http://o54hon2e2vj6c7m3aqqu6uyece65by3vgoxxhlqlsvkmacw6a7m7kiad.onion/en/blog/2019/7/24/cash-still-king
Instead, we create a so-called "numbered account" associated with a random account number. What about payment? Well, when it comes to paying, cash is still king. As you should know well by now, Mullvad’s underlying policy is never to store any activity logs of any kind.