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arXiv · 2003.03052

Combining GHOST and Casper

Vitalik Buterin·Diego Hernandez·Thor Kamphefner·Khiem Pham·Zhi Qiao·Danny Ryan·Juhyeok Sin·Ying Wang·Yan X Zhang
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Abstract

We present "Gasper," a proof-of-stake-based consensus protocol, which is an idealized version of the proposed Ethereum 2.0 beacon chain. The protocol combines Casper FFG, a finality tool, with LMD GHOST, a fork-choice rule. We prove safety, plausible liveness, and probabilistic liveness under different sets of assumptions.

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Vitalik Buterin, Diego Hernandez, Thor Kamphefner, Khiem Pham, Zhi Qiao, Danny Ryan, Juhyeok Sin, Ying Wang, Yan X Zhang. 2020-03-06. Combining GHOST and Casper. https://arxiv.org/abs/2003.03052

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