(AllHipHop News) Nas is challenging his true fans to prove their knowledge of the all-time great in a new online contest. The “Nas Rap Test” will offer winners bitcoin currency as prizes.

The official Nas Facebook page announced the competition with the following post:

Are you a true NAS fan? Take the Nas Raptest:http://theraptest.com/#contest/nas. The Top 100 on the leaderboard after the first week will receive bitcoin, courtesy of Coinbase. Bitcoin is a digital currency and global payment network that allows you to send money anywhere in the world instantly and for free.

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“[Bitcoin] will evolve into an industry as big, if not bigger, than the Internet,” Nas told Coindesk earlier this year. “My man Ben Horowitz really opened my eyes to that point. This isn’t of the Internet age, bitcoin is its own age.”

The “Nas Rap Test” includes having to identify Nas songs just by listening to portions of the track. The site also offers tests for 2Pac, Drake, Kanye West, Kendrick Lamar, Eminem, and J. Cole.

To test your Nasir Jones knowledge visit theraptest.com.