Blockchain use cases

Trust Over IP: Hyperledger Ursa, Indy, and Aires #

https://www.youtube.com/watch?v=FfuhlF9ZYPM

Notes #

• prove the credential without CA
• trusted issuer (eg: gov) issues the identity token (eg: driving licence) -> send it to a crypto account (like sending btc to someone)
• on the blockchain, it shows a record that the account owns that licence. (like you can check your btc balance / NFS on chain explorer)
• anyone can request that you own that account (like an approval transaction from dapp). You can decide to share your data to what extent
• send the data to requester and it can be verified as it is signed by issuer
• blockchain is used to prove the ownership of your identities
• data can be stored off chain, sign it and verify with issuer’s account
• hacking personal accounts become useless -> not cost effective, you can hack a single person each time
• stealing / leading personal data is useless -> no proof, no one will accept

Example #

british columbia

Comprehensive review of 21 use cases of Hyperledger #

https://youtu.be/VQTARQSuUFU?t=1440

Use cases (some are still in proof of concept) #

1. end to end tracking (supply chain, different parties can participate eg: bank insurance company consultant retail…) 2.identity management - eg: allow 3rd parties to access your data with requests, prevent fraud, credit checking, hash your passport/fingerprint so you can verify it is your identity
2. contract automation- like promotion in company (HR), consultant contract
3. voting
4. tokenisations - cross parties reward program(asiamiles), assets management (use in trading, convert different kinds of assets like house stock cash to token)
5. immutable record- law enforcement investigation, accounting, credit check, insurance claim, medical history, law…

Hyperledger Fabric Business Use Cases #

https://youtu.be/1ps4PJtFRfY?t=544

IBM food trust #

• safety
• sustainability
• cost optimization (inventory / transportation )
• tracking

Tradelens -> (supply chain for trading) #

• costs 1.8T / year -> potential saving ~10% costs

IBM blockchain world wire #

• world wire solution with blockchain
• use stellar protocol

Singapore Exchange: Clearing Financial Transactions on Amazon Managed Blockchain #

https://www.youtube.com/watch?v=nUre2ELySdo

blockchain is used to handle the payment and settlement of securities

the method they used called DVP (delivery versus payment) = a way to ensure cash and securities can simultaneously exchange

client can be

• buyer = buy securities with eth
• seller = sell securities with eth

In the architecture,

• hyperledger = securities
• eth client = cash

Transaction will come across with both ledgers

arbitrator and observer with receive activities on chain

• arbitrator = mediator = handle dispute
• observer = regulator = do regulatory report

Pros with AWS Managed Blockchain #

• no need to build the ledger by themself
• focus on the smart contract
• a single blockchain network can effectively work across multiple parties

An Overview on Blockchain Services from AWS #

https://www.youtube.com/watch?v=WAIOBeQA2QQ

Pros of blockchain network #

• ledger database (immutable transaction)
• consensus
• decentralisation
• smart contract
• ease for audit

Hyperledger fabric VS ETH #

• authentication
• access control
• easy to add user
• easy to duel with settlement (bank)
• faster than centialization
• private ledger

use case #

• trading
• supply case

Enhanced Transparency and Frictionless Supply Chain with Blockchain #

https://www.youtube.com/watch?v=2NqbUb4rT88&list=WL&index=46

B2B Business

buy and sell order between Bottlers

• visibility cross supply chain
• reduce manual process and communicate between sellers and buyers
• dispute resolution (smark contract) -> I think we can use TimeLock to do partial transaction
• easy to scale
• no need to build a different api for each system (mesh network n(n-1)/2)