Detection method for selfish mining behaviors on workproof mechanism block chain

Abstract

The invention discloses a detection method for selfish mining behaviors on a workproof mechanism block chain. The detection method comprises the following specific steps: S1, monitoring the situationthat each miner publishes a block in the block chain; S2, when a suspicious block is monitored, respectively calculating the values of Sstate, Fstate and Hstate; S3, judging a size relationship amongthe values of the Sstate, the Fstate and the Hstate: if the Hstate is less than the Sstate or the Fstate is less than 0, determining that the monitored suspicious block is published by a selfish miner; S4, if the condition in S3 does not exist, calculating Asize/n and p, and if Asize/n is less than p, enabling the regional block to refuse to monitor the suspicious block, otherwise, enabling the regional block to receive the monitored suspicious block. According to the method, selfish mining behaviors in the block chain can be discovered directly through existing public information, the changeof a block chain difficulty adjustment scheme is not involved, and the income of honest miners is not influenced.

Description

Technical field [0001] The invention relates to the technical field of blockchain networks, in particular to a method for detecting selfish mining behaviors on a blockchain with a workload proof mechanism. Background technique [0002] The workload proof mechanism is a kind of consensus mechanism and is widely used in various blockchains. In the blockchain, certain network nodes will pack a certain number of transactions into blocks to obtain the revenue corresponding to the block. These nodes are called miners; in order to prove that they have the right to book a certain block, That is, the income of a certain block should belong to the miner; the miner will also pack its own workload into the corresponding block, and other miners will evaluate the workload. If most miners think it is effective, the block will be Accepted by the blockchain network, the miners who dig out the block get corresponding benefits; [0003] In a blockchain with a proof-of-work mechanism, the block gene...

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Problems solved by technology

[0016] However, the above-mentioned method of reducing the advantage of selfish miners by increasing the difficulty of mining is a lose-lose method. Since this will increase the cost of mining for all miners at the same time, the income of honest miners will decrease, and computing power will be wasted.

At the same time, modifying the difficulty adjustment rules may also lead to unpredictable problems in other aspects. For example, the difficulty caused by "difficulty bombing" will increase exponentially with the increase of the height of the block, and finally the new block cannot be mined;

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