Which digital retail innovation revolutionized the authentication and sale of historical military artifacts in the early 2000s?

The retail landscape for military equipment and memorabilia has undergone significant digital transformation in recent decades. This transformation has impacted how collectors, museums, and military institutions acquire historically significant items. Test your knowledge about a revolutionary retail innovation that changed how military artifacts are authenticated and sold worldwide.

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The Military Provenance Database (MPD), which digitally tracks ownership history of artifacts back to their origin
WarMart, the first subscription-based marketplace exclusively for verified military collectors
BattleBlock, the blockchain-based authentication system introduced in 2003
The Pentagon's Official Retail Extension Program (POREP) that certifies civilian retailers