text: CREATE SCHEMA `block_chain_agent` DEFAULT CHARACTER SET utf8 COLLATE utf8_bin ;
  
  SET FOREIGN_KEY_CHECKS=0;
  
  drop table if exists `deposit_wallet`;
  create table deposit_wallet(
      id bigint,
      mnemonic varchar(250) not null comment 'mnemonic of wallets',
      private_key varchar(66) not null comment 'private key of deposit wallet',
      public_key varchar(66) not null comment 'public key of deposit wallet',
      addr varchar(34) not null comment 'address of deposit wallet',
      max_use int not null comment 'max sum of up chain wallets',
      primary key (`id`)
  );
  
  drop table if exists `up_chain_records`;
  create table up_chain_records(
      id bigint auto_increment,
      txid varchar(128) not null comment 'up chain txid',
      type varchar (10) not null comment 'up chain type',
      create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
      primary key (`id`)
  );
  