darkfi/token/bitcoin_token_list.json

{
  "name": "Bitcoin Token List",
  "tokens": [
    {
      "chainId": 1,
      "address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
      "symbol": "BTC",
      "name": "Bitcoin",
      "decimals": 8
    }
  ]
}