I think upcoming rappers and the next generation rappers will have names such as:
Etherium - Lil Ether
Dash - Dash cents
Steem - Lil steem
Monero - Young Monero
Bitcoin - Satoshi Kid
Litecoin - Lil-toshi
Blockchain- Block-chains
Steem dollar - SBD millionare
Bitcoin - Lil Nagamoto
Verge - Young verge
We already have Black Satoshi.
The latest cryto-rapper on the block...