QuickPar is a utility for creating Parity Volumes using the Reed Solomon algorithm. For details of the algorithm used, see the parchive website at SourceForge.
Parity Volumes may be used to verify that a set of files have not been corrupted, or to reconstruct damaged files (providing that you have a sufficient quantity of Parity Volumes to match the missing or damaged files).
QuickPar uses the PAR version 2.0 specification. You can read about the differences between PAR version 1.0 and PAR version 2.0 here.
Get all files prepared to fill a disc. If quickpar is installed to shell, you can right click the folder and choose quickpar, to make repair files for the files inside the folder. The repair files created should be named for the main or parent folder automatically.
If you make a BD-R disc image of around 23.1GB, a surefire way to protect that data is use Quickpar to create 4.6gb (dvd size) of par2 and burn it to a separate dvd-r.