So first off, I was asked a phone number for a verification code and then, I had to scan my Bitcoin address QR code. I then inserted 100$ of liquid money into the machine and recieved a notification on my phone telling me that the transaction went through successfully.
Wow, it looks very easy and comfortable. 
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But I am curious why they still need a phone number verification? What is the use of it?
As we all know Bitcoin is decentralized, anyone can send Bitcoin to our address without any requirements?
Yh, this peaked my curiosity too? In theory all you need is a Bitcoin wallet address which I presume you can scan the QR code for (if this even exists) or scan it in somehow, but why use a phone number?As we all know Bitcoin is decentralized, anyone can send Bitcoin to our address without any requirements?
I also wonder what are the exchange rates used
