Describe the meaning behind using numbers in reference rates' name.
The value of the serial number of a single asset reference rate signs the computation method used for its calculation.
Serial Numbers
Daily single assets are computed once a day for multiple different timezones. Each series is identified by a serial number and its suffix is uniquely defined by
*A 24-hour last observation carried forward (LOCF) is used.
VFIX
The created_at and timestamp are derived from the calculation time, not the trades' created_at.
Deprecation notice
The c-* series of indices is deprecated in favor of the methodologically equivalent p-* series.
While existing symbols will continue to be calculated for compatibility, new series will not have a c-* counterpart.
We recommend transitioning to the p-* denomination.