1. Easy come - easy go divisible cash;Chan,1998
2. Zerocoin: Anonymous distributed e-cash from bitcoin;Miers,2013
3. A smart contract for boardroom voting with maximum voter privacy;McCorry,2017
4. An efficient privacy-preserving credit score system based on noninteractive zero-knowledge proof;Lin;IEEE Syst J,2021
5. Smart contract-based campus demonstration of decentralized transactive energy auctions;Hahn,2017