Guild Wars 2

Since the ones purchased with karma are account bound, does that mean if I learn it the recipe is available to all characters? For example, my main (Leatherworker/Huntsmen) uses Recipe: Celestial Orichalcum Imbued Inscription and Recipe: Celestial Intricate Gossamer Insignia, does that mean they will also be available to my armorsmith/weaponsmith and artificer/tailor or would I need a copy for each character?

Only the character that used the recipe will learn the recipe.

Account bound just means that it can be purchased by one character, dropped in the bank, picked up by another character and learned. All on the same account of course. At least that’s how I understand it. So only that character that learns the recipe will be able to produce that item.

There’s no reason for two characters on the same account to need the same crafting recipe for an inscription/insignia that goes across crafting disciplines aside from convenience.