Abstract
In the sensor blockchain network, sensors need to collect data continuously and upload it to the blockchain network for verification of data integrity. The deployment of smart contracts on the chain can be used to authenticate data visitors. Historical data is valuable for data visitors, but it is useless for sensor nodes that can continue to link data only with current information. With the passage of time, the data of the sensor blockchain network will continue to grow. A node data storage mode that can adapt to the continuous expansion of the blockchain scale is needed, which can encourage nodes to join the network to participate in consensus and jointly maintain the security of the blockchain data. This paper provides a segmented storage solution based on state and block compression for sensor device nodes with limited storage capacity. After experimental verification, this scheme can significantly reduce the storage cost. It allows nodes to use blockchain for a long time in sensor blockchain networks with large transaction volumes and a large number of smart contracts and allows new nodes to be deployed faster.
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