Not sure what you are looking for, but I'll try to help....
Companies post contingency awards for various events. They set the rules for who gets the awards and for what the awards are. They also generally have requirements for the competitor to run a sticker or some other identification. They generally require some sort of registration beforehand.
If you finish in one of the positions for the awards, you send your information to either the company or SCCA and they send the award. Depending on how it is set up, either the company or SCCA will verify that you actually used the product
Hoosier pays contingency for National event finishes in 1st or 2nd. You register on their website and they send the stickers. If you place, you send them the results and their redemption form and they send tires.
For Solo, I don't think anyone is offering contingency for anything but ProSolo and National Tour events right now, but Mini may be for Divisionals.
HTH,
DaveW