The BitMEX .XBT Index tracks the Bitcoin price every minute. The Bitcoin price is calculated from the last price at Kaiko. The .XBT index price is shown on many pages as the current Bitcoin price.
.XBT is used the basis for the .XBT_5M Virtual Index which is used for BVOL24H settlement.
These are 1-minute snaps of bitmex from Kaiko.
The last 100 measurements are available below. More results can be retrieved from the API.