balakhonoff / defi_forecast

The dApp allows users to forecast a bitcoin price and bet by eth. The reward for users which has a error < 1% will be proportional to their bids.

defi_forecast

The dApp allows users to forecast a bitcoin price and bet by eth. The reward for users which has a error < 1% will be proportional to their bids.

Click this link to watch the demo video on YouTube

Development of template for a dApp

Install dependencies

npm install

Compile

truffle compile

Deploy contract

truffle migrate --reset

Deploy contract to specific net

truffle migrate --reset --network {mainnet,rinkeby,mumbai} 

Launch truffle console

truffle console

Run a script example

truffle exec scripts/issue-tokens.js

Run tests

truffle test 

Install web dependencies

npm install
npm i dotenv
npm install @truffle/hdwallet-provider

Run web application

npm run start

Setting .env parameters

Create .env file in the project folder and fill the addresses you will use:

PRIVATE_KEY_0="..."
PRIVATE_KEY_1="..."
SECRET_KEY="..."
RINKEBY_SERVER="..."
ETHER_MAINNET_SERVER="..."
MUMBAI_SERVER="..."

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Project folders

migrations - deployment scripts

scripts - scripts to launch smart contract functionality

contracts - smart contract sources

src/abi - ABIs of smart contracts

src/components - js/css sources of the frontend solution

test - js tests of smart contract logic

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Usage

1. Open a page created by the command npm run start - localhost:3000
2. Switch to the wallet account[0] and click "Next Step" and confirm transaction in MetaMask to change the status to "The forecast cycle is started".
3. Refresh the webpage and switch to account[1].
4. Insert a value in the field "Bid Value (ETH)" to set a bid.
5. Insert a value in the field "Forecast BTC Price" to set a prediction.
6. Click "Bid!" button and approve the transaction.
7. Repeat the procedure of bidding with several accounts.
8. Then switch to the first account and click "Next Step"
9. Approve the transaction to stop the forecast cycle.
10. Click "Next Step" one more time to start the reward process
11. Then you can switch between accounts to see the "Claim Reward!" button for some of them which had an accurate prediction (<1% error)
12. After claiming rewards the owner can reset the forecast cycle with the button "Next Step"