"Family budget" in minutes with Chainstack

- Today’s showcase: “Family budget”
- Live! Create the infrastructure in minutes
- The smart contract and use case
- Live! Deploy a contract and make transactions
- Q&A

Transcript

1. Proprietary and Confidential © 2019 hayorov chainstack.com !1 Blockchain project in minutes 
 with Chainstack Alex Khaerov Development Lead alex.khaerov@chainstack.com
2. !2 Agenda • Today’s showcase: “Family budget” • Live! Create the infrastructure in minutes • The smart contract and use case • Live! Deploy a contract and make transactions • Q&A
3. Proprietary and Confidential © 2019 hayorov chainstack.com !3 Quorum blockchain (ethereum-based) Jupyter notebook with web3py
4. Proprietary and Confidential © 2019 hayorov chainstack.com !4 Today’s showcase “Family budget”
5. Proprietary and Confidential © 2019 !5 Family budget Total balance - 200$ - 10$ - 15$ -100$ - 50$ - 100$ 1000$ - 10$ - 15$ 900$ 890$ 875$ 675$ 575$ 560$ 510$ 500$
6. Proprietary and Confidential © 2019 !6 Family budget NaN$ 1000$ define the balance X X Total balance
7. Proprietary and Confidential © 2019 My Family The blockchain infrastructure Create a project The balance tracker Dad Mom Girl Boy </> Contract Deploy a network with 4 nodes Write some smart contract
8. Proprietary and Confidential © 2019 hayorov chainstack.com !8 Live! Create the infrastructure in minutes
9. Proprietary and Confidential © 2019 !9
10. Proprietary and Confidential © 2019 hayorov chainstack.com !10 The smart contract
11. Proprietary and Confidential © 2019 peek the balance init the program the program name define the balance & record spendings
12. Proprietary and Confidential © 2019 hayorov chainstack.com !12 The use case
13. Proprietary and Confidential © 2019 !13 Dad deploys the contract Mom Addr: 0x4…d1 Mom defines the balance Dad Addr: 0x3…d3 simpleStorage.constructor(0x4…d1) simpleStorage.makeRecord(1000)
14. Proprietary and Confidential © 2019 !14 records spendings Boy Addr: 0x4…22 Dad Addr: 0x3…d3 Mom Addr: 0x4…d1 Girl Addr: 0x5…99 simpleStorage.makeRecord(-15) simpleStorage.getBalance() gets the balance
15. Proprietary and Confidential © 2019 hayorov chainstack.com !15 Live! Deploy a contract and make transactions
16. Proprietary and Confidential © 2019 !16
17. Proprietary and Confidential © 2019 !17 bit.ly/cs14free Try Chainstack with free 14 days Alex Khaerov Development Lead alex.khaerov@chainstack.com and subscribe for updates at bit.ly/cs-updates