Blockchin architecture & use cases -part-2
- 1. 2 Mohammad Asif Waquar Senior Software Engineer atABNAMRO Bank @asifwaquar BlockchainArchitecture&UseCase–Part-2
- 2. 2 about me Senior Software Engineer at ABN AMRO https://www.linkedin.com/in/mohammad-asif-6a6153111/
- 3. RoadMap o Part-1 -Blockchain Introduction & Architecture on Azure. o Part-2 -FabricArchitecture & Installation on Azure o Part-3 - Block chain Hyper ledger deployment on Azure WorkBench o Part-4 - CordaArchitecture & Deployment on Azure. o Part-5 - Cordaworkflow & Swift paymentintegration. o Part-6 - Blockchain with Ethereum & Quorum and deploying in DAPPSAzure. o Part-7 - Handling Media & Documents in BlockChain o Part-8 - Security in Blockchain. o Part-9 - Block chain with IOT. o Part-10 - Handson Workshop on Blockchain.
- 4. Today’sAgenda o Recap part-1 o Blockchain use case for International Trade o SingleVMandMultiVMArchitecture o Demo of Fabric & chaincode Intsalltion
- 6. How Blockchain Works ?
- 15. Hyperledger Fabric Architecture Orderer • Consensus verification • CreatesBlocks CA • Registration ofidentities • Manage Certificates Peer • EndorsesTx • SimulatesTx • CommitsTx 3ComponentsofFabric Ledger Blockchain & WorldState • createCar • queryAllCars • queryCarProperties • changeCarColor • changeCarOwner • EndorsementPolicies • Assets:Anythingthat’s valuablefor theOrganization • Transactions(Statechangesof Assets) • GossipProtocol: Theglue that keepsthepeersin healthystate. Allthesecomponentscanbeclusteredfor scalabilityandto avoidSinglePointofFailure Channels SmartContract OtherConcepts • Private subnetfor a set of parties based on Smartcontract • Ledger/Channel • Peerscanhave multipleChannels • PrivateData 1 2
- 16. Blockchain Usecase for International Trade
- 17. Compliance (KYC,AML) Problems & deficiencies âś“ Work done in collecting KYC information unnecessary replicated by multiple institution . âś“ Isolated view of customer and their transaction insufficient to detect money laundering. âś“ Uncertainty in knowing if implemented practices are sufficient (over stringent policy hurtful for business.) âś“ AMLprocess are too fragmented and dependent on subjective human decision.
- 20. Overview of International Trade Inefficiencies • 12 parties • 27documents • Lowautomation Risks • Currencyfluctuation • Non-completion Result • Financing isexpensive • SMEs lockedout 3
- 21. Blockchain Enabled Future State No Reconciliation or Manual ValidationRequired Ledger nodes replicated with identical content via distributedconsensus Enhanced Trust through Smart Contracts E2E Real-time Visibility DocumentAccess Participant access based on permissions (Blockchain node) Address Complianceand Fraud Document state and origin known at all times (Blockchain content) $14T+ in global trade is financed Upto 3 weeks for documents to be verified $37.6B potential cost saving by eliminating paper
- 22. Single VM & Multi VM Network
- 23. Organisation
- 24. Nodes & Roles Committing Peer: Maintains ledger and state. Commits transactions.May hold smart contract(chaincode). Endorsing Peer: Specialized committing peer that receives a transaction proposal for endorsement, responds granting or denying endorsement. Must hold smartcontract OrderingNode: Approvesthe inclusion of transaction blocksinto the ledger and communicates with committing and endorsing peer nodes. Doesnot hold smart contract. Doesnot holdledger. Consensus is achieved using the following transaction flow: Endorse Order Validate
- 25. Ordering Service & Channel Theordering service packagestransactions into blocks to be delivered to peers. Communication with the service is viachannels. Different configuration options for the ordering service include: – SOLO • Singlenode for development – Kafka: Crashfault tolerantconsensus • 3 nodesminimum • Odd number of nodesrecommended O O O O Ordering-Service Channelsprovide privacy between differentledgers – Ledgersexist in the scopeofachannel • Channels canbe shared acrossan entire network ofpeers • Channels canbe permissioned for aspecific set of participants – Chaincodeis installed on peers to accesstheworldstate – Chaincodeis instantiated onspecific – Peerscanparticipate in multiplechannels – Concurrent execution for performanceand scalability E0 E1 O O O O Ordering-Service
- 26. Single Channel Network • All peers connect to thesamesystem channel (blue). • All peers have the samechaincodeand maintain the sameledger • Endorsement by peers E E E andE0, 1, 2 3 Key: E1 Client Application S D K Hyperledger FabricNetwork P B A B E2 A B E3 A B E0 A Endorser Ledger Committing Peer Application Ordering Node SmartContract (Chaincode) Endorsement Policy O O O O Ordering-Service
- 27. Multi-Channel Network • PeersE0and E3connect to the red channel for chaincodesYandZ • PeersE1and E2connect to the blue channel for chaincodesAandB Key: E2 Hyperledger FabricNetwork P Y Z A B A B E3 Y Z E0 P E1 Endorser Ledger Committing Peer Application Ordering Node SmartContract (Chaincode) Endorsement Policy Client Application S D K Client Application S D K O O O O Ordering-Service
- 28. Consortium Network Example of consortium network of 3 organisations Org 1 and Org 3 run peers Org 2 provide ordering service only.
- 29. Demo
- 30. Step1/3-Configure ordering service and setup peer nodes
- 31. Generating Configuration & Certs
- 33. Step 2/3-Create and Join Channel
- 34. Creating & Joining Channel
- 35. Step 3/3-Instantiate chaincode in channel. An Endorsement policy is applied once chain code is instantiated.
- 36. Step 3/3-Instantiate chaincode in channel. An Endorsement policy is applied once chain code is instantiated.
- 37. Endorsement policy An Endorsement policy describes the condition by which transaction can be endorsed.
- 40. Questions? 12
- 41. ThankYou 12