Download - Localfacts smartcontractjp
Thought about Local facts
How do we put local facts into blockchain ?
Tomoaki SatoSmart Contract Japan
How to get better results about the stock price of Japanese SME company on blockchain ?
tet
Blockchain is not good at local factsas the google does...
tet
good at ‘googlable’ information, but often misresults about the private information(company, real-property pricing, how to make money ? or somethings...)
1. Add location & Language Filter2. Deposit of fact providers3. Ask many professionals
tet
Add location or language filteryield more good results, but not enough
tet
Location separation
tet
fact provider X
Last staked pointfact
provider X
Last staked point
Separated consensus in data level, but value can be transferrable
Proof of location
tet
Mobile 4 G towerGPS
GPS is not enough.We need GPRS = GPS + Cellt tower
Language separation (optional)
tet
ex) When you search Japanese company stock information, it’s better for you to search by Japanese.
2. Deposit of fact providers~Fact providers should have responsibility of their information~
tet
Deposit as professional fact provider
tet
sha256(PREVHASH + ADDRESS + TIMESTAMP) <= 2^256 * BALANCE / DIFFICULTY
PoS Blockchain
Fact vaildation fee +Proof of Stake Reward
Local fact provider
Local fact provider
Deposit Deposit
Local fact provider
Deposit
When a provider cheat, they lose the deposit.
Cheating = vote to minority.Losing = moves the value from minority to majority
tet
PoS Blockchain
Local fact provider
Local fact provider
Deposit Deposit
Minority Local fact provider
Majority Local fact provider
Deposit
Deposit
When a provider cheat, they lose the deposit and the value moves to other validator in the same region
1 fact && 1 local
3. Ask many professionals (including prediction markets)
tet
Prediction market as a professional
tet
SellerBuyer
How much is the company’s stock price of the seller ?
(what we call oracle)
Decentralized Prediction marketPrediction marketProfessional
Prediction market as a professional
tet
SellerBuyer
How much is my company’s stock price? Please attach your sign to your prediction
(what we call oracle)
Decentralized Prediction marketPrediction marketProfessional