BitMEX updated its indices across all products today, 27 December 2019 at 12:00:05 UTC.
The affected indices include .BXBT, .BETH, .BETHXBT, .BXRPXBT, .BBCHXBT, .BLTCXBT, .BEOSXBT, .BADAXBT and .BTRXXBT.
Please see our blog post and BitMEX Indices page for index weights and further details.