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removed extra $

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Shannon Appelcline 2020-06-23 12:59:14 -10:00 committed by GitHub
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04_4_Sending_Coins_with_a_Raw_Transaction.md
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@ -100,7 +100,7 @@ Writing the actual raw transaction is surprisingly simple. All you need to do is
Here's the example. Note the multiple inputs after the `inputs` arg and the multiple outputs after the `outputs` arg.
```
$ $ rawtxhex2=$(bitcoin-cli -named createrawtransaction inputs='''[ { "txid": "'$utxo_txid_1'", "vout": '$utxo_vout_1' }, { "txid": "'$utxo_txid_2'", "vout": '$utxo_vout_2' } ]''' outputs='''{ "'$recipient'": 0.009, "'$changeaddress'": 0.0009 }''')
$ rawtxhex2=$(bitcoin-cli -named createrawtransaction inputs='''[ { "txid": "'$utxo_txid_1'", "vout": '$utxo_vout_1' }, { "txid": "'$utxo_txid_2'", "vout": '$utxo_vout_2' } ]''' outputs='''{ "'$recipient'": 0.009, "'$changeaddress'": 0.0009 }''')
```
We were _very_ careful figuring out our money math. These two UTXOs contain 5.85 BTC. After sending 0.009 BTC, we'll have .00099999 BTC left. We chose .00009999 BTC the transaction fee. To accommodate that fee, we set our change to .0009 BTC. If we'd messed up our math and instead set our change to .00009 BTC, that additional BTC would be lost to the miners! If we'd forgot to make change at all, then the whole excess would have disappeared. So, again, _be careful_.