• 2-hop Blockchain
  Tuyet Duong, Lei Fan, Hong-Sheng Zhou
  IACR ePrint Report 2016/716
  Note: This is the first (and only known) provably secure and scalable public blockchain using proof-of-stake. We are pushing this method to the practice; please see our TwinsCoin project.
  An early version titled "Securing Bitcoin-like Blockchains against a Malicious Majority of Computing Power"
  
  

External collaborators:
Alexander Chepurnoy (IOHK), Lei Fan (SJTU)