HyperLedger LightningTalk BjoernSimon
- 1. HYPERLEDGER (SMART CONTRACTS ON BLOCKCHAIN) & JAVASCRIPT SEM Lightning Talk; June 11, 2018 Björn Simon @BjrnSmn
- 2. WHY IS THIS IMPORTANT? • “What the internet did for communications, blockchain will do for trusted transactions.” — Ginni Rometty (CEO of IBM) • Potential to disrupt and improve across most industries • Foundational Technology – “The next big thing”… • Impact compared to invention of • Internet & • Open-Source • For me, personally: • Who do you trust with your data? • How can I share securely on a need-to-know-bases and maintain privacy?
- 3. USE CASES? Source: https://youtu.be/gAxK6zYrfxI?t=89 IBM: Building Blockchain Apps With HyperLedger Composer
- 4. USE CASES! Source: https://youtu.be/gAxK6zYrfxI?t=112 IBM: Building Blockchain Apps With HyperLedger Composer
- 5. MORE USE CASES! • Goods tracking • Shipments, food, e.g. track temperature & location via IoT sensors • Fintech • Sharing economies • Energy • Digital identify • Identity, educational certificates/degrees, benefits • Medical records • Prevent human trafficking
- 6. BLOCKCHAIN, BITCOIN, HYPERLEDGER? Peer-2-Peer Crypto HashCrypto Hash Distributed Consensus Blockchain Crypto Currency Smart Contracts Ethereum + Solidity HyperLedger Event Processing • Linux foundation, 2015, >140 members • Focus on Smart Contracts & decentralized enterprise applications • Scalability • Node.js support Bitcoin ACL, Privacy
- 7. WHAT IS BLOCKCHAIN? • Immutable, append only ledger • Cryptographically hashed Source: https://www.thoughtworks.com/insights/blog/blockchain-under-hood
- 8. WHAT IS BLOCKCHAIN? • Trusted, distributed ledger • Peer-2-peer • Consensus Source: https://en.bitcoinwiki.org/wiki/File:Peer-to-peer.png
- 10. EXAMPLE CODE (1) /**.cto: Businesss definition */ namespace org.ex1 asset MyAsset identified by assetId { o String assetId --> MyParticipant owner o String value } participant SampleParticipant identified by participantId { /*…*/ } Source: https://composer-playground.mybluemix.net/editor // Sample Asset: { "$class": "org.ex1.MyAsset", "assetId": "assetId:1", "owner": "resource:org.ex1.MyParticipant#Toby", "value": "original value" } // Sample Participant: { "$class": "org.ex1.MyParticipant", "participantId": "Toby", "firstName": "Tobias", "lastName": "Hunter" }
- 11. EXAMPLE CODE (2) /**.cto: Businesss definition, part 2 */ transaction SampleTransaction { --> MyAsset asset o String newValue } event MyEvent { --> MyAsset asset o String oldValue o String newValue } Source: https://composer-playground.mybluemix.net/editor // Sample Transaction: {"$class": "org.ex1.MyTransaction", "asset": "resource:org.ex1.MyAsset#assetId:1", "newValue": "new value" }
- 12. EXAMPLE CODE (3) /** Transaction processing .js */ async function sampleTransaction(tx) { const oldValue = tx.asset.value; ... const assetRegistry = await getAssetRegistry('org.ex1.MyAsset'); // Update asset in registry await assetRegistry.update(tx.asset); // Emit event for modified asset let event = getFactory().newEvent('org.ex1', ‘MyEvent'); ...; emit(event); } Source: https://composer-playground.mybluemix.net/editor
- 13. HOW TO RUN HYPERLEDGER? • Run in browser: https://composer-playground.mybluemix.net/ • Local Docker: https://hyperledger.github.io/composer/latest/installing/installing- index.html • Cloud • AWS: https://aws.amazon.com/blockchain/ • Azure: https://azure.microsoft.com/en-us/solutions/blockchain/ • IBM: https://www.ibm.com/blockchain/hyperledger • Oracle: https://www.oracle.com/cloud/blockchain/index.html • …
- 14. FURTHER RESOURCES • https://www.computerworld.com/article/3191077/security/what-is- blockchain-the-most-disruptive-tech-in-decades.html • https://medium.com/@madronaventurelabs/building-enterprise- blockchain-applications-in-hyperledger-8d869bb214d9 • https://www.slideshare.net/SimonStone8/hyperledger-composer- architecture • Blockchain visual demo: https://anders.com/blockchain/ • https://www.hyperledger.org/projects/sawtooth & https://github.com/hyperledger • https://www.linkedin.com/pulse/git-blockchain-dave-mercer/ • https://www- 01.ibm.com/events/wwe/grp/grp308.nsf/vLookupPDFs/blockchain%20ar chtage/$file/blockchain%20archtage.pdf
Editor's Notes
- #4: Duplicated records: inefficient, slow What happens if these records differ?
- #5: Shared Ledger: Append only, distributed Privacy: Who can see or update what Smart Contract: Business terms/rules embedded & automatically executed Trust: Events & transactions are verified & endorsed
- #9: Blockchain – foundational technology, like the internet. Many known concepts: Distributed consensus – similar to distributed system consensus Event processing - react to events, execute code stored in Smart contracts Cryptographically signing – like JWT Peer-2-Peer – like Torrent
- #10: Many known concepts: Distributed consensus – similar to distributed system consensus Event processing - react to events, execute code stored in Smart contracts Cryptographically signing – like JWT Peer-2-Peer – like Torrent
- #11: Many known concepts: Distributed consensus – similar to distributed system consensus Event processing - react to events, execute code stored in Smart contracts Cryptographically signing – like JWT Peer-2-Peer – like Torrent
- #12: Shared Ledger: Append only, distributed Privacy: Who can see or update what Smart Contract: Business terms/rules embedded & automatically executed Trust: Events & transactions are verified & endorsed
- #15: Distributed state/database & Function as a Service