PROBABLY FOUND IT NEXT TO Zer0’s BC.
Christopher Child is the guy who produced the Obama BC.
For the Cherokee and many other Indians FORMAL MEMBERSHIP (usually attested to with a little blue card) counts on two things ~ the appearance of 1 or more ancestors in the Dawes Rolls, and at least 'any', 1/4 or 1/16 Cherokee ancestry (the blood quantum) depending on which "band'.
It's up to the US Government ~ not commenters and not popular belief. http://www.tngenweb.org/tnfirst/recognized.html