Bitcoin is somewhat private but not completely secret. It's like writing with a codename - people can see what you're doing, but they might not know it's you unless you tell them who you are.

When you use Bitcoin, all transactions are recorded on the blockchain, which anyone can look at. It's like a public notebook where everyone can see that "Address A sent 0.1 Bitcoin to Address B." But these addresses are just long strings of letters and numbers, not names.

Think of it like this: Imagine you're at a costume party where everyone wears masks. People can see what you're doing, but they don't know it's you unless you tell them who you are or take off your mask.

Your Bitcoin address is like your costume at this party. If you never tell anyone which costume is yours, they won't know which transactions are yours. But if you tell someone "Hey, I'm the person in the pirate costume," then they'll know all the activities of the pirate are yours.

This is why some Bitcoin users are careful about connecting their real identity to their Bitcoin addresses. Once someone knows which address is yours, they can see all transactions you've made with that address.

There are ways to make Bitcoin more private, like using new addresses for each transaction (like wearing a different costume to each party) or using special privacy tools. But remember, Bitcoin isn't completely anonymous - it's more like "pseudonymous" (using a codename).