2026-08-05T07:51:22Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:13534 2024-03-06T10:31:01Z ddc:004 open_access

Blockguard: Adaptive Blockchain Security (Short Paper) Rai, Shishir Hood, Kendric Nesterenko, Mikhail Sharma, Gokarna Blockchain Consensus Security Distributed algorithms We change the security of blockchain transactions by varying the size of consensus committees. To improve performance, such committees operate concurrently. We present two algorithms that allow adaptive security by forming concurrent variable size consensus committees on demand. One is based on a single joint blockchain, the other is based on separate sharded blockchains. For in-committee consensus, we implement synchronous Byzantine fault tolerance algorithm (BFT), asynchronous BFT and proof-of-work consensus. We evaluate the performance of our adaptive security algorithms. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Shishir Rai and Kendric Hood and Mikhail Nesterenko and Gokarna Sharma 2021 Is Part Of OASIcs, Volume 82, 2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/OASIcs.Tokenomics.2020.12 urn:nbn:de:0030-drops-135347 https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Tokenomics.2020.12 eng https://creativecommons.org/licenses/by/3.0/legalcode