I would like to know how to add my own made blueprints into chest loot but i dont know how the blueprints are listed.

Could you give me a hand with that ? :)

I have:
mods.immersiveengineering.Blueprint.addRecipe("Rocket Tier1",
and they do work and showup, its just i dont know what they are called :)

Thnx in advance

This reply is probably entirely too late, but Blueprints are all the same item, immersiveengineering:blueprint and they use NBT data to differentiate themselves, specifically the key blueprint.
So your blueprint would have the NBT entry blueprint: Rocket Tier1

Still not too late and still havent got it fixed.

Could you be so kind to provide me with the right line of code by any chance ? cause i figured out it had to do with nbt just cant seem to get it work :(