/blockchain-developer-bootcamp-final-project

Primary LanguageJavaScript

blockchain-developer-bootcamp-final-project

Deployed version url:

https://frosty-lovelace-f800b7.netlify.app/

Hodler Service

Goal: One day this contract will make someone a crypto millionaires in the long run....

Problem

Crypto market is volatile with high intensity of fear vs greed. I think it is hard sometime to be a real Hodler - Hold on for deal life when there is a big crashes in the market, however those day are likely to provide the highest gain if you buy the dip.

Solution

A smart contract service to help discipline and force you to be a hodler!. the contract will be connected to an existing dex but with hodling oriented features:

  • User could deposit ETH but could not withdraw before a specific set of time
  • User could used the deposited eth to buy target token and it is also timelocked
  • In the future, this could be update to use price oracle to force user to buy at dip or sell at the pump

Example workflow

  1. User could deposit eth to a contract but might not able to withdraw out within a specific period using timelock feature.
  2. User could only use the deposit eth to buy a specific token only from UniswapV3 dex
  3. Both ETH, and specific token could only be withdrawn after specify timelockperiod

Future: The contract could may be call to check daily gains (red or green candles) move price check to frontend instead, criteria check within buy seem costly

Environment variables (Required Moralis API to locally fork TESTNET)

API for archival node fork from Moralis

MORALIS_API=
MNEMONIC=

frontend/.env config chainid=42 for kovan testnet

REACT_APP_CHAINID=42

How to run this project locally:

Prerequisites

  • Node.js >= v14
  • Hardhat (plugin: hardhat-deploy, hardhat-etherscan)
  • npm
  • Moralis API in .env to locally fork kovan testnet =>Moralis
  • git checkout main

Contract

  • Run npm install in project root to install all dependency
  • Update moralis api in the .env with API key
  • Run testnet forking with npm run node (Forking the DEX with liquidity)
  • To compile run npm run compile
  • Run test with npm run test
  • Run local deployment with npm run deploy-contract
  • Development network id is 31337 change it in metamask

Frontend

  • cd frontend
  • npm install
  • npm start
  • Open http:/localhost:3000
  • metamask might show error, fix: Metamask>setting>advance>reset account

Directory Structure

  • frontend: Project React app frontend
  • contracts: Smart contract that are deployed on Kovan test net
  • deploy: deployment scripts for hardhat-deploy plugin
  • task: A script to aid during development
  • test: Tests for smartcontracts

Mocking Environment

To test the Dex , i have deployed a mocked token on Kovan with step below

  • MockToken was deployed on kovan with npx hardhat deploy --tags token --network kovan
  • Token address 0xf09F34Ade2D66EA69372C828454873bFa9c04556
  • Token was verified with command:npx hardhat verify --network kovan 0xf09F34Ade2D66EA69372C828454873bFa9c04556
  • Manually minted: 1,000,000 tokens
  • Pool created with 0.48 ETH: 1,000,000 tokens

Screencast link

https://www.loom.com/share/d4217be422d0475786c37eea31e2ed2e

Public Ethereum wallet for certification:

0x6D9469aD7BdFc6BFb0638b8DD31D4C814726Ed43

More idea

  • Price reading data in the future.
  • Auto Dollar-Cost Averaging , keep buying weekly or monthly or at dip
  • Dead man switch or Beneficiary protocol, so your hodling stash could transfer ownership in longterm.
  • May be a customizable input for different tokens or scenario like, 1 year hodling etc.
  • Chaotic ape trading - Buy random token just for fun!

Resouces