add field contract_hold_order

Helius

2020-07-29 5e9cc7e43718cc6e73036e1794a713814cc264f9

 src/main/java/com/xcong/excoin/modules/coin/service/BlockCoinService.java

@@ -10,4 +10,8 @@

    public void updateBtc();

    public void updateEos();

    public void updateXrp();

}