15. A computer system for generating a provenance for a physical object, the computer system comprising: one or more computer processors; one or more computer readable storage media; program instructions stored on the computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising: program instructions to identify a first source of information that includes unstructured text and one or more keywords associated with an object; program instructions to retrieve the unstructured text included in the first source; program instructions to identify provenance information of the object that is included in one or more segments of the unstructured text, wherein the identified provenance information is verified; program instructions to add the identified provenance information of the object to a timeline; program instructions to receive a purported provenance information; program instruction to determine a degree of accuracy of the purported provenance information using a statistical analysis based, at least in part, on a number of occurrences of the purported provenance information in the identified provenance information and a source of the purported provenance information, wherein the source of the purported provenance information comprises a historical context and one or more characteristics of a seller of the physical object; and in response to determining the degree of accuracy, program instructions to generate a report, wherein the report compares the purported provenance information to the identified provenance information, and wherein the report comprises (i) the degree of accuracy of the purported provenance information and (ii) an overlap between the purported provenance information and the identified provenance information.
16. The computer system of claim 15 , wherein the provenance information includes at least one of a temporal characteristic, a location characteristic, an ownership characteristic, an action characteristic, or a fact about an event that affected the provenance of the object.