The Bitcoin blockchain is a public ledger, anyone can see transactions and associated wallet addresses but the real world names of wallet holders aren’t hidden. This is why Bitcoin is considered pseudonymous not anonymous. Bitcoin mixers (or tumblers) solve this problem by mixing coins from multiple users and severing any connection between the original input and output addresses.
Samourai Whirlpool is a free and open source (FOSS), non custodial cryptocurrency mixer that aims to mathematically disassociate inputs from their respective outputs. This is done in order to increase transactional privacy, protect against financial surveillance and to help with the fungibility of the Bitcoin network as a whole. It does so by using a highly secure crypto mixing algorithm designed and implemented by Samourai.
Mixers are widely used by people looking to enhance their bitcoin transactional privacy and are considered legal in most countries. However, they do not guarantee complete anonymity and can be abused for illegal purposes. For this reason, it is important to use a reputable mixer that has a good reputation and provides transparent public blockchain records.
Some Bitcoin mixers also require you to sign up for an account and provide some personal information before they will mix your coins. This can be a big red flag and should always be avoided. Samourai Whirlpool is an example of a non-custodial cryptocurrency mixer that does not require user registration and instead mixes coins using data encryption methods. It also offers competitive fees and a high degree of anonymity by mixing your coins with up to 10 different payout addresses. Bitcoin Mixer