Billboard is considered the most authoritative source for music charts and publishes a weekly list of the top 25 Hip-Hop and R&B songs. Billboard compiles the list from a combination of radio airplay statistics, record sales data and online streaming data.
In addition, iTunesCharts.com publishes a regularly updated Top 40 list of Hip-Hop tracks purchased via Apple's iTunes store. Shazam.com compiles a Top 10 list of Hip-Hop songs played via its digital streaming service. DJBooth.net is home to several hip-hop charts further subdivided by category, including Club Hip-Hop, Indie Hip-Hop and Rap. Finally, HotNewHipHop.com publishes a daily Top 100 chart for Hip-Hop songs based on the number of views received through its website.