Blockchain @ Azure

Blockchains have been widely talked about for several weeks and months now. Depending on whom you ask, Blockchains could disrupt the financial world, insurance market or supply chain management. Microsoft Azure also supports executing blockchains—via third-party solutions such as BlockApps or Azure’s own Blockchain Service: With a few clicks, you can provision complex blockchain networks. Manuel shows you how Azure’s blockchain-as-a-service offer feels and what you can do with it.

Link to more detailed slides (in German): https://speakerdeck.com/manuelrauber/blockchain-fur-entwickler-was-steckt-wirklich-dahinter-1

Transcript

1. Blockchain @ Azure Manuel Rauber @manuelrauber Consultant
2. Consultant @ Thinktecture AG ! manuel.rauber@thinktecture.com " @manuelrauber # https://manuel-rauber.com Microsoft MVP The guy who’s talkin’ Manuel Rauber
3. Blockchain Intro Public vs. private Blockchains Ethereum, Solidity, Smart Contracts Azure App Builder Demo Agenda
5. Not today.
6. • Transparent processes for businesses and customers • Tracking of digital and physical goods like branded products or medication • Including IoT data: position of container, … • Audit/revision security • … without a central regulation/server New Use Cases
7. Disclaimer This is a very basic introduction to have a common understanding for the rest of the talk The published slide deck will contain additional information Blockchain Intro
8. Blockchain Intro Node 1 Node 2 Node 3 Node 4 Node 5 Node 6 Node 7 Node 8 Node 9
9. Node 1 Peer-to-Peer replication Genesis Block Block 1 Block 2 Block 3 Node 2 Genesis Block Block 1 Block 2 Block 3 Node n Genesis Block Block 1 Block 2 Block 3 Block 4 Block 4 Block 4 Block 5 Block 5 Block 5
10. Genesis Block Config Random Content Genesis Hash Block 1 Genesis Hash Content Block 1 Hash Block 2 Block 1 Hash Content Block 2 Hash Block 3 Block 2 Hash Content Block 3 Hash The chain of blocks
11. Transaction = Statement, which is technically neither changeable nor deletable Transactions I, Manuel Rauber, offer John Doe to buy my MacBook Pro for 1000,00 EUR Signed by: M. Rauber I, John Doe, accept Manuel Rauber‘s offer to buy his MacBook Pro for 1000,00 EUR Signed by: J. Doe
12. Transactions have an explicit ordering within a block Transactions Block 1 Tx #1 Tx #2 Tx #3 Block 2 Tx #4 Tx #5 Block 3 Tx #6 Tx #7 Tx #8 Block 4 Tx #9 Block 5 Tx #10 ...
13. • Public Blockchains: Proof of Work • Proof of Work: Solve a cryptographically puzzle by investing computational power (e.g. energy) • e.g. Bitcoin: Try to find a hash for a block with a specific amount of leading zeros • Bitcoin needs 61 TWh of energy • Berlin in 2014 needed ~64 TWh of energy • Also called: Mining How is a block created?
14. Do you really want Proof of Work for a B2B Blockchain? NO
15. Two different models Public blockchains Ethereum, Bitcoin, ... Private Blockchains Firm E Firm C Firm A Firm F Firm G Firm B Firm D Regulator Firm X Consortiums, Governments, ... ? ! Firm X
16. • Open-source, public, distributed computing platform • BC started ~ 2,5 years ago, ~5.5M blocks • Cryptocurrency: Ether • Different clients, e.g. Geth (golang) or Parity (Rust) • Features a turing-complete virtual machine for Smart Contract execution Ethereum
17. • Define rules which define the validity of transactions • Read and write the “world state” • Actual state of all data within the Blockchain • Can be built by the Blocks (used as a transaction log) Smart Contracts (SC)
18. • Smart Contracts are part of the Blockchain • Will be deployed via a transaction • Written in Solidity • Possibility to deactivate/self-destruct a deployed SC • Remix: IDE for writing and debugging Smart Contracts written in Solidity • Future: Execution of Ethereum flavored WebAssembly (eWASM) Smart Contracts in Ethereum
19. • Current state: private, confidential, PoC • Microsoft’s approach to ease the usage of permissioned (private) Blockchains • Toolings for business people and developers • Ethereum as base blockchain technology • Hyperledger Fabric is planned as an alternative • Uses Proof of Work Mining è will be changed in the future Azure Blockchain App Builder
20. • Integrates deeply into other Azure Services • App Services for Dashboards, Admin & Smart Contract UI • Active Directory for Group, User and Permission handling • SQL Database for additional data mapping • e.g. user <-> Smart Contract Permission mapping • VM Scale Sets to easily extend to multiple nodes Azure Blockchain App Builder
21. • Possibility to extends the chain Off-Azure • Requires understanding of Ethereum • Manual process, no clicky clicky UI or CLI tools • Additional Azure Services like Azure VPN are needed • Alternatives: IBM Blockchain Service, SAP Leonardo Azure Blockchain App Builder
22. Demo Time
23. • Observe – Ignore the hype • Try it! – With or without Azure, it’s not magic • Prepare – Think of new Use Cases • Slides: https://speakerdeck.com/manuelrauber • Contact: @manuelrauber, manuel.rauber@thinktecture.com And… now?