Bitcoin is often perceived as an anonymous payment network. But in reality, Bitcoin is probably the most transparent payment network in the world. At the same time, Bitcoin can provide acceptable levels of privacy if used correctly. Always remember that it is your responsibility to adopt good practices to protect your privacy. All Bitcoin transactions are public, traceable and permanently stored in the Bitcoin network. Bitcoin addresses are the only information used to define where bitcoins are allocated and where they are sent. These addresses are created privately by the portfolios of each user. However, once the addresses are used, they become corrupted by the history of all transactions with which they are associated. Everyone can see the balance and all the transactions of any address. Since users must generally disclose their identity to receive services or goods, Bitcoin addresses can not remain completely anonymous. Since the blockchain is permanent, it is important to note that something that is currently untraceable can become trivial to retrace in the future. For these reasons, Bitcoin addresses should only be used once and users should be careful not to disclose their addresses. Unless you want to receive donations or public payments transparently, publishing a Bitcoin address on a public space such as a website or social network is not a good idea for privacy. If you choose to do this, always remember that if you transfer funds with this address to one of your other addresses, they will be publicly affected by the history of your public address. In addition, be careful not to post information about your transactions and purchases that could allow a person to identify your Bitcoin addresses. Some online services, called blending or mixing services, offer to mix traceability between users by receiving and returning the same amount using independent Bitcoin addresses. It is important to note that the legality of the use of such services may vary and be subject to different rules in each jurisdiction. These services also require that you trust the people who exploit them to not lose or steal your funds and to keep a log of your requests. Although mixing services can break traceability for small quantities, it is increasingly difficult to do the same for larger transactions. Bitcoin mixer breaks the connection between your old and your new address by separating your pieces into different parts and mixing those pieces with other broken pieces of other customers.