Block chain-based job processing method, device and system

The invention discloses a block chain-based job processing method, device and system, and relates to the technical field of block chains, the method comprises the following steps: receiving a job processing request, the request comprising job information; calculating the height of a block where the job entry information is located according to the job information, and judging whether the corresponding block is a check point block or not according to the height of the block; in response to the judgment result of the check point block, judging whether the equipment to which the light node belongs can process the operation or not according to the current resource of the equipment to which the light node belongs; in response to a judgment result that the job cannot be processed, triggering a voting right transfer process, so that after the voting right transfer process is completed, all nodes execute operations corresponding to the job information and generate entry information; and receiving entry information fr