BigONE DeFi Polkadot


System Upgrade Notice

BigONE will upgrade the system at 1:00:00 (UTC) on October 11, 2019. We will suspend service for around 2 hours including deposit, withdrawal, and trading. Please arrange your transaction in advance. 

After the upgrade, we will also terminate our V2 API services including all interfaces at and Once terminated, all interfaces appear 404 Not Found.

To protect your assets,V2 API will be terminated by two steps.

  1. At 4:00:00 (UTC), October 11, we will terminate the interfaces of Quotes and pending orders and keep the interfaces of balance and withdraw orders.
  2. At 8:00:00 (UTC), October 11, we will terminate all the interfaces left.

The V3 API offers a more stable, efficient experience and more comprehensive functionalities than the V2 API. We suggest you switch to V3 API for trading at or

BigONE will resume service as soon as the upgrade is completed. We apologize for any inconvenience during this period, and thanks for your patience.