user140404: I've managed to find the first-ever segwit transaction, which is also the first-ever P2WPKH transaction:
dfcec48bb8491856c353306ab5febeb7e99e4d783eedf3de98f3ee0812b92bad
However I'm having trouble finding the first-ever P2WSH transaction. Help appreciated!!

user140404: I found it, using Blockchair as a free and easy search tool.
The first transaction sent to a P2WSH address is this one:
461e8a4aa0a0e75c06602c505bd7aa06e7116ba5cd98fd6e046e8cbeb00379d6
It occurred in the same block as the first P2WPKH transaction.
At the time of writing, it still has not been spent.
The first transaction that has spent funds from P2WSH is this one:
cab75da6d7fe1531c881d4efdb4826410a2604aa9e6442ab12a08363f34fb408
It occurred a couple days later.

140404: <p>I've managed to find the first-ever segwit transaction, which is also the first-ever P2WPKH transaction:</p>
<p><a href="https://mempool.space/tx/dfcec48bb8491856c353306ab5febeb7e99e4d783eedf3de98f3ee0812b92bad" rel="nofollow noreferrer">dfcec48bb8491856c353306ab5febeb7e99e4d783eedf3de98f3ee0812b92bad</a></p>
<p>However I'm having trouble finding the first-ever P2WSH transaction. Help appreciated!!</p>
 140404: <p>I found it, using Blockchair as a free and easy search tool.</p>
<p>The first transaction sent to a P2WSH address is this one:</p>
<p><a href="https://mempool.space/tx/461e8a4aa0a0e75c06602c505bd7aa06e7116ba5cd98fd6e046e8cbeb00379d6" rel="nofollow noreferrer">461e8a4aa0a0e75c06602c505bd7aa06e7116ba5cd98fd6e046e8cbeb00379d6</a></p>
<p>It occurred in the same block as the first P2WPKH transaction.</p>
<p>At the time of writing, it still has not been spent.</p>
<p>The first transaction that has spent funds from P2WSH is this one:</p>
<p><a href="https://mempool.space/tx/cab75da6d7fe1531c881d4efdb4826410a2604aa9e6442ab12a08363f34fb408" rel="nofollow noreferrer">cab75da6d7fe1531c881d4efdb4826410a2604aa9e6442ab12a08363f34fb408</a></p>
<p>It occurred a couple days later.</p>
