, Greece %Y Ilias Maglogiannis %Y John Macintyre %Y Lazaros Iliadis %I Springer International Publishing %3 Artificial Intelligence Applications and Innovations %V AICT-627 %P 780-792 %8 2021-06-25 %D 2021 %R 10.1007/978-3-030-79150-6_61 %K Data marketplace %K Smart cities %K Smart buildings %K Real estate %K Blockchain %K Smart contracts %K Artificial intelligence %Z Computer Science [cs]Conference papers %X This paper presents a Validation and Verification (V&V) model of Data Marketplaces. Data is extracted from the sensors embedded within the Smart city, infrastructure, or building via Application Programming Interfaces (APIs) and inserted into a Data Marketplace. The technology is based on smart contracts deployed on a private ethereum blockchain. Current issues with data in Smart cities, infrastructure, buildings, or any real estate, are the difficulty of its access and retrieval, therefore integration; its quality in terms of meaningful information; its large quantity with a reduced coverage in terms of systems and finally its authenticity, as data can be manipulated for economic advantage. In order to address these issues, this paper proposes a Data Marketplace model with a hierarchical process for data validation and verification where each stage adds a layer of data abstraction, value-added services and authenticity based on Artificial Intelligence. By using a blockchain, this presented approach is based on a decentralised method where each stakeholder stores the data. The proposed model is validated in a real application with live data: Newcastle urban observatory smart city project. %G English %Z TC 12 %Z WG 12.5 %2 https://inria.hal.science/hal-03287685/document %2 https://inria.hal.science/hal-03287685/file/509922_1_En_61_Chapter.pdf %L hal-03287685 %U https://inria.hal.science/hal-03287685 %~ IFIP %~ IFIP-AICT %~ IFIP-TC %~ IFIP-WG %~ IFIP-TC12 %~ IFIP-AIAI %~ IFIP-WG12-5 %~ IFIP-AICT-627