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Vreath meetup in January, 2019

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The slide used for Vreath meetup in January, 2019
[whitepaper] https://github.com/Vreath-core/Documents/blob/master/Vreath_white_paper_2018_12_19.pdf

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Vreath meetup in January, 2019

  1. 1. Vreath ~ Bring Cryptocurrency to Everyone ~
  2. 2. self‐introduction Sora Suegami Vreath Founder Me: @SoraSue77 Meetup:@vreath
  3. 3. What happens when anyone has cryptocurrency?
  4. 4. Why is cryptocurrency not popular?
  5. 5. High hurdles to get cryptocurrency at first
  6. 6. How to get cryptocurrency ① Register for an exchange ② KYC ③ Confirm residence ⑤ Buy cryptocurrency ⑥ Remit cryptocurrency to a wallet app ④ Deposit money in an exchange
  7. 7. It costs much time!
  8. 8. Get cryptocurrency within a few minutes
  9. 9. Zero Access Barrier
  10. 10. All smartphone users become cryptocurrency users
  11. 11. Value Breath Our Mission
  12. 12. Availability Solutions Proof of Unit
  13. 13. Existing way to distribute fees winner-take-all
  14. 14. Vreath way to distribute fees Share fees with all miners
  15. 15. Validator Buy Stake Proof of Unit New Block UnitsMiner Parallel mining
  16. 16. Proof of Unit Validator
  17. 17. Proof of Unit Validator
  18. 18. Proof of Unit Validator
  19. 19. Proof of Unit Validator
  20. 20. Make Cryptocurrency Easily Available Proof of Unit
  21. 21. New Concepts 1. Token Base 2. Request Tx & Refresh Tx 3. Unit with Parallel Mining
  22. 22. Token Base Any State • nonce • token • owner • amount • data Token State
  23. 23. Token Base Pure Function Style Input Data Base State input Smart Contract output Output State
  24. 24. Token Base EVM Style owner: Alice amount: 100
  25. 25. Token Base EVM Style owner: Alice amount: 50
  26. 26. Token Base Pure Function Style owner: Alice amount: 100
  27. 27. Token Base Pure Function Style owner: Alice amount: 100 owner: Alice amount: 50
  28. 28. Token Base Pure Function Style owner: Alice amount: 50
  29. 29. Token Base Input State limitation Alice’s State input Smart Contract output Bob’s State
  30. 30. Token Base Input State limitation Alice’s State1 input Smart Contract output Alice’s State2 Bob’s State1 input Smart Contract output Bob’s State2 Parallelize State Change
  31. 31. Request Tx & Refresh Tx Request Tx States Alice Bob 10-5 5+5 Requester
  32. 32. Request Tx & Refresh Tx Refresh Tx States Alice Bob 5 15 Refresher Your request is valid. I’ll change balances!
  33. 33. Request Tx & Refresh Tx Need mining for refresh tx! Refresher Address Output State Request Tx Info nonce Hash <= Target
  34. 34. requester refresher Request Tx & Refresh Tx incentive
  35. 35. requester refreshers Request Tx & Refresh Tx incentive
  36. 36. requester Fastest refresher Request Tx & Refresh Tx incentive
  37. 37. All refreshers did mining Request Tx & Refresh Tx
  38. 38. Unit with Parallel Mining Extract Unit Refresh Tx Refresher Address Output State Request Tx Info nonce
  39. 39. Unit with Parallel Mining Miners Parallel Mining Units
  40. 40. We need Scalability
  41. 41. Scalability Solutions Child Chains
  42. 42. Child Chains ≒ Plasma Many trustful chains refresh states Chain administrators who confirm invalid transactions are
  43. 43. Child Chains Main Chain Child Chain Submit regularly • Changed state address • Address-hash map of new states • Merkle root of input data • Smart contract codes • Administrators’ public keys • Administrators’ signature
  44. 44. Fraud Proof Invalid Submission Invalid Output State Hash Input Data Base State Smart Contract Code Valid Output State Hash Submit Raw data Prove the Existence
  45. 45. Fraud Proof Judgment is Automatic
  46. 46. Child Chain Problems No Challenger
  47. 47. Child Chain Problems No Challenger zk-SNARK to prove valid state change
  48. 48. Vreath aims to be Available Cryptocurrency & Scalable Blockchain
  49. 49. The World Wide Common Value Basis
  50. 50. reath Our Mission ValueB
  51. 51. reath Our Mission V

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