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Bitcoin Mining Alone Could Raise Global Temperatures Above Critical Limit By 2033 (vice.com)

dmoberhaus writes: Researchers have found that if Bitcoin is adopted at rates similar to technologies like credit cards, its energy consumption could increase global temperatures by 2C in just 16 years. This is well beyond the limit of catastrophic climate change proposed by the UN. Motherboard spoke to an expert on Bitcoin and energy about the study's implications.

34 of 287 comments (clear)

  1. Seems to be a flaw with all proof of work systems by dasunt · · Score: 4, Interesting

    Off the top of my head, cryptocurrencies that require proof of work seem to all suffer from this flaw. Work is energy, energy has the side effect of global warming with our current grid. Any proof-of-work system that doesn't require a large amount of energy is going to result in a massive influx of new coins being mined, causing a large amount of inflation.

    A few possible solutions would be:

    • Use a cryptocurrency system that (a) doesn't require proof of work and (b) whatever it does require is not energy intensive.
    • Technological advancements make carbon-neutral cheaper than fossil fuels, to the point that burning coal for electricity makes no more sense than burning whale blubber for electricity.

    Any other thoughts?

  2. One huge unrealistic assumption. by SuricouRaven · · Score: 4, Insightful

    Bitcoin cannot be adopted at rates similar to credit cards, because the network is incapable of maintaining reasonable performance under such a load. It's struggling already.

    Bitcoin, from a technical perspective, actually rather sucks. It's one of the first blockchain currencies, and as such it does not incorporate the performance-boosting refinements that later currencies introduced. It's just like a lot of other technical standards: Once good-enough is established, it's very hard for even a superior technology to replace it. That's why we're still using MP3 and JPEG.

  3. Re:Just a Hypothetical by Edward+Nardella · · Score: 2

    The lightning network is a thing and has the potential to not only reduce energy consumption but also increase capacity.

    --
    My sig doesn't address Anons, sigs aren't visible to them.
  4. Re:Seems to be a flaw with all proof of work syste by Anonymous Coward · · Score: 3, Funny

    I hereby declare the existence of Twitcoin

    I get that cryptocurrencies typically have coin in their name, but in this instance, I think BrettBucks is more appropriate. ;)

  5. Re:Seems to be a flaw with all proof of work syste by olsmeister · · Score: 2

    One unit of work consists of converting 1 ton of carbon from our atmospheric CO2 into a solid form

  6. xkcd: Extrapolating by galabar · · Score: 3, Funny
  7. Incorrect mathematics by mysidia · · Score: 5, Insightful

    We randomly sampled blocks mined in 2017 until their total number of transactions were equal to the projected number of transactions, then we added the CO2e emissions from computing such randomly selected blocks. The approach was repeated 1,000 times.

    They are assuming that The number of blocks mined in 2017 is efficient for the number of transactions and the
      Number of blocks to be mined is proportional to the number of transactions --- More transactions won't result in larger blocks,
    and they ignore innovations that are being adopted like SegWit and Lightning.

    Especially with the ongoing adoption of the Lightning Network; that is not the case --- 2017 of all years is a bad reference year for predicting future growth - expect more transactions with future blocks; If massive transaction volume increases occur again, expect those on the network to eventually agree that a larger block size and other scaling measures are appropriate --- which will result in greater efficiencies or economies of scale with higher transaction volumes.

    The projection the researchers are making is really an uninteresting one: the question their study answers is more like..... What if no changes occurred to the Bitcoin network/protocol for improved scaling, and the predominant way transactions were batched and pooled since 2017 continues indefinitely AND Bitcoin adoption accelerates as projected by the model.

    1. Re:Incorrect mathematics by JesseMcDonald · · Score: 3, Interesting

      They are assuming that The number of blocks mined in 2017 is efficient for the number of transactions and the Number of blocks to be mined is proportional to the number of transactions --- More transactions won't result in larger blocks

      It's clear that these researchers don't understand Bitcoin at all if they think that there is any relationship between the number of transactions and the number of blocks mined. The difficulty is adjusted to ensure that one new block is mined every 10 minutes, on average. That figure is independent of both the number of transactions and the size of the block. Larger blocks and out-of-band systems like the Lightning Network increase the number of transactions which can be processed without altering the total energy used for mining.

      The energy cost of mining is driven by competition over block rewards and transaction fees; of the two, fees are currently insignificant compared to the block rewards (<1% of mining revenues). The block rewards halve every four years. Right now the reward is at 12.5 BTC @ 6250 USD/BTC, so the breakeven point for mining is about $80k per block; any miner spending more than that amount per mined block on hardware and electricity is losing money. In 2020 the reward will drop to 6.25 BTC; in 2024 it will be reduced again, to $20k per block. The long-term trend is thus for the energy cost of (profitable) mining to decrease over time, at least until transaction fees start to exceed block rewards.

