minecraft-assets/data/minecraft/recipes/netherite_pickaxe.json

{
  "type": "minecraft:crafting_shapeless",
  "ingredients": [
    {
      "item": "minecraft:netherite_ingot"
    },
    {
      "item": "minecraft:diamond_pickaxe"
    }
  ],
  "result": {
    "item": "minecraft:netherite_pickaxe"
  }
}