So, Bitcoin can be described today as the best-reputed currency, and its blockchain plays a key role in crypto market functioning. A hardware wallet has a form of micro memory device, serving to store your currency. The key specificity of such a wallet compared to a software one is that you should take special care of synchronizing your wallet with the blockchain to keep your balanced updated. Disclaimer: Buy Bitcoin Worldwide is not offering, promoting, or encouraging the purchase, sale, or trade of any security or commodity. Changelly is a Bitcoin and altcoin exchange. Once a person accepts your offer, he will send you BTC after you send fiat currency. So, in this case, the first step is choosing the exchange that will meet your expectations.