Staking DAPP Using dAPIs

dAPP to stake Mock Wrapped ETH or any ERC20 token to earn DAPP Tokens of the same equivalent staked value in USD using API3's dAPIs on Polygon Mumbai Testnet.

Installation

• Install dependencies

yarn

• Enter credentials

cp credentials.example.json credentials.json

# ..and populate credentials.json with your mnemonic

Deploy the Contracts and set dAPIs

• Compile the contracts

yarn compile

• To deploy and set all the dAPI and Contract addresses

yarn deploy

• Head on to API3 Market and get access to the dAPIs so that the dAPP can access them. They are free to use on Mumbai Testnet. Just head on to it, enter your Staking contract's address, click on request access and approve the transactions.
  • For ETH/USD on Polygon Mumbai - ETH/USD dAPI
  • For USDC/USD on Polygon Mumbai - USDC/USD dAPI

Using the dAPP

• Import the DappToken contract address in your account's Metamask and send all the DAPP to the Staking Contract. The Staking contract will control all the DAPP Tokens

• Also import the Wrapped ETH contract address in your account's Metamask. WETH will be used to stake and earn DAPP Tokens. Don't send this directly to the staking contract.

Staking WETH

• To stake WETH

yarn stake

• To issue and send DAPP rewards back to the Staker

yarn issue

Unstaking WETH

• To unstake and get back your WETH

yarn unstake

• As any user can stake/unstake WETH, you can try running yarn stake and yarn unstake with a different mnemonic with enough gas to make the trasnactions.

• Only the owner (the address that deployed the contract) can issue the rewards - run yarn stake command.