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Sycomore : a Permissionless Distributed Ledger that self-adapts to Transactions Demand

Emmanuelle Anceaume 1 Antoine Guellier 1 Romaric Ludinard 2, 3 Bruno Sericola 4
1 CIDRE - Confidentialité, Intégrité, Disponibilité et Répartition
CentraleSupélec, Inria Rennes – Bretagne Atlantique , IRISA-D1 - SYSTÈMES LARGE ÉCHELLE
3 ADOPNET - Advanced technologies for operated networks
UR1 - Université de Rennes 1, IRISA-D2 - RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES, IMT Atlantique - IMT Atlantique Bretagne-Pays de la Loire
4 DIONYSOS - Dependability Interoperability and perfOrmance aNalYsiS Of networkS
IRISA-D2 - RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES, Inria Rennes – Bretagne Atlantique
Abstract : We propose a new way to organise both transactions and blocks in a distributed ledger to address the performance issues of permissionless ledgers. In contrast to most of the existing solutions in which the ledger is a chain of blocks extracted from a tree or a graph of chains, we present a distributed ledger whose structure is a balanced directed acyclic graph of blocks. We call this specific graph a SYC-DAG. We show that a SYC-DAG allows us to keep all the remarkable properties of the Bitcoin blockchain in terms of security, immutability, and transparency, while enjoying higher throughput and self-adaptivity to transactions demand. To the best of our knowledge, such a design has never been proposed so far.
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Emmanuelle Anceaume, Antoine Guellier, Romaric Ludinard, Bruno Sericola. Sycomore : a Permissionless Distributed Ledger that self-adapts to Transactions Demand. NCA 2018 - 17th IEEE International Symposium on Network Computing and Applications, IEEE, Nov 2018, Boston, United States. pp.1-8, ⟨10.1109/NCA.2018.8548053⟩. ⟨hal-01888265⟩

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