Blockchain for Java Developers - Cloud Conference Day
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Blockchain for Java Developers - Cloud Conference Day
- 1. Blockchain for Java Developers Juarez Junior Azure Developer Relations Lead Microsoft juarez.junior@microsoft.com Twitter/Medium: @juarezjunior linkedin.com/in/jujunior
- 2. Juarez Junior – https://twitter.com/juarezjunior - 24 years in IT (professional) + 8 years (amateur) - 9 years of experience in Developer Relations / Community / Mktg - 15 years of experience in core software engineering/architecture - Nokia Developers, Global Champion - IBM Mobile Evangelist & Global Thought Leader - IBM Cloud & Watson Evangelist, IBM Cloud Tech Rockstar Europe - Oracle Developers Director, EMEA Advocacy & Strategy Lead - Microsoft Azure DevRel in Ireland / Microsoft WE HQ - Cloud, DevOps, Java, AI, IoT, Mobile, Blockchain(IBM, Oracle, MSFT)
- 4. Blockchain technology What is blockchain? Common scenarios
- 5. The ledger can only be updated by network consensus, and information can’t be altered or deleted without the knowledge of the whole network Everyone in the network has an individual, identical copy Data is stored in a ledger— a record of every transaction Blockchain streamlines these processes by establishing a secure, shared source of truth
- 6. Blockchain Networks Consortium Woodgrove Financial Contoso Bank Northwind Traders Bank b Insurance c Investment consortium c Bank A Blockchain Location 1 Location 2 Location 3 Location 4 Department A Department B Public blockchain Person a Woodgrove Financial Person B Northwind Traders Bank 6 Bank 1 Consortium 6 Public (permissionless) Consortium (permissioned) Private • Many, unknown participants • Writes by all participants • Reads by all participants • Consensus by Proof of Work • Known participants from one org • Write permissions centralized • Reads may be public or restricted • Multiple algorithms for consensus • Known participants from multiple orgs • Writes require consensus of n participants • Reads may be public or restricted • Multiple algorithms for consensus
- 7. Corda Chain Enterprise Ethereum Quorum Permissionless and Permissioned
- 8. Transactions, Hashes and Blocks GENESIS BLOCK (must be the root for all on the same chain) Transaction 0 Transaction 1 Transaction 2 Transaction 3 Transaction 4 New Hash + Block0 Hash First Hash New Hash + Block1 Hash New Hash + Block2 Hash 0 seconds ~12 seconds ~24 seconds ~36 seconds
- 10. Blockchain has broad applications across industries Loyalty tracking Product provenance Logistics management Digital rewards P2P selling Ticket purchases Asset tracking Real-time auction for supplier contracts Supply chain transparency Dynamic commodities pricing Claims management MBS/Property payments Fraud detection Automated underwriting Risk visualizations Licensing and ID Benefits distribution Aid tracking Military security Copyrights Audit compliance Bond issuance Trade finance Loan syndication Post trade settlement Global payments Derivatives trading KYC/AML Personalized medicine Records sharing Compliance Agricultural authentication Pharmaceutical purity Manufacturing Retail Insurance Government Banking and Capital Markets Health
- 12. Corda - Introduction Corda R3 JVM CORDA BY R3
- 13. Corda – Technical details JVM-based AMQP JDBC Java Kotlin Token SDK CORDA BY R3
- 15. Corda – Languages and Tools CORDA BY R3
- 17. Corda on Azure + Code Samples Corda on Azure — How to deploy and run a demo Corda network Corda on Azure — Deploying a Corda Testnet node Java Kotlin CORDA BY R3
- 19. Hyperledger Fabric Blockchain • Permissioned, Enterprise • Hyperledger Fabric – open-source protocol for distributed ledger solutions – Provides a permissioned blockchain model with membership services – Offers a modular architecture allowing components, such as consensus and membership services, to be pluggable – Enables pluggable data store, consensus protocols, and multiple providers of membership services – Programmable – leverages containers to host smart contracts – Focuses on a permissioned implementation with confidentiality/privacy provisions – No crypto required • Hosted by The Linux Foundation – Same governance model – Other projects as part of Hyperledger Foundation ecosystem (Indy, Iroha, Sawtooth) HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION
- 20. Hyperledger Fabric Blockchain HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION
- 22. Hyperledger Fabric – Transaction Flow HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION Client Application Fabric SDK Keys Membership Service Peers Endorser Simulates TX World State Committer Effect changes Ordering Service Certificate Authority Federated Identity 4.0 - Deliver TX Batch Validate Signatures and Authorization Membership Services container Peer container Orderer container Orders TXs into batches according to consensus Container Legend Dev Code 3.0 - Submit Endorsed TX Includes RWset and endorser signatures Ledger 5.0 – Writes ledger block 5.1 - Updates State 6.0 – Commit Notification Fabric Code Smart contract container Smart Contract (Chaincode)
- 24. Hyperledger Blockchain QUORUM BY J.P. MORGAN
