A comparison of blockchain technologies for distributed voting
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The document presents a comparison of blockchain technologies for distributed voting, highlighting the importance of anonymity and eligibility in the voting process. It discusses various blockchain solutions, including public and private networks, to ensure secure and efficient voting while maintaining voter privacy. A proposed hybrid solution combines Ethereum smart contracts with BigchainDB to assign addresses to voters and process votes.
A comparison of blockchain technologies for distributed voting
- 1. A comparison of Blockchain Technologies for distributed voting Blockchain Vlaanderen meetup #3 June 22th, 2016
- 4. Native mobile applications connected via a REST API Proof of Likes Multichain (multi asset bitcoin fork) Generates a key pair for each app and issues 100 vote tokens Full transparancy via the Explorer
- 5. But this is just a simple case...
- 6. Real life voting in Belgium
- 9. Guarantee full anonymity Requirements Required for each person of age Tallied the same day
- 10. Guarantee full anonymity Requirements Required for each person of age Tallied the same day No physical location required
- 11. Votes are registered in the chain, if the address can be linked to a person we fail the anonymity requirement. Challenges
- 12. Votes are registered in the chain, if the address can be linked to a person we fail the anonymity requirement. Challenges Only people who are eligible are allowed to vote, so the government needs to send these people a VOTE token. Which links person to an address.
- 13. Votes are registered in the chain, if the address can be linked to a person we fail the anonymity requirement. Challenges Only people who are eligible are allowed to vote, so the government needs to send these people a VOTE token. Which links person to an address. All eligible people are required to vote, how do we check this without linking them to an address.
- 14. So, how could we do this?
- 15. First things first… Paper letter with a personal token Login to a portal Generate a new anonymous address Issue a VOTE token to that address This action fulfils the voting duty requirement National Registry ! this portal knows exactly who you are and can link you to the address !
- 16. Smart contracts to the rescue • The smart contract is the only time, the login token and the generated address ever meet. • The smart contract code can be verified on the blockchain. We can be certain that it is does not store anything except a login code being used
- 17. A matter of scale 8.000.000 eligible voters
- 18. A matter of scale 370 transactions/ second 8.000.000 eligible voters
- 19. A large public network Validators/Miners A semi-private network with nodes at each political party, the EU, the UN, interested parties, ...
- 20. Our options
- 21. Network Consensus Transaction speed Smart contracts Largest public network Proof of Work 7t/s limit = 13 days! None Bitcoin Blockchain with Colored Coins addon
- 22. Network Consensus Transaction speed Smart contracts Private network Configurable Proof of Work 200t/s = 11 hours None Multichain
- 23. Network Consensus Transaction speed Smart contracts Public network Proof of Work 20t/s = 4.6 days Solidity Ethereum
- 24. Network Consensus Transaction speed Smart contracts Private network Configurable Proof of Work in theory 370t/s ~ in reality 20t/s = 4.6 days Solidity Private Ethereum
- 25. Network Consensus Transaction speed Smart contracts Public network Proof of Importance 2t/s = 46 days None NEM
- 26. Network Consensus Transaction speed Smart contracts Private network Federation 100k t/s = 80 seconds None BigchainDB
- 27. Network Consensus Transaction speed Smart contracts Private network Practical Byzantine Fault tolerance 210t/s = 10h Chaincode Hyperledger
- 28. Most secure Fast enough Smart contracts Quite a conundrum
- 30. Public Ethereum smart contract to assign address to voters BigchainDB to process the votes
- 31. So what do you think? https://proofoflikes.be
- 32. Thank You Roderik van der Veer @r0derik https://linkedin.com/in/roderik +32 491 50 58 15