      --
      "The state is that great fiction by which everyone tries to live at the expense of everyone else." - Bastiat
  8. Geeks by kackle · · Score: 3, Funny

    The geeks shall incinerate the earth.

  9. Stop lying by DogDude · · Score: 2, Insightful

    Climate change is not an "absurd fantasy", you fucking liar. It's scientific fact.

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    1. Re:Stop lying by DogDude · · Score: 2

      The climate models only work when man-made inputs are included. Without man-made inputs, the climate models are very different (ie: wrong after ~1970).

      --
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    2. Re:Stop lying by Junta · · Score: 4, Informative

      coloration

      Say what now?

      In the interest of answering this as if it were serious, it is true that the gold standard of scientific endeavor is full-scale experiments with controls and variables. However there are plenty of scientific efforts that have to make due with at best reduced scale experiments (geology, astronomy, psychology, probably most scientific efforts). We do know at small scale the products of combustion constitute a gas that insulates heat but allows for light. We also know that the increase of this reaction correlates quite nicely with the retention of thermal energy. While the scale is such that we can't *prove* it, the simplest explanation is that there is a causative relationship.

      Now let's weigh the theories by consequence of acting *incorrectly* given the two scenarios:
      -Global warming is not man made, but we curtail emissions anyway: We reduce our consumption of a non-renewable resource that we needed to reduce anyway.
      -Global warming turns out to be man made, but we fail to curtail emissions and make it exponentially worse: Massive famine and violent storms destroy so much of our society and even potentially kill us off completely.

      So not only is man-made global warming the simplest explanation that fits the data, it's also the one that is by *far* the safest bet.

      --
      XML is like violence. If it doesn't solve the problem, use more.
    3. Re:Stop lying by DogDude · · Score: 3, Informative

      You're 100% wrong (or simply lying). They're pretty damned accurate, actually. If you have any real interest, you should look into the IPCC. Here's a high level overview: http://report.ipcc.ch/sr15/pdf...

      --
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    4. Re:Stop lying by DogDude · · Score: 4, Informative

      Science doesn't depend on anything in particular to be true. That's how science works. We try to figure out what is true. Nobody is paying scientists to prove something or another.

      That's not how scientific models work. If models can fit the facts, then the models are effective. Climate models absolutely do fit the facts.

      Did you not learn what "science" is in grade school? How can somebody be so clueless about something as fundamental as what science is?

      --
      I don't respond to AC's.
    5. Re:Stop lying by Capsaicin · · Score: 2

      Roughly 10 years ago a high profile Australian scientist did a TV interview and stated that it may never rain again in the Australian outback [sic].

      That's not actually the truth is it? (Though I'm liable to be convinced otherwise by a citation from a reliable source).

      I'm presuming you are talking about Tim Flannery. Here is the transcript of that infamous TV interview. So here is what he actually said, that has widely been quoted as "it will never rain again":

      ... since 1998 particularly, we've seen just drought, drought, drought, and particularly regions like Sydney and the Warragamba catchment - if you look at the Warragamba catchment figures, since '98, the water has been in virtual freefall, and they've got about two years of supply left ...

      Well, you can't predict the future; that's one of the things that you learn fairly early on, but if I could just say, the general patterns that we're seeing in the global circulation models ... are saying the same sort of thing that we're actually seeing on the ground. ...

      We'll know probably within two or three years, I suppose, how this is going to play out, particularly for Sydney, because its water supply is limited to that sort of scale, but it is my fear that the new weather regime is going to be a much drier one, and while we may get the odd good rainfall event, they're going to be much less frequent than in the past, and we'll just be in a different climatic regime ... the worst-case scenario for Sydney is that the climate that's existed for the last seven years continues for another two years. In that case, Sydney will be facing extreme difficulties with water ...

      So "roughly 10 years" later, how is the drought situation in Eastern Australia panning out ... this even from the Murdoch press, speaks to its seriousness.

      --
      Better to be despised for too anxious apprehensions, than ruined by too confident a security. --Edmund Burke
    6. Re:Stop lying by LynnwoodRooster · · Score: 2

      It actually happened. CNN aired footage of people in Palestine celebrating as well.

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
  10. Re:Seems to be a flaw with all proof of work syste by amicusNYCL · · Score: 2

    Technological advancements make carbon-neutral cheaper than fossil fuels, to the point that burning coal for electricity makes no more sense than burning whale blubber for electricity.

