@J123fe What is a thix number?
Hi,
First of all: Bitcoin transactions are not yet under surveillance like bank transfers or credit card payments are. If you plan on buying something that could be considered as being a grey-area, Mixers still make sense.
Every single Bitcoin transaction is stored in the so-called Blockchain. This Blockchain is public, some websites even offer Blockchain explorers that indicate which wallet (a wallet is like a bank account that stores cryptocoins instead of casual money) sent which amount on which time to which other wallet. Now of course, they do not know your name, but in case of a police investigation your could tracked down and they would e.g. prove that you sent Bitcoins to a drug dealer. This is simply because you need to upload funds to your wallet, using a credit card, or PayPal, or whatever else - and these payments cannot be done anonymously, your credit card is registered with your name etc.
This is where Bitcoin Mixer / Tumbler become interesting: A Bitcoin Mixer will delete any traces of your payment. You send the coins to a Mixer, and indicate the wallet you want the money to be sent to. But instead of directly forwarding your coins, Mixer use various ways to to outsmart the Blockchain: The mixer keeps your coins and uses its own coins and wallets to forward the money. Also, the coins will be converted into different Cryptocurrencies, so that the Blockchain cannot track the path the coins take. This takes between an hour and a full day, but in the end, your coins are clean and no one could prove that you sent money to a certain address.
This list might not be up to date, but provides an overview of reliable Bitcoin Mixers like smartmixer.io:
https://cryptalker.com/best-bitcoin-tumbler/
In the TOR net, some activists also provide Bitcoin mixers, but I am not sure if I may link to them or would break the forum rules.
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Personally, I use a European Bitcoin exchange, because unlike with US companies, in Europe privacy is taken seriously. I registered with my Bitcoin service providing them a copy of my passport and other documents, just like with a regular bank, and I trust them, actually, I think all in this list are good to go, although AnyCoinDirect might be the most popular one:
http://verenigdebitcoinbedrijvennederland.org/leden/
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If you don't want to provide your ID and otherdocuments, you could register with e.g.
https://localbitcoins.com/ from Finland. All they want is a valid email-address and a phone number to send you an SMS with an activation code. They allow Bitcoin transfers up to 1,000 Euros per year. If you want to spend more, they will ask for your ID like everyone else does, as explained here:
https://localbitcoins.net/blog/id-verification-update. They accept payments in cash, credit cards, PayPal, bank transfers and many more ways for uploading your funds / for buying coins. The only downside is that they act like a peer to peer market place rather than like a regular bank, that feels a bit unusual at first.
If you prefer paying with your credit card,
https://www.binance.com/en is said to be easy to use. You need to provide them a photo of your ID card, but now that you found out about Bitcoin Mixers, you have nothing to fear ;-)