Challenge #5 📺 A State Channel Application

6. 📺 A State Channel Application

Web3

1. Roadmap:

Basic -> Variables, Arrays, Functions 

Advanced -> Mapping, Structs, Modifiers, Loops, interfaces



2. Build 1st smart contract

web3 -

101 Fundamental - Roadmap (ep1. - ep.3)

1. Child Contract

// SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

import {SimpleStorage} from "./SimpleStorage.sol";

contract AddFiveStorag

302 Inheritance


a


[Reference] 

Simple NFT Example

How to build an NFT minter app - Mint NFTs easily

How to build an NFT digital artwork shop

1. [thirdweb] web3 frontends and interaction

[thirdweb] ERC6551 + ERC4337

NFT 101. ERC721 Scratch

2. 實況主捐款合約 (ep.16)

3. 🏵 Token Vendor 🤖

1. Modify / Edit mint windows



2. Set allowlist mapping to save allowlist addresses

only hardcore people, certain people can mint this NFT

create 

204 ERC721 -  Edit Mint Windows, Allowlist Mapping 

NFT 102. BattleCats

301. 發代幣 - ERC20 (ep.17)

1. Add max supply

Add limit of supply

2. Allowlist mint

public mint - open for everybody - 0.01 ether

allowlist mint  - for limited member - 0.001

203 ERC721 -Max Supply, Allowlist Mint, Mint Window 

1. ChatGPT

在Web3領域中，SDK指的是軟體開發工具包（Software Development Kit）。這些SDK通常是為了幫助開發者在構建和整合與Web3技術相關的應用程序時提供便利。Web3是指基於區塊鏈和分佈式技術構建的下一代互聯網，因此，Web3 SDK主要用於開發區塊鏈應

a way of storing social media(social graph) data on the blockchain

1. Take twitter, Facebook  as example

twitter Inc.

twitter application

twitter 

101 Lens protocol - Definition

4. API key

3:10 Deploy an ERC-1155 NFT smart contract with thirdweb 

04:45 Create and setup a new project with thirdweb CLI 

08:30 Configure and setup embedded

3. Create a NFT GeolocationApp

02:25 Deploy an NFT smart contract for required NFT 

06:05 Create and setup a new project with thirdweb 

08:45 Setup thirdweb Auth in project 

17:5

2. Build a token gated web3 app

0. Todo List 

Create a Twitter Contract (ep.7)

Creat a mapping between user and tweet

Add function to creat a tweet and save it in mapping

Create 

109 Twitter Contract

decentralize protocol

CID link

1. Create NFT Metadata for NFT image

decentralize storage

upload  the image "folder" to pinata which include the PN

207 ERC-721 IPFS x Metadata upload

1. 名稱 function name() external view returns (string memory)

回傳本合約的名字

2. 查詢NFT的URI function tokenURI(uint256 tokenId)  external view returns (string 

407. 元資料 - ERC721 (ep.28)

1. 鑄造新代幣 function mint(address to, uint256 tokeId)

鑄造, 即無中生有

只有合約擁有者或這特殊權限的人才能呼叫

同時也是一種轉帳, 由address 0X0轉到目標帳號(to)

由於是轉帳, 因此也要觸發Transfer事件

限制

不能鑄

406. 鑄造, 銷毀 - ERC721 (ep.28)

1. 安全轉移 tokenId的NFT給第三方位址 function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data)

​呼叫者msg.sender 試圖將持有者from名下, 編號為t

405. 安全轉移 - ERC721 (ep.27)

1. 轉移NFT安全版本 function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

呼叫者msg.sender試圖將持有者from名下, 編號為tokenI

sol. Projects

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