    That's the point. As a society, our energy needs are going to continue to increase and it doesn't matter where that need comes from, per se. The point is to make energy production cleaner and less harmful to the planet. The major places where our energy is being used isn't the point, the point is to generate energy in a cleaner way. We aren't going to use less energy, we only need to generate it cleaner.

    --
    "Our two-party system is like a bowl of shit looking at itself in a mirror." - Lewis Black
  11. You're lying by DogDude · · Score: 4, Insightful

    You're simply lying about climate change. It's 100% real and man made. The climate models that predict the change only work when man-made interference is included. You have no idea what you're talking about. There have been hundreds of thousands of studies that have been included just in the IPCC's reviews, so far. I have no idea what one study you're talking about, and I'm sure you don't, either.

    --
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    1. Re:You're lying by medv4380 · · Score: 2
      The video is an interview of Michael Mann, and is his defense of the subject we're talking about. You have your free speech to use an Ad Hominem argument, but that doesn't make it right. The interview serves as a way of Mann speaking for himself, and me not putting words in his mouth. Of course, Mann isn't on that study, because the criticism is why are they cherry picking that data out of their conclusions. You can go after credentials and commit expert seeking fallacies rather than actually debate. It wont change the fact that, as the study cites

      No current tree ring (TR) based reconstruction of extratropical Northern Hemisphere (ENH) temperatures that extends into the 1990s captures the full range of late 20th century warming observed in the instrumental record. Over recent decades, a divergence between cooler reconstructed and warmer instrumental large-scale temperatures is observed.

      This isn't one study. Rather it is a large collection of studies. All pointing to a contradiction between the Temperature they calculated for North America, and Tree Ring reconstructions. Their Hypothesis is to try to justify dismissing the contradiction entirely. My Theory is that the Tree reconstruction is mostly correct barring drought conditions, and that they processed the Temperature incorrectly. I can process the temperature more or less correctly, and get good agreement with the data. I can even process the rain data and explain a few minor divergences using droughts. Namely this one: Texas Drought

    2. Re:You're lying by medv4380 · · Score: 2

      I've linked to two datasets from NOAA, and you've admitted to being too incompetent to read them or talk about the data. This particular subject is even in the IPCC reports that have come out under Divergences. Also known as justifications for cherry picking the evidence. A more capable person would have focused the argument. Instead, you've focused on a straw man ad hominem argument calling Michael Mann a conspiracy theorist because he did an interview posted on youtube and became committed to historical denialism over one of the more epic droughts in US history because it's easy to point to Wikipedia. If this were a formal debate that would be frowned upon, but your behavior would have cost you the debate long before that. Hard to imagine anyone seeing your argument not damaging everything about your side. Unfortunate, I can't imagine you arguing better.

    3. Re:You're lying by jwhyche · · Score: 3

      This is part of the problem with both climate change believers and deniers. Extremist on both sides have taken lead on the issue. An this makes both sides look like they are infested with loons. Of course having Al Gore on the climate change band wagon didn't help.

      Here is something both you climate change believer and deniers can believe. Fossil fuels are poisoning the planet and are a limited resource. The sooner we are off them the better. So eventually we will ether run out of them or they will make the planet unlivable. Ether way civilization will end. Better to do something now than wait till its to late.

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    4. Re:You're lying by jwhyche · · Score: 2

      In my option Al Gore has probably done more harm than good. He flies to climate conferences in private jets and rumor has it his house consumes as much electricity as a small town. I'm not sure I believe that last one but some people do. These 'facts' about Al Gore are often touted in conservative circles and on Foxnews when ever climate change comes up. Unfortunately, these people are the ones running the country right now that get their science from these sources.

      --
      I read at +2. If your post doesn't reach that level I will not see or respond to it.
    5. Re:You're lying by jwhyche · · Score: 2

      But it takes a certain kind of mentality to discredit a global problem due to the actions of a single person

      Read that again while thinking of certain members of congress and a willy wonka escapee .....

      --
      I read at +2. If your post doesn't reach that level I will not see or respond to it.
  12. Better than that, AI is doomed by SuperKendall · · Score: 2

    So you're telling me humans have a chance against AI?

    So humanity has developed great UI's at this point, and what we have seen is that all intelligence, artificial or otherwise, falls into the same trap - arguing about politics online.

    What hope did AI ever have to rise above this? None, I say. AI was built on learning networks and just like us they will simply learn to argue rather than actually act.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  13. Re:Just a Hypothetical by GameboyRMH · · Score: 3, Interesting

    And let's not forget that there is zero, zilch, no advantage to using cryptocurrencies for anything but crimes. Non-blockchain payment services are at least as good, sometimes much better for anything where you're OK with your payments being traceable and visible to law enforcement and financial regulators. Sometimes you can even enhance privacy with traditional payment systems using gift cards.

