A private key is a secret code which allows the user to prove their ownership of their Bitcoins. Every Bitcoin address has a matching private key, which is saved in the wallet file of the person who owns the balance.

The private key is mathematically related to the Bitcoin address, and is designed so that the Bitcoin address can be calculated from the private key, but importantly, the same cannot be done in reverse.

Please keep your private keys safe, and make periodic backups to prevent the loss of your Bitcoin.

Private key must be kept a secret and it is advised that users shall store their private keys on a local harddrive which have no internet connection."