Too Long; Didn't Read
Bitcoin is known as an immutable ledger, a leger that is publicly available and keeps a record of every single transaction that happens on the network. It’s true that anybody can transact Bitcoin, but it's also true that anyone can see all of those Bitcoin transactions. Most online solutions that are offering this service (i.e. cryptocurrency exchanges) will require you to identify yourself first due to the KYC (Anti-Money Laundering) and AML (Know Your Customer) legislation.