It may be important to know are bitcoin transactions traceable? Bitcoin's blockchain is 100% public and can be inspected by anyone who knows how to do it. This means that bitcoin transaction are traceable, but it takes some skill to do so.
A bitcoin wallet creates a unique address that can store information from the bitcoin blockchain. This wallet will be visible on the blockchain, and in most cases, a transaction will have other information attached to it (although it may not be on the blockchain).
For example, if a person uses bitcoin to buy something that is physical, it would need to be shipped to an address. Assuming the transaction is legal, there will now be a connection between the bitcoin wallet that paid for the goods, and a physical address.
The wallet address can be used to establish a transaction history, and can also be used to track any other wallets that have a person's ID connected to the wallet. None of this is automatically done, and it takes some detective work to create all the needed connections.
Bitcoin transaction have the ability to be very private, but when personal information is connected to a transaction, it isn't difficult to create a transaction history that would be related to anyone that had access to the wallet.
In short, bitcoin transactions are 100% traceable, and this will be true for any blockchain that is open to the public.