n class="hl-6">settings</span><span class="hl-1"> = {</span><br/><span class="hl-1">  </span><span class="hl-0">apiKey:</span><span class="hl-1"> </span><span class="hl-3">&#39;demo&#39;</span><span class="hl-1">, </span><span class="hl-4">// Replace with your Alchemy API key.</span><br/><span class="hl-1">  </span><span class="hl-0">network:</span><span class="hl-1"> </span><span class="hl-0">Network</span><span class="hl-1">.</span><span class="hl-6">ETH_MAINNET</span><span class="hl-1"> </span><span clas