"Funky Butt" was a folk song known across the South. That's why Zora Neale Hurston (of Alabama and Florida) and John Hurt knew it, and why Newman White recalled hearing a folk variant in North Carolina in about 1903. (Hurston, Hurt, and White were both all born about 1892, even though Hurston sometimes falsely claimed about a decade younger.) Bolden has no special claim on "Funky Butt" in that context.

As most performed "Funky Butt," it didn't bear all that much relationship to the "blues" songs. Claims that Buddy Bolden performed blues have been mostly based on defining "blues" broadly enough to include... folk songs that he did play, such as "Careless Love." But he may have played the tune that sometimes had lyrics about "2:19," which is what we generally consider a blues tune.

The Ossman-Dudley Trio recorded "Funky Butt" as one of the strains in "St. Louis Tickle" in January 1906. If we consider "Funky Butt" a "blues," then the guitarist in that trio, George Dudley, was the first guitarist to record "blues." But simply calling "Funky Butt" a "blues" is being arbitrarily broad about what we call a "blues" -- too broad, imo.