Bitcoin is a cryptocurrency, that is created, distributed, and kept through blockchain - decentralized ledger. One of the main advantages of BTC (Bitcoin) is the low rates when sending a payment. Which makes it quite obvious why cryptocurrencies will inevitably firmly entrench in the economy. Why would you pay 3% for a transfer or 40$ for a wire transfer and wait for 3-5 days, if you can pay with a fee of 0.58% (for example) and it will take up to 10-15 minutes to receive it. Or why should you depend on your bank who stores your money, uses it, and then dictate to you how much and when you can spend or send it or even close your account for any reason.