fix the timestamp

services/explorer/service.go

@@ -148,7 +148,7 @@ func GetTransaction(tx *types.Transaction, accountBlock *types.Block) Transactio
 	}
 	return Transaction{
 		ID:        tx.Hash().Hex(),
-		Timestamp: strconv.Itoa(int(accountBlock.Size())),
+		Timestamp: strconv.Itoa(int(accountBlock.Time().Int64())),
 		From:      tx.To().Hex(),
 		To:        tx.To().Hex(),
 		Value:     strconv.Itoa(int(tx.GasPrice().Int64())),

services/explorer/storage.go

@@ -90,7 +90,7 @@ func (storage *Storage) Dump(accountBlock []byte, height uint32) {
 	blockInfo := BlockInfo{
 		ID:        block.Hash().Hex(),
 		Height:    string(height),
-		Timestamp: string(block.Time().Int64()),
+		Timestamp: strconv.Itoa(int(block.Time().Int64())),
 		TXCount:   string(block.Transactions().Len()),
 		Size:      block.Size().String(),
 	}