yes, i know it, but how to attach coin?
I found that:
{
  "coinType": "bridge.btc",
  "walletName": "BitShares 2.0",
  "name": "Bitcoin",
  "symbol": "BRIDGE.BTC",
  "walletSymbol": "BRIDGE.BTC",
  "walletType": "bitshares2",
  "transactionFee": "0.0003",
  "precision": "100000000",
  "backingCoinType": "btc",
  "supportsOutputMemos": false,
  "restricted": false,
  "depositAllowed": true,
  "requiredConfirmations": 3
}and 
{
  "coinType": "btc",
  "walletName": "BTC",
  "name": "Bitcoin",
  "symbol": "BTC",
  "walletSymbol": "BTC",
  "walletType": "btc",
  "transactionFee": "0",
  "precision": "100000000",
  "backingCoinType": null,
  "supportsOutputMemos": false,
  "restricted": false,
  "depositAllowed": true,
  "requiredConfirmations": 3
}
But i found no information regarding how to attach coin daemon via RPC or any other way.