They did use our permissioned skipchain available on: https://github.com/dedis/cothority https://github.com/dedis/cothority and ran some nodes on a server. Ins

They did use our permissioned skipchain available on: https://github.com/dedis/cothority https://github.com/dedis/cothority and ran some nodes on a server. Instead of burning 200kWh for one transaction, a voting consensus system is enough. BTW, there is also an e voting system in that repo, using neff shuffles.