registry.gm

{
  "name": "token_definition",
  "base": "",
  "fields": [
    {
      "name": "chain",
      "type": "checksum256?"
    },
    {
      "name": "contract",
      "type": "name"
    },
    {
      "name": "symbol",
      "type": "symbol"
    }
  ]
}