user59319: Suppose I make a locked wallet with 50000 pre-generated addresses.
As long as I researched, only way I can collect those 50000 addresses using RPC and "getnewaddress". Feel free to correct me.
I understand this will took several hours or days, so I can set this up on some VPS and let it run.
For this I do not need blockchain to be synchronized.
How can I start bitcoind without blockchain synchronization?
I am thinking about "connect" option or testnet, but both looks like a hack.

user48884: The recommended way is to use the -connect option. You can do -connect=0 or -noconnect (they mean the same thing) and Bitcoin Core will not try to automatically connect to any other node.

59319: <p>Suppose I make a locked wallet with 50000 pre-generated addresses.</p>

<p>As long as I researched, <strong>only way I can collect those 50000 addresses using RPC and "getnewaddress"</strong>. Feel free to correct me.</p>

<p>I understand this will took several hours or days, so I can set this up on some VPS and let it run.</p>

<p>For this I do not need blockchain to be synchronized.</p>

<p>How can I start bitcoind without blockchain synchronization?</p>

<p>I am thinking about "connect" option or testnet, but both looks like a hack.</p>
 48884: <p>The recommended way is to use the <code>-connect</code> option. You can do <code>-connect=0</code> or <code>-noconnect</code> (they mean the same thing) and Bitcoin Core will not try to automatically connect to any other node.</p>
