This time I'm back with another focus episode where we want to dive into what shares are.
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All right, before we get started, I recently added a little free course to my website that you can sign up for.
feel free to visit my website or the link in the description below to sign up for that
and then you'll just get emails five emails and then another two into your inbox explaining sort
of core concepts if you're interested in that feel free to visit the link below all right so
what are shares to put it very simply right if all the miners in the world are hashing trillions of
times a second who are sending them their hash rate to pools it's going to be very difficult for
pools to verify all of the hash rate and all of the hashes that are being sent to the pool
so the way pools work is that they set a lower difficulty to the actual difficulty that you would
need to hit a block and that's what they count as a share all right so if the actual difficulty
of the bitcoin blockchain is x the pool difficulty will be set below that and it's obviously going to
to be way easier for to reach that number so this is a way for the pools to make sure that you're
actually working and depending on how many shares you are sending to the pool and you also get paid out right so instead of validating all of the hashes that your miner produces or that your fleet produces and having to do all of that work to verify each individual
hash in real time the pools just verify if your hash is meeting the their minimum requirement and
so while you're not actually finding blocks you're finding shares which happens below that
if you look into and i've shared my screen here if you look into your dashboard this is the luxa
dashboard it looks something like this over here you've got the share efficiency in a hundred percent
you will see the active miners this is just some hash rate i bought on on wrigley but what this
means basically is how many of the shares that you are sending are actually being counted and rewarded
because there are also shares that you could send that are stale or invalid shares that the pool
receives but doesn't pay you for one example of a stale share could be one that you send when the
block was already found right so the the pool creates the template that your miner is working
on all right your miner is working on the pool sending shares to the pool the block is found
And then your miner still sends shares that are related to the previous block, which the pool obviously cannot reward you for because it's, quote unquote, useless work.
Yeah.
If you peek down below in the bottom half of the screen, you will see rejected shares, stale shares and shares efficiency.
Right Ideally you want the share efficiency to be 100 which means all of the shares that you sending are valid and being rewarded stale shares you don want those right if you see many of
these that's a problem and then rejected shares are just straight up rejections that the pool makes
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And without further ado, let's get back to it.
So the question beckons, what's the difference between a stale share and an invalid share
or a rejected share?
Rejected shares are exactly that.
They are invalid and stale shares are shares that are sent too late.
Now, the next question is, okay, what causes these rejected shares?
One problem could be firmware issues, right?
If the firmware on the device is not working properly, it can lead to shares that are for
some reason not valid and don't have a chance to be a valid answer to finding a block or
a valid hash.
With some ASIC models, you will find this as well, right?
If they come out of the box and some ASIC models just end up producing faulty shares or faulty hashes that can then not be counted to the pool Because again the pool can only pay you for shares that could have been a valid solution to a block
or a valid block solution that then the pool gets paid out for.
Latency can also be an issue.
There's a lot of data being sent between your mine and the pool server.
And if the latency is too big or too long in that sense,
then that means you're more likely to send work that is invalid and therefore rejected.
Temperature also works. So it's all within the ASIC, right? If the firmware is not working
properly, or there's some fault in the device configuration or in the model type, if the ASICs
are running too hot, they can calculate invalid shares as well, or invalid hashes turn into shares
that are then being rejected by the pool. So that's why it's important to keep your ASICs cool
for a long long time and so overall you want to make sure that you run a very clean smooth operation
to make sure that the number of invalid shares and therefore rejected shares stays as close to zero
as possible currently in the new year i'm heavily advocating for hydro hosting to improve the
financial and physical lifespan of the machine this also has to do with keeping a machine cool
and running it smoothly in a well-maintained data center if you want to learn more about that or
interested in hosting a hydro miner feel free to reach out i hope you learned something new
all the best for 2026 see you next time