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CCI2017 - Crowdfunding with Azure Blockchain - Stefano Tempesta
- 1. CLOUD CONFERENCE ITALIA 2017 Crowdfunding with Azure Blockchain Stefano Tempesta
- 2. e #cloudconferenceitalia ABOUT ME Stefano Tempesta CRMUG Switzerland Chapter Leader /in/stefanotempesta @stefanotempesta
- 3. e #cloudconferenceitalia • Blockchain: Why What How • BaaS: Blockchain as a Service in Azure • Build a Crowdfunding Solution • Digital Ledger • Smart Contracts • Ethereum AGENDA
- 4. e #cloudconferenceitalia Data structure used to create a • Cryptographically Secure • Shared • Distributed / Decentralized • Transactional • Digital Ledger Blockchain
- 9. e #cloudconferenceitalia • Decentralized Computing Platform • Execute Code in a Blockchain Smart Contract • No Central Point of Attack • Spend “Ether” to run • Computational power is limited Ether’s value is subject to supply-and-demand Ethereum
- 10. e #cloudconferenceitalia Azure Blockchain as a Service •Choice of Ledger •Cloud Integration •Ethereum Studio • GUI • Ethereum Sandbox • Unit Testing • One Click Deploy
- 11. e #cloudconferenceitalia • Runs on Ubuntu Linux • Can provision on Azure • https://live.ether.camp App ethereum.json contracts/*.sol Ethereum Studio
- 13. e #cloudconferenceitalia Azure Blockchain as a Service
- 15. e #cloudconferenceitalia What’s Next Project "Bletchley“ https://github.com/Azure/azure-blockchain-projects Coco Framework https://github.com/Azure/coco-framework
- 16. e #cloudconferenceitalia Blockchain “1.0” = Transaction Blocks Property Value Hash 0x974f963ee4571e86e5f9bc3b493e453db9 c15e5bd19829a4ef9a790de0da0015
- 17. e #cloudconferenceitalia Blockchain “2.0” = Transaction Blocks + Contract Property Value Hash 0x974f963ee4571e86e5f9bc3b493e453db9 c15e5bd19829a4ef9a790de0da0015 Contract Crowdfunding.getFoundId
- 18. e #cloudconferenceitalia Project "Bletchley" Property Value Hash 0x974f963ee4571e86e5f9bc3b493e453db9 c15e5bd19829a4ef9a790de0da0015 Contract Crowdfunding.getFoundId Cryptlet Cryptlets • Off-chain code components • Execute within a secure, trusted container • Communicate using secure channels
- 19. e #cloudconferenceitalia Coco Framework • Open-source system • High-scale, confidential Blockchain network • Designed for confidential Consortiums • Throughput and latency approaching database speeds • Available mid 2018
Editor's Notes
- 1
- WHAT IS ETHEREUM? We asked earlier what other applications could be built with blockchain technology. Recall that Bitcoin is, effectively, a decentralized application for payments. Ethereum adds another layer by allowing users to put code on its blockchain that executes automatically. This code is called a “smart contract.” In this way, Ethereum hopes to create a decentralized computing platform — a global supercomputer. WHY IS ETHEREUM WORTH MORE THAN $300? Ethereum’s blockchain allows for the creation of a decentralized supercomputer. This supercomputer is the first one of its kind. Computational power is limited, and developers pay with ether to use the Ethereum blockchain. Ether’s dollar value is subject to the supply-and-demand mechanics found in any marketplace. If investors find the Ethereum blockchain valuable — and developers are building decentralized applications — then demand for ether might rise and its price could rise. The opposite could also happen.
- Ethereum Sandbox – Complete and identical emulation of the live network. During the development the work with the sandbox gives the flexibility required for development before deploying the smart contracts to the live network. UI for Ethereum based system – Ethereum Sandbox is available for developers to run applications and provide a UI for interacting with smart contracts all in one integrated environment. Unit testing – Comprehensive environment, to test your smart contracts over and over again. One Click Deploy – Once the development of the Ethereum smart contract project is ready, deployment to the live network is very easy. It can be done in only one click and the smart contracts can be seen on the target deployment.
- Cryptlets are the principal building blocks for introducing a secure blockchain middleware tier into the architecture. Given the distributed nature of blockchain, this middleware naturally functions as a service in the cloud (Azure/Azure Stack, AWS, Google, Private) and is more accurately called an Application Fabric. In what is referred to as blockchain 1.0 & 2.0, if external data or events based on time or market conditions needs to interact with the blockchain, an “oracle” is required. There is no standard way to supply “oracle” data securely, which can quickly become an issue in multi-party SmartContracts. Calling code or data outside a SmartContract or blockchain in general is breaking the trust barrier threatening the authenticity of the dependent transactions. Cryptlets supply this functionality. Cryptlets are off-chain code components that are written in any language, execute within a secure, trusted container and communicated with using secure channels. Cryptlets can be used in SmartContracts and UTXO systems when additional functionality or information is needed and provided via a “CryptoDelegate” or adapter.