user91539: I would like to know if there a way('command') to know what is the max supply of bitcoin using my own node without trusting a third party. 
Also if anyone could explain to me why :

bitcoin-cli gettxoutsetinfo

returns this message when written: 
*error: Could not connect to the server 127.0.0.1:8332 (error code 0 - "timeout reached")
    Make sure the bitcoind server is running and that you are connecting to the correct RPC port.*

Is that bcuz I'm running behind tor? Would be great if some of you guys can expand on these 2 doubts.

user89798: In a sense, such a command would be trusting a third party: any putative answer would be that given by whoever supplied that code to you; and it may not be trustworthy - it could tell you it was 21 million, but behind the scenes actually use, say, 42 million.  
The nearest you could do would be to download the source code from a proper source and, having verified your download, check the file src/amount.h for the line static const CAmount MAX_MONEY = 21000000 * COIN; before building the software yourself. You are now more sure that your node has the proper max supply. 

91539: <p>I would like to know if there a way('command') to know what is the max supply of bitcoin using my own node without trusting a third party. </p>

<p>Also if anyone could explain to me why :</p>

<blockquote>
  <p>bitcoin-cli gettxoutsetinfo</p>
</blockquote>

<p>returns this message when written: </p>

<pre><code>*error: Could not connect to the server 127.0.0.1:8332 (error code 0 - "timeout reached")
    Make sure the bitcoind server is running and that you are connecting to the correct RPC port.*
</code></pre>

<p>Is that bcuz I'm running behind tor? Would be great if some of you guys can expand on these 2 doubts.</p>
 89798: <p>In a sense, such a command <em>would</em> be trusting a third party: any putative answer would be that given by whoever supplied that code to you; and it may not be trustworthy - it could <em>tell</em> you it was 21 million, but behind the scenes <em>actually</em> use, say, 42 million.  </p>

<p>The nearest you could do would be to download the source code from a <a href="https://bitcoincore.org/en/download/" rel="nofollow noreferrer">proper source</a> and, having verified your download, check the file <code>src/amount.h</code> for the line <code>static const CAmount MAX_MONEY = 21000000 * COIN;</code> before building the software yourself. You are now more sure that your node has the proper max supply. </p>
