Overview of Blockchain Oracle Research

Whereas the use of distributed ledger technologies has previously been limited to cryptocurrencies, other sectors—such as healthcare, supply chain, and finance—can now benefit from them because of bitcoin scripts and smart contracts. However, these applications rely on oracles to fetch data from the...

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Main Author: Giulio Caldarelli
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Future Internet
Subjects:
Online Access:https://www.mdpi.com/1999-5903/14/6/175
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author Giulio Caldarelli
author_facet Giulio Caldarelli
author_sort Giulio Caldarelli
collection DOAJ
description Whereas the use of distributed ledger technologies has previously been limited to cryptocurrencies, other sectors—such as healthcare, supply chain, and finance—can now benefit from them because of bitcoin scripts and smart contracts. However, these applications rely on oracles to fetch data from the real world, which cannot reproduce the trustless environment provided by blockchain networks. Despite their crucial role, academic research on blockchain oracles is still in its infancy, with few contributions and a heterogeneous approach. This study undertakes a bibliometric analysis by highlighting institutions and authors that are actively contributing to the oracle literature. Investigating blockchain oracle research state of the art, research themes, research directions, and converging studies will also be highlighted to discuss, on the one hand, current advancements in the field and, on the other hand, areas that require more investigation. The results also show that although worldwide collaboration is still lacking, various authors and institutions have been working in similar directions.
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spelling doaj.art-1fb20fe9011e4103a9fe48bf6d93841a2023-11-23T16:43:35ZengMDPI AGFuture Internet1999-59032022-06-0114617510.3390/fi14060175Overview of Blockchain Oracle ResearchGiulio Caldarelli0Department of Business Administration, University of Verona, 37129 Verona, ItalyWhereas the use of distributed ledger technologies has previously been limited to cryptocurrencies, other sectors—such as healthcare, supply chain, and finance—can now benefit from them because of bitcoin scripts and smart contracts. However, these applications rely on oracles to fetch data from the real world, which cannot reproduce the trustless environment provided by blockchain networks. Despite their crucial role, academic research on blockchain oracles is still in its infancy, with few contributions and a heterogeneous approach. This study undertakes a bibliometric analysis by highlighting institutions and authors that are actively contributing to the oracle literature. Investigating blockchain oracle research state of the art, research themes, research directions, and converging studies will also be highlighted to discuss, on the one hand, current advancements in the field and, on the other hand, areas that require more investigation. The results also show that although worldwide collaboration is still lacking, various authors and institutions have been working in similar directions.https://www.mdpi.com/1999-5903/14/6/175blockchainsmart contractsoraclesbibliometric analysis
spellingShingle Giulio Caldarelli
Overview of Blockchain Oracle Research
Future Internet
blockchain
smart contracts
oracles
bibliometric analysis
title Overview of Blockchain Oracle Research
title_full Overview of Blockchain Oracle Research
title_fullStr Overview of Blockchain Oracle Research
title_full_unstemmed Overview of Blockchain Oracle Research
title_short Overview of Blockchain Oracle Research
title_sort overview of blockchain oracle research
topic blockchain
smart contracts
oracles
bibliometric analysis
url https://www.mdpi.com/1999-5903/14/6/175
work_keys_str_mv AT giuliocaldarelli overviewofblockchainoracleresearch