SYSTEMS, PROCESSES, AND COMPUTER PROGRAM PRODUCTS FOR AUTHENTICATION OF DOCUMENTS BASED ON INVISIBLE INFORMATION IN DOCUMENTS

Embodiments identify documents with invisible or hidden information such as tracking codes and extract the tracking codes, which may be leveraged for different applications. Aspects may protect an individual's right to privacy by extracting "invisible" codes from a document. Other aspects preserve the authenticity of documents by converting the information of an extracted tracking code into other metadata which may accompany the document and copies of the document. In an embodiment, a blockchain ledger may be used to verify the authenticity of a document using information from the original tracking code.