Intelligent control lock based on block chain technology and use method

The intelligent control lock based on the block chain technology is assembled on a shell of a door lock of an anti-theft door, the holding end of a key used for unlocking the door lock is assembled in the intelligent control lock, the intelligent control lock comprises a shell, an assembly fixing ring is arranged on one side of the shell, and the assembly fixing ring is arranged on the other side of the shell. The assembly fixing ring is arranged between the outer shell and the anti-theft door body, and the shell body is arranged on the outer side of the outer shell. A rotating cavity, a control cavity and a power supply cavity are formed in the shell. A rotating mechanism is arranged in the rotating cavity, an assembling cavity used for assembling a key is formed in the rotating mechanism, and the rotating mechanism extends out of the side, facing the door lock, of the shell. And a circuit board is arranged in the control cavity. And a battery is arranged in the power supply cavity. Compared with the prior a