期刊
IEEE OPEN JOURNAL OF THE COMPUTER SOCIETY
卷 2, 期 -, 页码 164-178出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/OJCS.2021.3067450
关键词
Vaccines; Blockchain; COVID-19; Pandemics; Immune system; Smart contracts; Supply chains; Blockchain; COVID-19; immunization programs; data integrity and immutability; smart contracts; vaccine distribution; transparency and audit
In the context of the COVID-19 pandemic, this paper discusses how blockchain technology can improve various aspects of the vaccination scheme, including data integrity, monitoring vaccine distribution, and implementing a solution for reporting side effects. The proposed blockchain system shows promising results in terms of throughput and scalability, with reasonable gas costs for vaccination scenarios based on real data.
In the context of COVID-19 pandemic, the rapid roll-out of a vaccine and the implementation of a worldwide immunization campaign is critical, but its success will depend on the availability of an operational and transparent distribution chain that can be audited by all relevant stakeholders. In this paper, we discuss how blockchain technology can help in several aspects of COVID-19 vaccination scheme. We present a system in which blockchain technology is used to guaranty data integrity and immutability of beneficiary registration for vaccination, avoiding identity thefts and impersonations. Smart contracts are defined to monitor and track the proper vaccine distribution conditions against the safe handling rules defined by vaccine producers enabling the awareness of all network peers. For vaccine administration, a transparent and tamper-proof solution for side effects self-reporting is provided considering beneficiary and administrated vaccine association. A prototype was implemented using the Ethereum test network, Ropsten, considering the COVID-19 vaccine distribution conditions. The results obtained for each on-chain operation can be checked and validated on the Etherscan. In terms of throughput and scalability, the proposed blockchain system shows promising results while the estimated cost in terms of gas for vaccination scenario based on real data remains within reasonable limits.
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