Anybody can join the blockchain, and when they do, they get the same copy of the blockchain everyone else sees.

The final step is verifying the blockchain hasn't been tampered with. Can you order the steps below, so they make sense? 

Great! This openness and safety are some of the main attractions of the blockchain. 

First, we'll need to join the blockchain. Then, get a copy of the chain. Finally, we can verify if the chain is correct.