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Title: On Immutability of Blockchains
Authors: Landerreche, Esteban
Stevens, Marc
Keywords: blockchain;cryptographic immutability;cryptographic timestamping;proof-of-sequential-work
Issue Date: 2018
Publisher: European Society for Socially Embedded Technologies (EUSSET)
metadata.dc.relation.ispartof: Proceedings of 1st ERCIM Blockchain Workshop 2018
Series/Report no.: Reports of the European Society for Socially Embedded Technologies: vol. 2, no. 7
Abstract: Recently we presented a single-party cryptographic timestamping mechanism based on proof-of-sequential-work, which we proved secure in the universal composability framework [16]. This paper describes this construction and its security claims and uses it to construct a multi-party permissioned blockchain protocol and show that it achieves an immutability notion. Finally we discuss applications of this protocol, including unpermissioned blockchains, and how these may benefit.
metadata.dc.identifier.doi: 10.18420/blockchain2018_04
ISSN: 2510-2591
metadata.mci.conference.location: Amsterdam, Netherlands 8 - 9 May 2018
Appears in Collections:ERCIM-Blockchain 2018: Blockchain Engineering: Challenges and Opportunities for Computer Science Research

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