Abstract: A computer implemented method and system for determining a change to an article of manufacture by analyzing Bills of Materials associated with the article for providing a corresponding change for the article in a Logistics Product Database which drives a corresponding change for the article in a Common Source Database. At least first and second Bill of Materials associated with the article are accessed wherein the first and second Bills of Materials are modeled by forming a respective block chain for each. A change of article data is detected by determining a difference of hash values regarding an aspect of the article when comparing the respective block chains of the first and second Bill of Materials. A notification is provided of a change to the article responsive to the detecting a change of article data.