<p>Found the explication of the AURA algorithm in this doc : <a href="https://arxiv.org/pdf/1805.03490.pdf" rel="nofollow noreferrer">https://arxiv.org/pdf/1805.03490.pdf</a></p>

<p>Pages 24 -> 26</p>
How authority in Parity Proof of Authority chain choose to mine
<p>I implemented a Parity Proof of Authority private chain, running 2 authority nodes and 3 users nodes.</p>

<p>I managed to credit ether in the users nodes, and with one of the user node, i made a transaction.. and it worked !</p>

<p>The thing is, I don't understand how the authority mined this transaction, since they have to validate it, but how can they judge if the transaction has to be mined or not ? </p>

<p>I hope that I have been clear enough :)</p>