000220211 001__ 220211
000220211 005__ 20190415234936.0
000220211 037__ $$aPOST_TALK
000220211 245__ $$aBitcoin Meets Collective Signing
000220211 269__ $$a2016
000220211 260__ $$c2016
000220211 336__ $$aPosters
000220211 513__ $$aPosters
000220211 520__ $$aWhile showing great promise, Bitcoin requires users to wait tens of minutes for transactions to commit, and even then, offering only probabilistic guarantees. This paper introduces ByzCoin, a novel Byzantine consensus protocol that leverages scalable collective signing to commit Bitcoin transactions irreversibly within seconds. ByzCoin achieves Byzantine consensus while preserving Bitcoin's open membership by dynamically forming hash power-proportionate consensus groups that represent recently-successful block miners. ByzCoin employs communication trees to optimize transaction commitment and verification under normal operation while guaranteeing safety and liveness under Byzantine faults, up to a near-optimal tolerance of f faulty group members among 3f + 2 total. ByzCoin mitigates double spending and selfish mining attacks by producing collectively signed transaction blocks within one minute of transaction submission. Tree-structured communication further reduces this latency to less than 30 seconds. Due to these optimizations, ByzCoin achieves a throughput higher than PayPal currently handles, with a confirmation latency of 15-20 seconds.
000220211 700__ $$g254967$$aKokoris Kogias, Eleftherios$$0250278
000220211 700__ $$g264772$$aJovanovic, Philipp Svetolik$$0249578
000220211 700__ $$g195531$$aGailly, Nicolas$$0250934
000220211 700__ $$g264505$$aKhoffi, Ismail$$0(EPFLAUTH)264505
000220211 700__ $$g111443$$aGasser, Linus$$0(EPFLAUTH)111443
000220211 700__ $$g257875$$aFord, Bryan Alexander$$0249220
000220211 7112_ $$dMay 23, 2016$$cSan Jose, California, USA$$a37th IEEE Symposium on Security and Privacy
000220211 8560_ $$fnada.guerraoui@epfl.ch
000220211 8564_ $$uhttps://infoscience.epfl.ch/record/220211/files/16-poster_abstract.pdf$$zAbstract$$s69805$$yAbstract
000220211 909CO $$qGLOBAL_SET$$ppresentation$$pposter$$ooai:infoscience.tind.io:220211
000220211 917Z8 $$x254967
000220211 937__ $$aEPFL-POSTER-220211
000220211 973__ $$aEPFL$$sPUBLISHED
000220211 980__ $$aPOST_TALK
000220211 999C0 $$xU13061$$pDEDIS$$mkarine.delvert@epfl.ch$$0252572