All Bitcoin transactions are tracked on a public ledger known as the blockchain , and people working as miners verify transactions and update the blockchain. It is strongly advised against to use any exchange wallets as they are very vulnerable to exchange hacks. Hi Siga, Thank you for your inquiry. There are hundreds of platforms to choose from, and they can be separated into three main categories: Bitcoin brokers Brokers offer the quickest and easiest way to buy Bitcoin, allowing you to pay for your digital coins using fiat currency like AUD or USD. As per checking you are already in the correct page. You can use the service to buy bitcoin via cash deposit for 4. It is the legal substance of your offer not what it is called that matters.