You must connect your wallet to the GOERLI test net in order to use this example contract. This example contract can be seen here: Smart Contract Link. This example contract has some deliberate security vulnerabilities for educational purposes, such as allowing anyone to become the contract owner, and should never be used for anything other than educational purposes. An Escrow smart contract is a type of blockchain computer programs that allow parties to transact with each other in a secure and transparent manner. These contracts act as intermediaries between the buyer and the seller, holding ether or until both the buyer and seller are satisfied. For this example smart contract which has a fake deed to a house represented by an NFT, anyone can become the seller by clicking on the "Become Contract Owner" button. The owner can then set the minimum amount of Ether a prospective buyer must deposit in order for the contract to be in escrow (Under the "Is A Transaction Currently In Progress" section, if someone deposits the minimum fund amount, this will switch to "yes", and no one else will be able to deposit into this contract unless the sale is either finished or cancelled) Any address that is not the owner can deposit the minimum amount of Ether into the contract and becomes a prospective buyer. The buyer and seller can, at any time and for any reason, click the "Cancel Sale button", which will send the deposited money back to the buyers account. Only the seller can click the "Finish Sale" button, but can only do so after a certain amount of time passes.
Please connect your wallet to the Goerli Test Network by pressing the Connect Wallet button on the top right. If you don't currently have a wallet to connect to, we recommend using MetaMask, which can be found here: https://metamask.io/. After installing MetaMask and clicking the connect wallet button, click the circle at the top right of the MetaMask Menu. After that, click Advanced, and then scroll down until you see Show test netowrks, and click it so that it says ON. Then In the top middle between the fox and the circle, click and scroll unitl you see Goerli test network. Click on it and you should be able to interact with this modified example contract.