- 25. Hyperledger on Azure with Azure Kubernetes Service https://medium.com/@juarezjunior/how-to-deploy- your-first-hyperledger-fabric-components-with- azure-kubernetes-service-aks-760563d9d543 Marketplace GitHub QUORUM BLOCKCHAIN BY J.P. MORGAN
- 27. Transform your business with blockchain on Azure Create smarter and more efficient processes with Azure blockchain offerings Azure Blockchain Service Azure Blockchain Workbench Azure Blockchain Developer Kit Build, govern, and expand consortium blockchain networks Easily prototype blockchain apps in the cloud Connect and integrate to existing apps and move to production
- 28. Azure Blockchain Development Kit AZURE BLOCKCHAIN DEVELOPER EXPERIENCE
- 29. End-to-end Github examples that help connect and integrate blockchain with existing apps AZURE BLOCKCHAIN DEVELOPER EXPERIENCE
- 30. Building an end-to-end blockchain app is a huge undertaking Manually deploy ledger Write business logic Orchestrate signing, hashing and routing Store smart contract reference data Synchronize data with off- chain DB Ingest messages and events Build web client API management Manage keys Customize integrations Extend capabilitie Integrate with existing business apps Configure consortium network Link identities to federated systems
- 33. Azure is the best cloud for Blockchain Ahead of the competition An open, app-focused approach validated by Gartner, Forrester and many other third-party analysts Thoughtful product portfolio The most open and comprehensive blockchain portfolio to simplify development of this new class of applications Trusted by customers and partners Businesses have built thousands of blockchain apps on Azure working with our rich ecosystem of blockchain partners
- 34. Streamline Blockchain app development AZURE BLOCKCHAIN Xamarin IoT Hub Gateway Service API Transaction Builder + Signer Azure Key Vault Azure SQL database Storage (Azure Ethereum Router Quorum Router Azure Blockchain Service DLT Watcher Event Grid iOS App Android App Ethereum
- 35. Simple Blockchain governance / management AZURE BLOCKCHAIN SERVICE
- 37. Join customers and partners building blockchain apps on Azure Partners Customers
- 38. © Copyright Microsoft Corporation. All rights reserved. Thank You and Q&A!
- 39. Blockchain for Java Developers Scan this QR-code to access free educational resources, step-by-step learning guides as well as get practical experience in Blockchain! https://aka.ms/AAa4exo Don’t forget to add Microsoft Azure as a skill to your LinkedIn account to stay connected with our developer community! + Microsoft Azure We post the latest announcements about free events for developers on our official Twitter account! twitter.com/MSDev
- 42. Corda – Key concepts CORDA BY R3
- 43. Corda – The ledger CORDA BY R3
- 44. Corda – Transactions and flows CORDA BY R3 Transactions Flows
- 45. Corda – Consensus algorithms CORDA BY R3 Verification Consensus Unique Consensus
- 46. Corda – Example cash transfer flow CORDA BY R3
- 48. Corda – Blocks diagram CORDA BY R3
- 49. Corda – Network components CORDA BY R3 A CORDA network has:
- 50. Corda – Network components CORDA BY R3 A Corda network has:
- 51. Corda – Network architecture CORDA BY R3
- 52. Corda – Cloud network topology CORDA BY R3 A Corda network is:
- 53. CORDA – Business network (consortium) CORDA BY R3 A Corda consortium is: business client app CorDapp nodes org Doorman Notary Oracles Possibly messaging Gateways
- 55. History of Corda on Azure 2016 Corda solution added to Azure Marketplace 2017 Partnership announced between R3 and Microsoft 2018 Onboarded Insurwave consortium on Azure 2019 Introduced Corda Logic Apps and Flow to help with integration
- 56. Corda on Azure CORDA BY R3
- 57. Deploy a Corda Node with VMs Marketplace
- 58. Corda – Blueprint architecture with VMs on Azure
- 60. Hyperledger Fabric – Transaction Flow HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION Client Application Fabric SDK Keys Membership Service Peers Endorser Simulates TX World State Committer Effect changes Ordering Service Certificate Authority Federated Identity 4.0 - Deliver TX Batch Validate Signatures and Authorization Membership Services container Peer container Orderer container Orders TXs into batches according to consensus Container Legend Dev Code 3.0 - Submit Endorsed TX Includes RWset and endorser signatures Ledger 5.0 – Writes ledger block 5.1 - Updates State 6.0 – Commit Notification Fabric Code Smart contract container Smart Contract (Chaincode)
- 62. Hyperledger Fabric - Architecture HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION Distributed Ledger Technology Services APIs, Events, SDKs SMART CONTRACT Chain-code Services AP Membership Services Enrollment Attributes Consensus Services Distributed Ledger Ordering Service Network Protocol Endorsement Validation Secure Container Secure Registry TRANSACTIONSLEDGERIDENTITY Security and Crypto Services
- 63. Hyperledger Fabric - Architecture HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION
- 64. Hyperledger Fabric - Block HYPERLEDGER FABRIC BY HYPERLEDGER FOUNDATION
- 66. June 18, 2019 | Microsoft News Center
- 67. Hyperledger on Azure Marketplace Hyperledger Fabric Consortium on Azure Kubernetes Service
Editor's Notes
- Hello, my name is Juarez Junior and today I want to talk with you about how you can capitalize on the value of blockchain with Microsoft Azure Blockchain. Let’s get started.
