Private key
In short: A cryptographic secret used to authorize actions under a corresponding account or spending arrangement.
A cryptographic secret used to authorize actions under a corresponding account or spending arrangement. It is different from an address, a public key or a transaction identifier. Do not include it in a support ticket or correction request. A transaction identifier may help an official provider locate a transfer, but a private key can authorize movement. Confusing those roles can expose assets even when the person requesting information appears helpful.