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#
Comprehensive review of 21 use cases of Hyperledger#
https://youtu.be/VQTARQSuUFU?t=1440
Use cases (some are still in proof of concept)#
- 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
- contract automation- like promotion in company (HR), consultant contract
- voting
- tokenisations - cross parties reward program(asiamiles), assets management (use in trading, convert different kinds of assets like house stock cash to token)
- 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)