S.C. Code Ann. § 47-9-370

If any owner who purchases or acquires livestock from another brands the livestock with his own brand, he shall do so in the presence of at least two disinterested parties. The disinterested parties shall certify in writing that they witnessed the branding of the livestock. The certificate shall also state (a) where the branding occurred, (b) with what brand, if any, the livestock were previously branded and (c) with what brand the livestock were branded or rebranded. The certificate shall be retained by the owner. It shall be unlawful to brand any livestock purchased or acquired from another other than in the manner required by this section.