user61042: We run our own nodes to verify transactions for our store and I was wondering what will be the downsides to me running a pruned node? I read they can fully verify a transaction so I'm not too sure why I need a full copy of the blockchain.

user208: 
Will running a pruned node make my store less secure?

No, not at all.

I was wondering what will be the downsides to me running a pruned node?

With a pruned node you cannot:

Handle (extremely) deep reorganizations (which are in theory possible but in practice would indicate a very serious problem with Bitcoin's security assumptions).
Serve old blocks to other nodes.
Rescan for old transactions that may affect your wallet after importing an old address/key.


I'm not too sure why I need a full copy of the blockchain.

You generally don't, apart from the cases listed above.

61042: <p>We run our own nodes to verify transactions for our store and I was wondering what will be the downsides to me running a pruned node? I read they can fully verify a transaction so I'm not too sure why I need a full copy of the blockchain.</p>
 208: <blockquote>
  <p>Will running a pruned node make my store less secure?</p>
</blockquote>

<p>No, not at all.</p>

<blockquote>
  <p>I was wondering what will be the downsides to me running a pruned node?</p>
</blockquote>

<p>With a pruned node you cannot:</p>

<ul>
<li>Handle (extremely) deep reorganizations (which are in theory possible but in practice would indicate a very serious problem with Bitcoin's security assumptions).</li>
<li>Serve old blocks to other nodes.</li>
<li>Rescan for old transactions that may affect your wallet after importing an old address/key.</li>
</ul>

<blockquote>
  <p>I'm not too sure why I need a full copy of the blockchain.</p>
</blockquote>

<p>You generally don't, apart from the cases listed above.</p>
