If I just use a false name everywhere, there's no problem. What do you exactly mean by 'fiat'? When I don't transfer this money to my bank account and just use the Visa card to order some stuff on Amazon, and let it ship to my address, it's not hard for cops to see the money was used on my Amazon account, under a false name, and shipped to my address, right?

You mean sing up two accounts that use bitcoins, send money one to another, then sell the bitcoins from the account, receive the money on paypal, and withdraw it to my creditcard?

if I send money from an account to another bitcoin address, are the cops able to trace to which account the bitcoins were sent, so they know which account they need to check.
For example, I buy some bitcoins at coinbase with the Visa card, then I send them to the bitcoin address of the other account, are cops able to see the bitcoins are on the other account and they are transferred to paypal?

Yeah they will see this on my creditcard. But I don't really care about that, it's possible I sold something via eBay or so and just withdrawed the money from paypal to my creditcard, it's a prepaid but my name is on it. Assuming cops don't check every creditcard in the world, it's not a problem that some money appeared on a random guy's european creditcard. I just search for a way to get the money to an account, and the cops don't know witch account, so when the money appears on my creditcard they can't know for sure it's the money I just sent from account to account.

Are you saying if I just buy Bitcoins with the Visa, buy stuff online with the bitcoins, they cannot know I bought this with the money on the Visa card?

So this is the point, I have some money on a Visa card in the United States. I live in Europe and I have a creditcard where I want the money transferred to, so I can withdraw the money in an ATM. If I just send the money to my account here with paypal or something like that, cops/feds can just trace the money, and see my name on my european creditcard. I was thinking as a solution, because everyone says bitcoin is untraceable etc., if I make an account on a site on the deep web (or clearnet), wich is capable of sending bitcoins from one account to another, and send it to another account, sell the bitcoins from that account to paypal, and then withdraw it to my creditcard. Is something like that possible? Can cops/feds trace the money back to me? Anyone suggestions of how to make the money untraceable for cops?

thanks