Blockclique: scaling blockchains through transaction sharding in a multithreaded block graph

03/24/2018

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by   Sébastien Forestier, et al.

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Crypto-currencies based on the blockchain architecture cannot scale to thousands of transactions per second. We design a new crypto-currency architecture, called the blockclique, combining transaction sharding, where transactions are separated into multiple groups based on their input address, and a multithreaded directed acyclic block graph structure, where each block references one previous block of each thread. Simulations show that in a network of nodes with an average upload bandwidth of 32 Mbps, the blockclique reaches a throughput of 6,000 transactions per second, with a 2-minutes average transaction time.