user87242: Do bitcoin nodes or miners have ids that can be used to identify them. Like how do we know if it is the same miner that has added several blocks consecutively? Or how can I identify a node uniquely?

user208: Neither nodes nor miners have unique ids at the protocol level, by design.
Some miners however do voluntarily put messages in the blocks they produce, which allows identification (but, those could also easily be faked, if anyone was so inclined).

87242: <p>Do bitcoin nodes or miners have ids that can be used to identify them. Like how do we know if it is the same miner that has added several blocks consecutively? Or how can I identify a node uniquely?</p>
 208: <p>Neither nodes nor miners have unique ids at the protocol level, by design.</p>
<p>Some miners however do voluntarily put messages in the blocks they produce, which allows identification (but, those could also easily be faked, if anyone was so inclined).</p>
