Pseudonymous describes acting under a consistent identifier that is not a legal name, such as a username, a pen name or a blockchainwallet address. Unlike true anonymity, every action taken under the pseudonym can be linked to the others. Bitcoin and most public blockchains are pseudonymous: anyone can see the full history of an address, but the address does not carry its owner's name. That link is often made later, for example when coins pass through an exchange that runs know your customer checks, or when blockchain analytics firms cluster addresses. Bitcoin's own creator used the pseudonym Satoshi Nakamoto. Projects that try to hide links between transactions are covered under privacy coins.