I'm new to the platform and am trying to map the securities from my proprietary data set to quantopian's SID. Do you all support any 3rd party ids, beyond ticker symbol, like ISIN, CUSIP, SEDOL, etc? If not, can you point me toward a ticker style guide, describing how multiple share classes are handled (dots or dashes?!) and how common exchanges are coded?
If you don't support ISINs, etc, I would look into integrating with Bloomberg's OpenFIGI symbology. It's a consistent, open source system with a robust API. Supporting it would allow researchers to quickly map pretty much any symbology to SIDs almost seamlessly.