Autonomous Lottery Dapp – 自主彩票区块链毕设代写

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Autonomous Lottery Dapp

Autonomous lottery with a new round starting every 10th block. Winners are determined by hashing player addresses and need not be stored in contract state. This can be manipulated by miners so the project is not ready for mainnet yet.

Rinkeby testnet deploy: https://autonomous-lottery-dapp.vercel.app

Hardhat

Hardhat Network is used to run and debug Solidity locally, along with Typechain to provide TypeScript bindings for Ethereum smart contracts.

Solidity

Patterns applied:

  • Checks Effects Interactions
  • Pull over Push
  • Guard Check

Ethers.js

Ethers library is used to interact with the blockchain.

Waffle

External & public contract functions are covered by Waffle tests.

Next.js

Next.js hits Infura on SSR to render the latest lottery info (rounds, players, payouts, winners) for browsers with no Ethereum provider like Metamask installed. Metamask is only required to interact with the lottery.

React

Frontend uses context provider with React Hooks pattern for global store, initialized (hydrated) from SSR, and then updated on contract events.

Styling

Tailwind is used for layout, and Ant Design for UI components.

TypeScript

All code across Next.js, React, Hardhat scripts and tests is statically typed with TypeScript.

Local dev

  1. npm i
  2. npm run node starts Hardhat Network
  3. npm run deploy deploys the Lottery contract & makes some transactions for testing
  4. npm run dev starts Next.js
  5. Install Metamask

自动彩票Dapp

自动彩票,每10个街区开始新一轮。赢家由散列玩家地址决定,不需要存储在合同状态。这可以由矿工操纵,因此该项目尚未准备好用于mainnet

Rinkeby testnet部署:https://autonomous-lottery-dapp.vercel.app

安全帽

Hardhat Network is used to run and debug Solidity locally, along with Typechain to provide TypeScript bindings for Ethereum smart contracts.

坚固性

Hardhat Network用于本地运行和调试Solidity,以及Typechain,为以太坊eth智能合约提供TypeScript绑定

  • 检查效果交互节点启动Hardhat Network
  • npm运行部署部署彩票合同;执行一些事务以测试npm运行dev starts Next.js安装Metamask
  • Guard Check

Ethers.js

以太库用于与区块链blockchain交互

下一步.js

外部和外部;华夫格测试涵盖了公共合同功能

Next.js

Next.js在SSR上点击Infura,为未安装像Metamask这样的以太坊eth提供商的浏览器呈现最新的彩票信息(轮次、玩家、奖金、中奖者)。Metamask仅在与彩票交互时才需要

React

前端使用上下文提供程序和全局存储的React Hooks模式,从SSR初始化(水合),然后根据合同事件进行更新

Styling

Tailwind用于布局,Ant用于UI组件的设计

TypeScript

Next.js、React、Hardhat脚本和测试中的所有代码都是用TypeScript静态键入的

Local dev

  1. npm i
  2. npm run node starts Hardhat Network
  3. npm run deploy deploys the Lottery contract & makes some transactions for testing
  4. npm run dev starts Next.js
  5. Install Metamask

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