A frequent source of confusion is the difference between a wallet address and a private key. Getting this straight is essential to using crypto safely.
A wallet address is public. It is what you share so others can send you crypto, and anyone can view its balance and history on a block explorer. Sharing it is completely safe and cannot be used to take your funds.
A private key is the exact opposite: a secret that must never be shared. It is what actually authorises moving funds out of the wallet. Whoever holds the private key controls the money at that address.
The two are mathematically linked, but only in one direction. Your public address is generated from your private key, yet the process cannot be reversed. No one can work backward from your public address to discover your private key.
So the rule is simple and worth memorising: share your address freely to receive funds, and guard your private key absolutely, because it is the only thing that can move them.
