BlockChain

[논문 세미나] Bullshark: DAG BFT Protocols Made Practical

Authors: Alexander Spiegelman, Neil Giridharan, Alberto Sonnino, Lefteris Kokoris-Kogias Journal/Conference: ACM CCS '22 Source: https://arxiv.org/abs/2201.05677 Presentation material: Abstract We present Bullshark, the first directed acyclic graph (DAG) based asynchronous Byzantine Atomic Broadcast protocol that is optimized for the common synchronous case. Like previous DAG-based BFT protocols..

[논문 리뷰] DORA: Distributed Oracle Agreement with Simple Majority

Authors: Prasanth Chakka, Saurabh Joshi, Aniket Kate, Joshua Tobkin, David Yang Journal/Conference: ICDCS '23 Source: https://arxiv.org/abs/2305.03903 Abstract Oracle networks feeding off-chain information to a blockchain are required to solve a distributed agreement problem since these networks receive information from multiple sources and at different times. We make a key observation that in m..

[논문 리뷰] When Private Blockchain Meets Deterministic Database

Authors: Ziliang Lai, Chris Liu, Eric Lo Journal/Conference: ACM PODS ‘23 Source: https://dl.acm.org/doi/10.1145/3588952 presentation materials: Abstract Private blockchain as a replicated transactional system shares many commonalities with distributed database. However, the intimacy between private blockchain and deterministic database has never been studied. In essence, private blockchain and ..

[KCC 2023] Survey on Asynchronous BFT consensus Algorithms for Scalable and Robust Blockchain

Author: Donghyeon Ryu, Chanik Park in POSTECH Journal/Conference: KCC '23 Paper: (eng) (kor) Abstract Blockchain technology is being applied to various areas such as non-fungible tokens (NFTs), decentralized finance (DeFi), security tokens (STs), central bank digital currencies (CBDCs), and decentralized identity (DID) based on its decentralization, transparency, and high reliability. However, t..

Paper references about Hyperledger fabric

[StreamChain] StreamChain: Do Blockchains Need Blocks? (ACM SERIAL'18) : https://doi.org/10.1145/3284764.3284765 [FastFabric] FastFabric: Scaling Hyperledger Fabric to 20,000 Transactions per Second (IEEE ICBC '19) : https://arxiv.org/abs/1901.00910 [Fabric++] Blurring the Lines between Blockchains and Database Systems: the Case of Hyperledger Fabric. (ACM PODS ’19) : https://bigdata.uni-saarlan..

[논문 세미나] Why and How zkSNARK Works Definitive Explanation

Authors: Maksym Petkus Journal/Conference: arXiv '19 Source: https://arxiv.org/abs/1906.07221 Presentation material: Abstract Despite the existence of multiple great resources on zk-SNARK construction, from original papers1 to explainers2 , due to the sheer number of moving parts the subject remains a black box for many. While some pieces of the puzzle are given one can not see the full picture ..

[논문 리뷰] Narwhal and Tusk: A DAG-based Mempool and Efficient BFT Consensus

Authors : George Danezis, Lefteris Kokoris-Kogias, Alberto Sonnino, and Alexander Spiegelman Journal/Conference : EuroSys '22, New York, NY, USA, 34–50. Source : https://doi.org/10.1145/3492321.3519594 Abstract We propose separating the task of reliable transaction dissemination from transaction ordering, to enable high-performance Byzantine fault-tolerant quorum-based consensus. We design and e..

[논문 세미나] HotStuff: BFT Consensus with Linearity and Responsiveness

Authors: Yin, M., Malkhi, D., Reiter, M. K., Gueta, G. G., & Abraham, I. Journal/Conference: In Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing (pp. 347-356). Source: https://dl.acm.org/doi/10.1145/3293611.3331591 Presentation material: 저자인 Dahila Malkhi 가 HotStuff-2 를 새롭게 제안했다. paper 는 작성중인 draft 만 발견할 수 있다. 이번 세미나 자료에는 hotstuff-2 에 대한 간략한 개념도 포함했다. Abstract We pres..