TICA. The International Cat Association. This is the international genealogy registration for recognized breeds, of which it is the only organization which currently recognizes savannahs (SV code). You can purchase a three or five generation pedigree. Much more information is provided such as the birth date, the breed of the parent, generation outcross code (A, B, C, or SBT), the registration number, and the cattery.
In the US, due to some areas having restrictive laws concerning ownership / possession of SV's, this is the owners proof of generation for ownership. This is also proof of SBT (stud book tradition) which is the definition of a pure breed cat (five generations of SV to SV), which is required for showing cats for awards at TICA cat shows. Your name, address, and registration number will be on the papers once you receive the registration
I always recommend getting the TICA papers. It is proof of product. Your breeder will give you the blue slip litter registration of birth for obtaining the the TICA registration. (Breeders register the litters as they occur.)
As that is an SE cat, all of my cats are distant cousins to yours. Nice to meet family.
And I believe you meant "neutered." We all nurture our cats!
(Breeders, did I get this right?)