Blockchain Storage Analysis and Optimization of Bitcoin Miner Node

Aiming at the storage problem of blockchain, a space storage optimization scheme based on the InterPlanetary File System (IPFS) is designed. The scheme mainly achieves the purpose of space optimization by summarizing the blocks regularly, excluding the expired Transaction Output (TXO) that has no effect on verification. The Unspent Transaction Output (UTXO) will be saved as a file on the IPFS network during optimization. In this way, the miner node can quickly get the file and start mining. The ultimate goal is to optimize the storage space for the node and to increase the synchronization efficiency of the newly added miner node. The simulation experiment of the proposed optimization scheme is carried out. The experimental results show that the scheme can summarize the historical transaction data regularly, eliminate the Spent Transaction Output (STXO) which has no effect on the verification transaction, so as to effectively reduce the node storage space.