I have code for sending Ethereum with metamask

I am in the testing phase so i am using the ropsten test network to send Eth

the code below gives a receipt

       to: addr,
       value: ethers.utils.parseEther(stringEther)
     });
     
     console.log("tx: ", tx);
     setTxs([tx]);

 console.log("tx: ", tx) basically logs a receipt 

though from this how can I tell if the user has sent my wallet real ethereum and not the fake testing ethereum

so i can log it in my database, as I want to return from the function if the Ethereum was the fake etheruem , and only write to the database if it was real Ethereum

also how can a get an actual receipt in react js when the real ethereum is fully mined and in my account?