Mining pools hashing power distribution

Hi, I was looking at the stats of my mining pool (spacepools) and stumbled upon this chart :

image has 43% of the total hashing power in hand… Does anybody find this alarming? Is there a way for the Electroneum team to steer the miners in another direction?


It’s a good point that should probably receive some attention.

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Keep in mind that these stats are not completely accurate. MiningPoolStats reads a pool’s hash rate from the pool’s own API software which might or might not tell the truth.

Network Hash Rate

Moreover, as you’ll see here, the overall network hash rate (used in calculating a pool’s percentage share) is only an estimate of the total hashing power. It is back-calculated by multiplying the current difficulty by the desired block time (120 seconds currently). Since miners don’t need to let the network know about their existence until they’ve successfully mined a block, there is no way to know the exact total hash rate at any point in time. There might be hundreds of ASICs mining solo or mining on a small local pool who only mine a block once every few days and whose hashing power contribution therefore gets lost in the mix.

The Odds of an Attack

Considering that the figures on MiningPoolStats are indeed correct, for a pool to be able to launch an attack it needs to maintain at least a 51% lead for an extended period of time and be lucky enough to solve a couple of blocks in a row. Major exchanges like Cryptopia or Kucoin require at least 12 blocks for confirmation of a deposit, which translates to 24 minutes on average. So a pool has to maintain 51% of hashing power for 24 minutes and be lucky enough to solve 12 blocks in a row faster than the rest of the network can do it, to be able to make unautorhized changes to the blockchain (should they choose to act maliciously in the first place).


Given all these odds to overcome, an unfortunate stroke of luck on the attacker’s part means a 51% always remains a possiblity. This article on CCN gives 4 defences against such an attack, including:

  • Asking major exchanges to temporarily increase block confirmation times
  • Have miners boycott the pool by moving to a new pool (after all, individual ASIC owners would want to prevent a 51% attack to safeguard their own investments, and would therefore move to a smaller pool).
  • Launching a DDOS attack on the 51% pool and bringing down their servers.
  • Forking to introduce a software tweak that simply ignores orphan chains (alternative chains shorter than the current longest one) that have diverted from the main chain for a considerable amount of blocks, with some checks involving the amounts and priorities of transactions on each chain.

Wow thanks for claryfying for me now i see that its not so big problem. I created in history this post… ETN POS vs. POW (Banking the unbanked) - #6

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Sounds a lot less alarming after this explanation! Thanks for the post.

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They now show 50% : Maybe someone on the team should be looking into that even though the readings may be off a little it’s growing at a high daily rate.

I wonder why it’s so high on a pool taking 3%…

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Right now they are at 69% is it not risky? :cold_face:

Maybe yes but dont afraid and please read this CAREFULLY:

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I mean, an attack at this point will ruin everything ETN has accomplished until now and the recovery would be extremely difficult.

Yeah we dont need more problems - but it seems that is new version of ASIC available because the top pool doubled the hash power in less than a week period as you can see here:

ETN team, be careful!

Heey @Rach is this going to be a problem for ETN?

I understand Odds of 51% are very less but being at 69% one can easily unleash an attack.

Online data or others ASIC project to compare you can check HERE (and again read the post from @benjaminoo :

I say in history others for example Bytecoin top25 coin have bigger % and nobady lose it… so i think that only need time to some of the miners get to others pools or they start to sell the ASIc miners to normal people - it seems to me that someone test the new product… But nice to see that we have 10* bigger hash power it means that we have 10 bigger potential and if BCN in in TOP30 we have to be in the TOP3 :slight_smile: :heart:

Yeah, it sureley looks like Bitmain is testing a new model on their pool. My X3s will soon be obsoletes :frowning:

NOOOO man they should atleast wait a year before they come up with a new miner, hopefully its not to expensive to buy this new miner.

Bitmain couldn’t care less. They make tons of money by mining with the new asics for a few months before sending them to the buyers.

LOL I’m guessing Bitmain will sell the first batches for 12000$ And they will go for 1000 kHs