This disclosure describes aspects of parallel processing of blockchain requests, including prescreening that prevents conflicts for parallel processing. In some examples, an address is identified from a blockchain request. The blockchain request is prescreened to determine a conflict status. The conflict status is determined by comparing the address from the blockchain request to at least one address in a parallel execution batch. The blockchain request is placed in the parallel execution batch or a subsequent parallel execution batch based on the conflict status. The blockchain request is performed by parallel processing of the parallel execution batch or the subsequent parallel execution batch.