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16-Hyperledger -----------------------.pptx
- 1. Hyperledger Dr. Bahar Ali AssistantProfessor (CS), Institute of Management Sciences, Peshawar.
- 2. Contents What is Hyperledger? Why Hyperledger ? Private vs Public Blockchain Hyperledger Fabric Channel MSP Nodes Hyperledger Transaction Flow Hyperledger Testnetwork Deploy smart contract
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- 4. What is Hyperledger? Private Permissioned Blockchain
- 5. Why Hyperledger (EnterpriseBlockchain) ? Why Issues with Public blockchain
- 6. Issues with publicblockchain A B E F C Public Blockchain
- 7. Issues with publicblockchain A B E F Public Blockchain Confidentiality
- 8. A B C E F Issues withpublic blockchain
- 9. Issues with publicblockchain A B C E F Slow
- 10. Issues with publicblockchain A B C E F Scalable
- 11. Why Hyperledger (EnterpriseBlockchain) ?
- 12. Public Blockchain vsPrivate Blockchain Public Blockchain Private Blockchain Properties Decentralize Ledger Same Ledger Immutable Anonymous All node verification Smart Contract Transparent
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- 15. Introduction to HyperledgerFabric Hyperledger (or the Hyperledger project) is an umbrella project of open source blockchains and related tools, started in December 2015 by the Linux Foundation.
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- 18. Channel A channel isa private communication pathway between two or more members of a Hyperledger.
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- 20. MSP (Member ServiceProvider) MSP is a modular component that is used to manage identities on the blockchain network. This provider is used to authenticate clients who want to join the blockchain network.
- 21. Access Control List Anaccess control list (ACL) is a list of rules that specifies which users or systems are granted or denied access to a particular object or system resource. Full access of transaction can be restricted with this.
- 22. Different Types ofNodes • Committing Nodes - Nodes that have all the copies of the ledger. • Endorsing Nodes - Nodes that can execute chain code. • Ordering Nodes - Nodes that maintain the sequence of transactions.
- 23. Chaincode Chaincode is aprogram, written in Go, node. js, or Java that implements a prescribed interface.
- 24. Hyperledger Transaction Flow 1)Client initiating a transaction Read MSP Access Control List
- 25. Hyperledger Transaction Flow 2)Validation of transaction
- 26. Hyperledger Transaction Flow 2)Validation of transaction Transaction Proposal Transaction Proposal Transaction Proposal Endorsing Node Endorsing Node Endorsing Node
- 27. Hyperledger Transaction Flow 3)Simulating the transaction
- 28. Hyperledger Transaction Flow 3)Simulating the transaction Signed Transaction Proposal (Output 1) Endorsing Node Endorsing Node Endorsing Node Signed Transaction Proposal (Output 2) Signed Transaction Proposal (Output 3)
- 29. Hyperledger Transaction Flow 4)Verifying Proposal Response Signed Transaction Proposal (Output 1) Endorsing Node Endorsing Node Endorsing Node Signed Transaction Proposal (Output 2) Signed Transaction Proposal (Output 3) 51% consensus
- 30. Hyperledger Transaction Flow 5)Broadcast transaction to the orderer Orderer Node
- 31. Hyperledger Transaction Flow 6)Order transaction and create block Orderer Node
- 32. Hyperledger Transaction Flow 6)Order transaction and create block Orderer Node Endorsing Node Endorsing Node Endorsing Node Committing Node Committing Node
- 33. Hyperledger Transaction Flow 7)Peers validate each transaction in the block Orderer Node Endorsing Node Endorsing Node Endorsing Node Committing Node Committing Node
- 34. Hyperledger Transaction Flow EndorsingNode Endorsing Node Endorsing Node Committing Node Committing Node 7) Peers validate each transaction in the block
- 35. Hyperledger Transaction Flow EndorsingNode Endorsing Node Endorsing Node Committing Node Committing Node 8) Committing to their ledger
- 36. Hyperledger Transaction Flow 1)Client initiating a transaction 2) Validation of transaction 3) Simulating the transaction 4) Verifying Proposal Response 5) Broadcast transaction to the orderer 6) Order transaction and create block 7) Peers validate each transaction in the block 8) Committing to their ledger
- 37. Hyperledger Test Network Ordering Node CA OrderingOrganization Peer1 Organization 1 Organization 2 CA Peer1 CA
- 38. State Database Comp Id–123 Ownership - Kshitij Comp Id –123 Ownership - Karan Comp Id –123 Ownership - Kim Comp Id –123 Ownership - Raj Comp Id –123 Ownership - Rahul Latest Transaction Comp Id –123 Ownership - Rahul
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