P5 - Python frontend interface for Ethereum Layer 2 Blockchain

Adding data to the blockchain with the Clientside callback in Dash. In this tutorial series we'll create the front end interface in Python using Dash. We will use a pre-built smart contract, written in solidity, to create and deploy a decentralized application on top of it. There will be a little bit of javascript used for inserting data into the blockchain, but most of the app will be in Python.

dApp in Python code:
https://github.com/charmingdata/dApp-animal-shelter-python/tree/main

Smart Contract:
https://github.com/charmingdata/all-smart-contracts/blob/main/ShelterDB.sol

Polygonscan zkEVM testnet:
https://testnet-zkevm.polygonscan.com/address/0x1245dBd38a1FF2371436245A9D7eF7AE4A9a1A26

Remix.Ethereum for smart contract development:
https://remix.ethereum.org/

Video layout:
00:00 - Updating data on the blockchain
02:20 - Clientside callback structure
04:35 - CheckNetwork function
05:45 - Intro to updateMyShelter function
08:13 - updateShelter function arguments
11:48 - Signing the transaction
14:19 - Return function output
16:03 - Next tutorial video


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