Minecraft’s fragmentation between Java Edition and Bedrock Edition has long been a headache for creators. Java boasts a vast library of .jar mods, while Bedrock uses the .mcaddon format (a renamed .zip file containing behavior packs and resource packs).

The "verified" part comes down to rigorous validation, correct UUIDs, and passing Microsoft’s internal checks. For 90% of creators, a manually verified addon (one that imports without errors) is sufficient. For the Marketplace, official certification is the gold standard.

A .jar mod adds new (code). An .mcaddon is a data pack that redefines behaviors using JSON—it cannot run raw Java code.