{
    "display": {
        "icon": {
            "item": "tetra:modular_double",
            "nbt": "{\"id\": \"upgrades/root\", \"double/head_left\": \"double/basic_hammer_left\",\"double/basic_hammer_left_material\": \"basic_hammer/copper\",\"double/head_right\": \"double/basic_hammer_right\",\"double/basic_hammer_right_material\": \"basic_hammer/copper\",\"double/handle\": \"double/basic_handle\",\"double/basic_handle_material\": \"basic_handle/stick\"}"
        },
        "title": {
            "translate": "tetra.advancements.upgrades.root.title"
        },
        "description": {
            "translate": "tetra.advancements.upgrades.root.description"
        },
        "background": "tetra:textures/block/forged_platform.png"
    },
    "criteria": {
        "hammer": {
            "trigger": "minecraft:inventory_changed",
            "conditions": {
                "items": [
                    {
                        "items": [
                            "tetra:modular_double"
                        ]
                    }
                ]
            }
        }
    },
    "rewards": {
        "recipes": [
            "tetra:modular_toolbelt"
        ],
        "loot": [
            "tetra:holosphere_reward"
        ]
    }
}