Using an online pseudonym (e.g., Satoshi Nakamoto) will improve your privacy, but remember that a capable investigator can identify you over a standard internet connection.
Most Bitcoin wallets broadcast your real IP address, which can then be easily associated with your address(es).
As all Bitcoin transactions are a matter of public record, any address that becomes associated with your identity reveals four important pieces of information:
- How much Bitcoin you have or had in that address
- Exactly when you receive Bitcoin
- Who you receive or received that Bitcoin from (unless they employ effective privacy methods)
- The address to which you send any Bitcoin (which, as with Number 3, may identify its owner).
Bitcoin wallets with coin control features allow you to make payments from select addresses (technically called UTXOs), giving you some control over what addresses you expose.
However, the way most Bitcoin wallets handle change often results in various addresses within the wallet becoming linked.
As a result, one identity-associated address under your control can “leak” information about your other “unknown” addresses.
From Buying and Using Bitcoin Anonymously Without ID (Updated 2024)
https://99bitcoins.com/buy-bitcoin/anonymously-without-id/
Obscuring the Trail Through Altcoin Shifting
Why stop at mixing between Bitcoin addresses? Mixing between Bitcoin and privacy-centric altcoins provides another layer of obscurity.
This method may require a little less trust than a centralized mixing service. The best altcoin to use for this purpose is probably Monero (XMR).
This short guide covers buying Monero with Bitcoin (tl;dr, you can use Binance). To anonymize your bitcoins, simply convert them to XMR, forward them to a new Monero address under your control, and then convert them back to a new, anonymous BTC.
Source: From Buying and Using Bitcoin Anonymously Without ID (Updated 2024)
https://99bitcoins.com/buy-bitcoin/anonymously-without-id
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