1.4 How is the index price calculated?

Index price: The price calculated based on the spot market prices of multiple top exchanges and weighted in different proportions is a key indicator for calculating unrealized profit and loss and determining position risk in perpetual contracts. To

To ensure that the spot index price reasonably reflects the fair spot market price of each currency, we will select currency pairs from more than 3 mainstream exchanges for each contract currency as the index weight component, and design exception handling logic to ensure a single transaction When the price deviates significantly, the index fluctuation is within the normal range.

When there is an abnormality in the spot market price of a certain exchange in the index component, then the abnormal data source will be removed from the index component by the platform.

To

The transaction price of perpetual contracts is anchored to the market price by anchoring the index price, and the index price is used as the calculation price of profit and loss, rather than the market price. Unless someone can manipulate the prices of multiple exchanges, "pin" in multiple top exchanges at the same time, and affect the index price, it is difficult to liquidate positions.

To

List of price components of contract currency spot index:

Index price update logic:

When a data source system is maintained or the transaction has not been updated for a long time, the data of the exchange will be removed from the index calculation until the transaction information continues to be updated.

To

Determine the current valid transactions:

>=3, weighting the effective exchange data with equal weights (if the price of a certain exchange deviates by more than 3% from the median price of all exchanges, then the exchange price is based on the median*0.97 or median*1.03 Calculation).
=2, take the average
=1, take the value of that one
For the XXX/BTC trading pair, it will be calculated by multiplying the price of the BTC index on the coinidc exchange.