BloodMagic/src/main/resources/assets/bloodmagic/blockstates/altar.json

{
  "forge_marker": 1,
  "defaults": {
    "textures": { },
    "model": "bloodmagic:BlockAltar.obj",
    "custom": { "flip-v": true },
    "transform" : "forge:default-block"
  },
  "variants": {
        "normal": [{
        }
        ],
    "powered=true": [
      {
      }
    ],
    "powered=false": [
      {

        }]
    }
}