Cherokee has a registry. My kids are on it, even though they are only 1/ 32nd. They have a little more Indian from my side, but can’t prove it. So it’s not a good idea to claim Cherokee. They keep records.
The Cherokee actually had slaves, but they won’t give descendants of their slaves any recognition as belonging to the Cherokee nation.
Google Cherokee and slaves
https://en.wikipedia.org/wiki/Slavery_among_Native_Americans_in_the_United_States
Google Cherokee and slaves