Your description is ok, but I would add information about the mining because the network works due to the miners. Also, thus it is partially explained the decentralized character of cryptocurrencies because miners are located across the globe. I understand that not all cryptocurrencies are mined, but since you wrote about bitcoin, I think there is a reason to mention it. You called blockchain a core component and one of the advantages of bitcoin and didn’t explain what it is. It seems confusing for people who get acquainted with cryptocurrency for the first time.