TwinsCoin: A Cryptocurrency via Proof-of-Work and Proof-of-Stake

@inproceedings{Chepurnoy2018TwinsCoinAC,
  title={TwinsCoin: A Cryptocurrency via Proof-of-Work and Proof-of-Stake},
  author={Alexander Chepurnoy and Tuyet Duong and Lei Fan and Hong-Sheng Zhou},
  booktitle={BCC '18},
  year={2018}
}
We design and implement TwinsCoin, the first cryptocurrency based on a provably secure and scalable public blockchain design using both proof-of-work and proof-of-stake mechanisms. Different from the proof-of-work based Bitcoin, our construction uses two types of resources, computing power and coins (i.e., stake). The blockchain in our system is more robust than that in a pure proof-of-work based system; even if the adversary controls the majority of mining power, we can still have the chance… 

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