A Correctable Public Blockchain

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A key property of current blockchain solutions is the immutability of data stored in the blockchain. While this is a desired feature e.g. for crypto currencies, it can be a show stopper for other use cases that still require ex-post correction or removal of stored data. Existing proposals for redactable blockchains address this issue, but support the correction of specific types of stored data only. To overcome these limitations, we propose and introduce a correctable blockchain architecture that supports correction of arbitrary data. The proposed solution uses a consensus-enforced voting mechanism for decentralized decision making on requested data corrections. Information on applied corrections is stored in a second chain, which ensures that the corrected chain can still be validated successfully. We have verified the security of the proposed correctable blockchain architecture by means of a detailed security analysis. Furthermore, we have evaluated the proposed solution by means of a first reference implementation, which demonstrates the solution's feasibility. First experiments conducted with this reference implementation indicate that the added data-correction functionality has only negligible impacts on the overall performance.

Original languageEnglish
Title of host publication2019 18th IEEE International Conference on Trust, Security and Privacy in Computing and Communications/13th IEEE International Conference on Big Data Science and Engineering, TrustCom/BigDataSE 2019
PublisherInstitute of Electrical and Electronics Engineers
Pages554-561
Number of pages8
ISBN (Electronic)9781728127767
DOIs
Publication statusPublished - 1 Aug 2019
Event18th IEEE International Conference On Trust, Security And Privacy In Computing And Communications/13th IEEE International Conference On Big Data Science And Engineering - Rotorua, New Zealand
Duration: 5 Aug 20198 Aug 2019

Conference

Conference18th IEEE International Conference On Trust, Security And Privacy In Computing And Communications/13th IEEE International Conference On Big Data Science And Engineering
Abbreviated titleTrustCom/BigDataSE 2019
CountryNew Zealand
CityRotorua
Period5/08/198/08/19

Keywords

  • Consensus enforced voting
  • Correctable blockchain
  • Editable blockchain
  • GDPR
  • Immutability
  • Redactable blockchain

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Software
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality
  • Artificial Intelligence

Fingerprint Dive into the research topics of 'A Correctable Public Blockchain'. Together they form a unique fingerprint.

Cite this