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authorFractal Encrypt <fractalencryptlsd@gmail.com>2024-05-04 08:00:07 -0700
committerbitcoindev <bitcoindev@googlegroups.com>2024-05-04 08:40:31 -0700
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downloadpi-bitcoindev-eb935da7f4e43e6636a463f1e1205a121e1b9a20.tar.gz
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[bitcoindev] A Fool's Errand or should I try?
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+Date: Sat, 4 May 2024 08:00:07 -0700 (PDT)
+From: Fractal Encrypt <fractalencryptlsd@gmail.com>
+To: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
+Message-Id: <75628135-32ae-4df3-be52-9f7d054bc096n@googlegroups.com>
+Subject: [bitcoindev] A Fool's Errand or should I try?
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+------=_Part_1713_833547110.1714834807661
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+
+TLDR: I'd like to investigate the possibilities of extending
+decoderawtransaction to include the fee (and maybe even sats per v/b).
+
+I'm hoping it will be a good project for me to work on and build at least a
+tiny understanding of bitcoin development.
+
+------------------------------------------------------------------------
+
+I use the createrawtransaction function to create transactions, and before
+broadcasting, I always like to use decoderawtransaction to see if I made
+any mistakes.
+
+I've sometimes messed up on the fee calculation, as I do that myself with a
+calculator.
+
+Unfortunately decoderawtransaction doesn't give me the fee information (for
+a very good reason, it is not aware of the value of the inputs in the tx).
+
+So to double check the fees, instead of using createrawtransaction, I'll
+use createpsbt and then go through the process of finalizing it so I can
+run decodepsbt, which does give the fee along with all the other relevant
+data.
+
+But the createpsbt process is more work for a simple transaction where all
+UTXOs are in the wallet I am creating the rawtx in.
+
+My goal would be to modify decoderawtransaction to perform these additional
+steps:
+
+ 1. Fetch UTXO details for each input.
+ 2. Calculate the total input value.
+ 3. Subtract the total output value to determine the fee.
+
+Additionally there are the considerations about whether the inputs in the
+transaction are in your wallet or not.
+
+If I run listunspent it gives me the info I need to create the raw tx or
+psbt, and it has the values of the UTXOs that will be used as inputs in my
+tx.
+
+But I understand decoderawtransaction is meant to be used whether or not
+the keys are in your wallet (so I was thinking to make a command argument
+T/F to show the fee value only if keys are in your wallet).
+
+Alternatively if you are running the command in a node with txindex, then
+you have the full chainstate to look up txids (whether unspent or not) - so
+this needs to be addressed too.
+
+Doing this within my own node would be cool enough and I don't necessarily
+need it to go farther than that. However if I do get it working, I'd
+certainly try to submit a PR.
+
+I have no idea if any of this is possible, so I wanted to ask here for some
+guidance and maybe mentorship in this self-interest driven project. Also
+looking for this to be shot down mercilessly if it's just ridiculous.
+
+My abilities and skills are very low. My interest and persistence are high.
+
+Any help or ridicule invited ;)
+
+--
+You received this message because you are subscribed to the Google Groups "Bitcoin Development Mailing List" group.
+To unsubscribe from this group and stop receiving emails from it, send an email to bitcoindev+unsubscribe@googlegroups.com.
+To view this discussion on the web visit https://groups.google.com/d/msgid/bitcoindev/75628135-32ae-4df3-be52-9f7d054bc096n%40googlegroups.com.
+
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+Content-Type: text/html; charset="UTF-8"
+Content-Transfer-Encoding: quoted-printable
+
+<div>TLDR: I'd like to investigate the possibilities of extending decoderaw=
+transaction to include the fee (and maybe even sats per v/b).</div><div><br=
+ /></div><div>I'm hoping it will be a good project for me to work on and bu=
+ild at least a tiny understanding of bitcoin development.</div><div><br /><=
+/div><div>-----------------------------------------------------------------=
+-------<br /></div><div><br /></div><div>I use the createrawtransaction fun=
+ction to create transactions, and before broadcasting, I always like to use=
+ decoderawtransaction to see if I made any mistakes.</div><div><br /></div>=
+<div>I've sometimes messed up on the fee calculation, as I do that myself w=
+ith a calculator.</div><div><br /></div><div>Unfortunately decoderawtransac=
+tion doesn't give me the fee information (for a very good reason, it is not=
+ aware of the value of the inputs in the tx).</div><div><br /></div><div>So=
+ to double check the fees, instead of using createrawtransaction, I'll use =
+createpsbt and then go through the process of finalizing it so I can run de=
+codepsbt, which does give the fee along with all the other relevant data.<b=
+r /></div><div><br /></div><div>But the createpsbt process is more work for=
+ a simple transaction where all UTXOs are in the wallet I am creating the r=
+awtx in.</div><div><br /></div><div>My goal would be to modify <span>decode=
+rawtransaction</span> to perform these additional steps:<ol><li>Fetch UTXO =
+details for each input.</li><li>Calculate the total input value.</li><li>Su=
+btract the total output value to determine the fee.</li></ol><div>Additiona=
+lly there are the considerations about whether the inputs in the transactio=
+n are in your wallet or not. <br /></div><div><br /></div><div>If I run lis=
+tunspent it gives me the info I need to create the raw tx or psbt, and it h=
+as the values of the UTXOs that will be used as inputs in my tx.<br /><br /=
+>But I understand decoderawtransaction is meant to be used whether or not t=
+he keys are in your wallet (so I was thinking to make a command argument T/=
+F to show the fee value only if keys are in your wallet).<br /><br />Altern=
+atively if you are running the command in a node with txindex, then you hav=
+e the full chainstate to look up txids (whether unspent or not) - so this n=
+eeds to be addressed too.</div><div><br /></div><div>Doing this within my o=
+wn node would be cool enough and I don't necessarily need it to go farther =
+than that. However if I do get it working, I'd certainly try to submit a PR=
+.<br /></div><div><br />I have no idea if any of this is possible, so I wan=
+ted to ask here for some guidance and maybe mentorship in this self-interes=
+t driven project. Also looking for this to be shot down mercilessly if it's=
+ just ridiculous.</div><div><br /></div><div>My abilities and skills are ve=
+ry low. My interest and persistence are high.</div><div><br /></div><div>An=
+y help or ridicule invited ;)<br /></div>
+
+</div>
+
+<p></p>
+
+-- <br />
+You received this message because you are subscribed to the Google Groups &=
+quot;Bitcoin Development Mailing List&quot; group.<br />
+To unsubscribe from this group and stop receiving emails from it, send an e=
+mail to <a href=3D"mailto:bitcoindev+unsubscribe@googlegroups.com">bitcoind=
+ev+unsubscribe@googlegroups.com</a>.<br />
+To view this discussion on the web visit <a href=3D"https://groups.google.c=
+om/d/msgid/bitcoindev/75628135-32ae-4df3-be52-9f7d054bc096n%40googlegroups.=
+com?utm_medium=3Demail&utm_source=3Dfooter">https://groups.google.com/d/msg=
+id/bitcoindev/75628135-32ae-4df3-be52-9f7d054bc096n%40googlegroups.com</a>.=
+<br />
+
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+
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+
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