&gt; And in Ethereum the cost of a transaction is determined by its &#x27;gas&#x27; cost, which is based on how computationally expensive the transaction is.<p>Right, but the gas cost cannot be distributed over _all_ nodes, I would think. Which is why I was wondering if it all goes to the node that is the first to announce that it has done a certain computation. Which leads me to wondering how &quot;the first&quot; is determined.<p>I&#x27;ll keep looking around for more info, but I do hope Ethereum people realize that YouTube videos are not the same thing as proper documentation...