message: btc tx info - final balance after tx mined
diff: @@ -310,8 +310,11 @@ const fetchTx = (hash) =>
  const fetchTxInfo = (hash) =>
  fetchTx(hash)
  .then(({ vin, vout, ...rest }) => ({
  + amount: vout ? new BigNumber(vout[0].value).toNumber() : null,
  + afterBalance: vout && vout[1] ? new BigNumber(vout[1].value).toNumber() : null,
  senderAddress: vin ? vin[0].addr : null,
  receiverAddress: vout ? vout[0].scriptPubKey.addresses : null,
  + confirmed: (rest.confirmations) ? true : false,
  ...rest,
  }))
  