copper_silver_shulker_box_upgrade.json

{
	"type": "minecraft:crafting_shaped",
	"group": "ironshulkerbox:upgrades",
	"pattern": [
		"MMM",
		"MSM",
		"MMM"
	],
	"key": {
		"M": {
			"tag": "forge:ingots/silver"
		},
		"S": {
			"tag": "forge:ingots/copper"
		}
	},
	"result": {
		"item": "ironshulkerbox:copper_silver_shulker_box_upgrade"
	}
}