⚠️ UUSDT, PLAIUSDT & OXTUSDT Perpetual Contracts Delisting on ONX BIT (by OnX Wallet)

Dear ONX BIT Futures Users,

To mitigate market risks and enhance trading stability, ONX BIT (by OnX Wallet) will delist the following perpetual contracts: UUSDT, PLAIUSDT, and OXTUSDT.

The delisting will take place at 07:00 on April 21, 2026 (UTC).

📅 Delisting Schedule

06:50 (UTC), April 21, 2026: Opening new positions will be suspended
07:00 (UTC), April 21, 2026: Contracts will be officially delisted
Before 07:00: Closing positions remains available

⚙️ Settlement & Risk Handling

All open orders will be automatically canceled upon delisting
Positions will be settled based on the average index price over the last 30 minutes prior to delisting
Users are strongly advised to close positions in advance to avoid potential losses

📊 Updated Mark Price Mechanism (Final 30 Minutes)

To ensure fairness and stability during the delisting process, ONX BIT will apply an updated mark price mechanism:

Mark Price: Average Index Price (calculated every second)
Example: For a 07:00 delisting, the 06:59 mark price is based on the average index price from 06:30 to 06:59

🔄 180-Second Smooth Transition Mechanism

Starting from 06:30 (UTC), the system will gradually transition from the original mark price formula to the new average-based mark price over 180 seconds to reduce price shocks.

Formula:
Mark Price = β × (New Mark Price Formula) + (1 − β) × (Old Mark Price Formula)

⚠️ Risk Warning

Futures trading involves significant risk and may result in the loss of your entire position. Please manage your risk carefully and consider reducing leverage or closing positions ahead of delisting.

This announcement is not investment advice. All trading activities are conducted at your own discretion and risk. ONX BIT (by OnX Wallet) is not responsible for any trading losses.

ONX BIT (by OnX Wallet) Team
April 21, 2026