message: fix widthdraw bct
diff: @@ -128,16 +128,13 @@ const send = async (from, to, amount) => {
  const unspents = await fetchUnspents(from)
  const fundValue = new BigNumber(String(amount)).multipliedBy(1e8).integerValue().toNumber()
  - const feeValue = 5000
  + const feeValue = 15000
  const totalUnspent = unspents.reduce((summ, { satoshis }) => summ + satoshis, 0)
  - const skipValue = totalUnspent - (fundValue - feeValue)
  + const skipValue = totalUnspent - fundValue - feeValue
  unspents.forEach(({ txid, vout }) => tx.addInput(txid, vout, 0xfffffffe))
  - tx.addOutput(to, fundValue - feeValue)
  -
  - if (skipValue > feeValue) {
  + tx.addOutput(to, fundValue)
  tx.addOutput(from, skipValue)
  - }
  tx.inputs.forEach((input, index) => {
  tx.sign(index, keyPair)
  