- Note: This slide is animated and requires a click through. Blockchain revolutionizes the establishment of trust by acting as a secure, shared source of trust that exists between cross-party organizations. <click> Blockchain does this by storing a record of every transaction on a ledger, similarly to how someone records data in a spreadsheet or database. <click> But unlike a typical spreadsheet or database, everyone on the blockchain network has their own identical copy of the ledger. And if someone wants to update the record? <click> Before any transaction is added, altered, or deleted, every network member must agree to the change. This immutability makes it theoretically impossible to fraudulently alter data, since all changes must be approved by network consensus. T: By providing a platform for cross-party consensus, blockchain helps enterprise ensure that their data is always telling the truth. <click>
- Before we get into how the network does its magic, let’s clear up some complexity. There are 3 types of blockchain network, there are actually just 2, but for the sake of completeness we have 3 here. The first is a public network, this is Bitcoin and Ethereum and Ethereum Classic and Ripple and any other network that some one creates and other join anonymously. The key is openness, anyone can join, no permission required. And anonymity, no one knows who you are and whether your intentions are good or not. The other type is private or consortium. These are essentially the same thing, except with private you might be within a single organisation or conglomerate, but if you can deem value from a blockchain in this case, you really should just call yourselves a consortium. In this model things aren’t open, you can’t just join the network and start mining blocks and making money. On-boarding new members usually entails a governance process of some sort and the consortium itself decides how the nodes on the network communicate. Do we use the open internet? Do we want our own private network over a VPN? The consortium decides. In private or consortium networks there is usually no need for economic incentives for the mining nodes. Some broader, strategic business incentive or return on investment exists to justify the cost of running the network and mining nodes.
- When have the ability to just join without permission, we call this Permissionless permissioned ledger, meaning it is a ledger accessible (for reading or for writing) only by known and pre-approved parties. This differs from a permissionless ledger, like Bitcoin and Ethereum, where anyone can read or write to the blockchain
- Right, let’s get into this blockchain stuff. To create a new blockchain network, we need the first block. It’s called the genesis block and it holds identifier and configuration information used by the network. But importantly, it holds the first hash, as previously mentioned. This genesis block is also required by any new nodes that need to join the network. They must be provided the genesis block so that they understand the configuration for the network, but also so that they have the first hash and can participate in mining. So this is at time 0, when I start the network, at this point nodes can accept transactions. These transactions could be the creation of accounts, the movement of ether, the creation of a smart contract, any transaction that could change the state of the blockchain. Then, at the time configured for the network, in this example 12 seconds. The network mines the next block. This block is a hash calculated by combining hashes of the transactions executed between the last block and now, plus the hash from the previous block and a nonce (if that is what the consensus algo. requires. The block is accepted by the network and so we have the first two links in our chain, block 0, no transactions and block 1, with 2 transactions and a unique hash that is based on those transactions and, importantly, the previous blocks hash. And so this continues, every 12 seconds in this case, whether there are transactions or not, a block will be generated.
- We can connect you with a partner to help stand up your POC or full-fledged blockchain application. Our rich ecosystem of partners have already helped these customers stand up a blockchain solution and they can help you too. T: The Microsoft Azure Blockchain portfolio simplifies your blockchain efforts. <CLICK>