Cryptology ePrint Archive: Report 2018/1230

Pooled Mining Makes Selfish Mining Tricky

Suhyeon Lee and Seungjoo Kim

Abstract: Bitcoin, the first successful cryptocurrency, uses the blockchain structure and PoW mechanism to generate blocks. PoW makes an adversary difficult to control the network until she retains over 50\% of the hashrate of the total network. Another cryptocurrency, Ethereum, also uses this mechanism and it did not make problem before. In PoW research, however, several attack strategies are studied. In this paper, we researched selfish mining in the pooled mining environment and found the pooled mining exposes mining information of the block which adversary is mining to the random miners. Using this leaked information, other miners can exploit the selfish miner. At the same time, the adversary loses revenue than when she does honest mining. Because of the existence of our counter method, the adversary with pooled mining cannot do selfish mining easily on Bitcoin or blockchains using PoW.

Category / Keywords: applications / blockchain

Date: received 22 Dec 2018

Contact author: orion-alpha at korea ac kr

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Version: 20181230:125843 (All versions of this report)

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