Oracle Blockchain Experience Day
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Oracle Blockchain Experience Day
- 1. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Blockchain App Development – Oracle Blockchain Day Juarez Barbosa Junior Principal Developer Advocate, Blockchain Evangelist Oracle EMEA juarez.barbosa@oracle.com https://www.linkedin.com/in/jujunior @juarezjunior May 2019
- 2. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.
- 3. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Agenda Blockchain Technology Hyperledger Fabric Blockchain App Development Oracle Blockchain Platform 1 2 3 4
- 5. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. 5 The Promise of Blockchain "The technology most likely to change the next decade of business is not the Social, Big Data, the Cloud, Robotics, or even AI. It is the Blockchain!“ —Harvard Business Review "The Impact of Blockchain Goes Beyond Financial Services," May 2016
- 6. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. 6 The Promise of Blockchain "We are in the process of developing a New Operating System (OS) for the planet.” — Jeremy Wilson Vice Chairman of Corporate Banking Barclay’s Bank Blockchain for Finance conference, October 2017
- 7. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Eliminating intermediaries means reduced transaction costs and near real-time transaction execution Increased confidence in the information and reduced fraud opportunities Increased auditability and trust Automated business processes in a trusted way. Represent any asset digitally Eliminates manual efforts and delays due to reconciliation needs since data consistency is a key attribute of the distributed ledger Blockchain Technology Disruptive Characteristics / Benefits Decentralized, peer-to-peer network No central, controlling authority Distributed Ledger All participants maintain a copy of the ledger Immutable transaction history Impossible to make changes to existing transactions in a blockchain without detection Transparent Transactions on a blockchain are visible to the authorized participants Smart Contracts Business logic deployed on a blockchain and shared and validated by participants
- 8. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Two Key Types of Blockchain PermissionedPermissionless • Anyone can join the network and have a copy of the ledger • This involves computer resource intensive processes to protect the Blockchain incl. mining • Additional mechanisms to protect network from overload if smart contracts used • Typically B-2-C, C-2-C (eg. Bitcoin, Ethereum) • Closed ecosystem: members are invitation-only • Less intrinsic protection needed, thus greater scalability (protection through firewalls, identity management, defined smart contracts) • Typically B-2-B (eg. Hyperledger/Oracle)
- 10. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | What is Hyperledger Fabric? • Fabric – open-source platform for distributed ledger solutions that is intended as a foundation for developing blockchain solutions – Provides a permissioned blockchain model with membership services – Designed with modular architecture allowing components, such as consensus and membership services, to be pluggable – Programmable – leverages containers to host smart contracts for automating business processes – Focuses on a scalable implementation by separating smart contract execution from block creation – Provides private channels for conducting confidential/private transactions with invited members – Open-governed community for enterprise blockchain hosted by The Linux Foundation – No cryptocurrency required! Permissioned, Open-Source, Enterprise, B2B
- 11. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Ledger X • Collaborative network of organizations using a common blockchain – Oracle cloud or heterogeneous nodes • Create a new network or add to an existing network • Ensure privacy by creating channels with distinct policies and data access spanning multiple orgs OBP Interactions – Creating Business Network BCS A BCS B BCS C Org A Org B Org C P P P P P P P P P P P Consortium: X (A+B+C); Channel: CH1 Consortium: Y (A+C+D); Channel: CH2 P PLedger Y O O O O O O HLF D Org D P P P Oracle Public Cloud On Premises
- 12. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Hyperledger Fabric - Transaction Flow Client Application Fabric SDK Keys Membership Service Peers Endorser Simulates TX World State Committer Applies 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 Customer 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)
- 14. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | 14 Blockchain Technologies Blockchain Technologies - Hyperledger
- 15. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. Smart contract developers who create chaincode • Deploy through console or through SDK • Test through Web Services/REST APIs • SQL-based rich queries for world state with full validation on commit Application developers will develop/integrate end-user apps, which execute transactions via smart-contracts • Client SDK (Java, Node.js, Go, Python) • Server SDK (Chaincode – Java, Go, Node.js) • Web Services/REST APIs • Rich queries on history DB • Business-user friendly smart contracts leveraging rules engine technology for human-readable smart contracts • API-driven common application layers • Issuing and tracking tokens and other assets • Tracking documents and collaboration surrounding them • Automated deployment or upgrades of smart contracts leveraging DevOps integration of CI/CD tooling Smart Contract and Application Development 15 Client SDK Keys Application Developers Smart Contract Developer REST Proxy (HLF SDK) BCS Console Blockchain Network REST Dev mode Unit testing with mock ledger
- 17. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | OBP - Comprehensive Blockchain Platform 17 Membership Service Membership Service Applications Validating Nodes/ Peers Distributed Ledger (Single Version of Truth) Smart Contracts (aka Chaincode) Ordering Service Ordering Service REST Proxy Operations Admin/Operations Console Integrated backplane of supporting services Oracle value-add Rich integration tools for SORs & new apps App App SDK REST proxy REST Flexible, global, interoperable deployments Autonomous, Oracle-managed PaaS SQL-based rich queries over K-V ledger P P P Pre-assembled Dependencies
- 18. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. Learn More http://oracle.com/blockchain http://cloud.oracle.com/blockchain http://developer.oracle.com/blockchainNext Steps https://www.f6s.com/oraclescaleup https://cloud.oracle.com/en_US/tryit
- 19. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | 19