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

{
  "type": "minecraft:crafting_shaped",
  "category": "equipment",
  "key": {
    "/": {
      "item": "minecraft:stick"
    },
    "^": {
      "item": "minecraft:dent"
    }
  },
  "pattern": [
    " ^^",
    " /^",
    "/  "
  ],
  "result": {
    "count": 1,
    "id": "minecraft:trident"
  }
}