spec.json

{
  "authoringVersion": "0",
  "transactionVersion": "2",
  "implVersion": "0",
  "specName": "polkadot",
  "specVersion": "16",
  "chainType": {
    "Live": null
  },
  "properties": {
    "ss58Format": "0",
    "tokenDecimals": "12",
    "tokenSymbol": "DOT"
  }
}