Corpus ID: 220347440

GRANDPA: a Byzantine Finality Gadget

@article{Stewart2020GRANDPAAB,
  title={GRANDPA: a Byzantine Finality Gadget},
  author={Alistair Stewart and Eleftherios Kokoris-Kogia},
  journal={ArXiv},
  year={2020},
  volume={abs/2007.01560}
}
Classic Byzantine fault-tolerant consensus protocols forfeit liveness in the face of asynchrony in order to preserve safety, whereas most deployed blockchain protocols forfeit safety in order to remain live. In this work, we achieve the best of both worlds by proposing a novel abstractions called the finality gadget. A finality gadget allows for transactions to always optimistically commit but informs the clients that these transactions might be unsafe. As a result, a blockchain can execute… Expand
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