fix

Author: colinlyguo

coordinator/internal/logic/provertask/chunk_prover_task.go

@@ -214,7 +214,11 @@ func (cp *ChunkProverTask) formatProverTask(ctx context.Context, task *orm.Prove
 
 	var blockHashes []common.Hash
 	for _, block := range blocks {
-		blockHashes = append(blockHashes, block.Header.Hash())
+		if block.Header.Number.Uint64() == 0 {
+			return nil, fmt.Errorf("failed to fetch block hashes of a chunk, chunk hash:%s, block number is 0", task.TaskID)
+		}
+		log.Info("get block hash of chunk task", "number", block.Header.Number.Uint64()-1, "hash", block.Header.ParentHash)
+		blockHashes = append(blockHashes, block.Header.ParentHash)
 	}
 
 	taskDetail := message.ChunkTaskDetail{