Alchemy Week 4 Assignment

Here we have to make sure that tx.origin must not be be equal to to msg.sender.

Original contract -> Alchemy University official contract.

tx.origin -> The address which originally started/initiated transaction.

mas.sender -> The address which is making/executing the transaction.

Approach

In above approach I have created same Contract file of original contract, so that we can take/create an instance of the contract by it's address.

Then we have a callAttempt function which calls the attempt method of Original contract.

When we deploy the contract in deploy.js, contract will be deployed in goerli testnet (refer hardhat.config.js).

So when we call callAttempt function in win.js, the contract Winner (win.sol) tx.origin will be the contract because it is calling the function & msg.sender will be the address who is calling the function.

So require(msg.sender != tx.origin, "msg.sender is equal to tx.origin"); passes 👍.

Commands for Running

1. npx hardhat run scripts/deploy.js --network goerli for deploying the contract.

2. npx hardhat run scripts/win.js --network goerli for calling the function callAttempt

Thankyou