Z-Channel: Scalable and Efficient Scheme in Zerocash

  title={Z-Channel: Scalable and Efficient Scheme in Zerocash},
  author={Yuncong Zhang and Yu Long and Zhen Liu and Zhiqiang Liu and Dawu Gu},
  booktitle={IACR Cryptology ePrint Archive},
Decentralized ledger-based cryptocurrencies like Bitcoin present a way to construct payment systems without trusted banks. However, the anonymity of Bitcoin is fragile. Many altcoins and protocols are designed to improve Bitcoin on this issue, among which Zerocash is the first fullfledged anonymous ledger-based currency, using zero-knowledge proof, specifically zk-SNARK, to protect privacy. However, Zerocash suffers two problems: poor scalability and low efficiency. In this paper, we address… CONTINUE READING
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