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- W4207018085 abstract "Bitcoin builds upon an unstructured peer-to-peer overlay network to disseminate transactions and blocks. Broadcast in such a network is slow and brings inconsistencies, i.e., peers have different views of the system state. Due to the delayed block propagation and the competition of mining, forking, i.e., the blockchain temporarily diverges into two or more branches, occurs frequently, which wastes computation power and causes security issues. This paper proposes an autonomous and distributed topology optimization mechanism to reduce block propagation delay and hence reduce the occurrence of blockchain forks. In the proposed mechanism, a node can autonomously update his neighbor set using the information provided by his current neighbors, since each neighbor will recommend a peer from his own neighbor set, i.e., a neighbor's neighbor, to this node. Each recommendation is based on a peer's propagation ability, which is characterized as a criteria function obtained through a combination of empirical analysis and machine learning. We further propose some metrics to evaluate a Bitcoin network topology. Experiment results reflect the effectiveness of the proposed mechanism and also indicate the correlation between block propagation time and fork rate." @default.
- W4207018085 created "2022-01-26" @default.
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- W4207018085 date "2021-12-01" @default.
- W4207018085 modified "2023-09-25" @default.
- W4207018085 title "Taming Propagation Delay and Fork Rate in Bitcoin Mining Network" @default.
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- W4207018085 doi "https://doi.org/10.1109/blockchain53845.2021.00050" @default.
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