Before apostille a Social Security Card, you'll need to get a notarized copy of your Social Security Card first. 1. What is notarization? In the US, a notary public commissioned by the state government certifies the authenticity of any signatures appended to a document. Notaries act as government agents to verify the signer's ID, and ensure the signer's willingness to sign without duress or intimidation and the signer's awareness of the document's contents. This notarization