An example method for processing a batch job that includes a plurality of sequentially ordered tasks includes obtaining a message that includes inputs of a plurality of tasks included in a batch job. The plurality of tasks includes a first task that is sequentially ordered before a second task. The method also includes assigning tasks of the plurality of tasks to different computing nodes. The first task is assigned to a first computing node associated with a first public key, and the second task is assigned to a second computing node associated with a second public key.