    Cryptocurrencies could enhance privacy in a few legal purchases, but it's certainly not worth the environmental cost alone, to say nothing of how it empowers criminals. This is a technology that should and must be left to die.

    --
    "When information is power, privacy is freedom" - Jah-Wren Ryel
  14. Just imagine ... by surfcow · · Score: 2

    Imagine someone invented a method
    of converting Terawatts electricity and human intellect
    into a symbolic currency with no intrinsic value,
    with no link to any material asset,
    not backed by any government (except North Korea),
    and which you can not actually spend at the local store.

    Oh, wait ...

    Generates pollution without generating value.

    Exxon should love it.

  15. Re:Bueno! Excellente' by Joce640k · · Score: 4, Informative

    So you deny global warming, and can't see any flaws in the current financial system that bitcoin can solve.

    You're a closed-minded idiot. Got it.

    And if you don't know that a single Bitcoin transaction needs 250kWh of power then you haven't been paying attention.

    PS: At only five or six transactions per second it's not going to solve any of the major flaws in the financial system, either.

    --
    No sig today...
  16. Re:Bueno! Excellente' by Dasher42 · · Score: 4, Insightful

    I know insecure people like to imagine the human race as being so technologically advanced that we could affect the entire planet, but we aren't. AGW is crazy talk by crazy people and not a shred of evidence has even been shown to link humans to anything of the sort.

    In the meantime, the refrigerants that have already caused huge holes in the ozone layer are also some of the worst of the greenhouse gasses, we've demonstrably burned hundreds of millions of years' worth of fossil fuels in a few centuries that would have remained sequestered in the ground indefinitely in anything short of a Permian-Triassic level extinction event, and the oceans are already acidifying enough from the CO2 that shellfish are already impacted.

    You could just go ask around in Alaska, since the polar regions are warming at almost twice the rate of the rest of the globe.

    But first, you have to look at why you're willfully living in a fact-free alternate reality.

  17. Re:Bueno! Excellente' by Kaenneth · · Score: 2

    Greenpeace caused Global Warming.

  18. Yes, tens of thousands of studies by DogDude · · Score: 4, Informative

    Yes. Tens of thousands. The most recent one, alone, looked at 9200 different studies (https://en.wikipedia.org/wiki/IPCC_Fifth_Assessment_Report).

    --
    I don't respond to AC's.
  19. Re: Bueno! Excellente' by Anonymous Coward · · Score: 2, Informative

    You assume wind and solar power people are not also similarly motivated.

    We already see wind power companies take a bunch of government money, prop up a bunch of windmills, declare bankruptcy (claiming they didn't foresee natural gas prices killing their business model), and then leave a bunch of broken and rusting windmills for the government to deal with.

    We see electric car companies do the same, take a bunch of money, produce nothing, declare bankruptcy, and walk away from the factories filled with toxic metals and chemicals.

    Nuclear power has proven itself to be low CO2, low environmental impact, reliable, and safe.
    http://cmo-ripu.blogspot.com/2018/08/why-i-favor-nuclear-power.html

    If you cannot accept nuclear power as part of the global warming solution then don't be surprised if people cannot accept global warming as a real threat. Whatever threat nuclear power holds, be it another Chernobyl or Fukushima, or radioactive waste that won't decay for millions of years, does not compare in the least to what global warming threatens. If you fear nuclear power more than global warming then you have "scientifically" proven global warming to be no real threat at all, because nuclear power is not a real threat to anyone.

  20. Re: Bueno! Excellente' by Anonymous Coward · · Score: 2, Interesting

    Solar and wind enthusiasts talk about numbers of windmills erected and numbers of solar panels installed. But they never talk about the actual CO2 reduction benefit. Look at Germany, the great leader of the industrialized world, installing shitloads of wind and solar with no CO2 reductions to show for it. What good is celebrating a wind generator installation when it is barely helping? Its all symbolism for the nimble minded.

    Now look at France, decades ahead of Germany with half the CO2 emissions, simply because they were smart to go nuclear many years ago.

    Anti nuke, wind and solar only idiots are as bad as climate change deniers. They deny the necessary role of nuclear.

  21. Re:Bueno! Excellente' by bobbied · · Score: 2

    Hey, you do know that the ozone hole issue has been largely addressed right?

    We stopped manufacturing and using the CFC's mostly responsible for this more than a decade ago and as they have been removed from aerosol cans and most industrial and HVAC use the ozone hole has stopped getting bigger and has been steadily recovering since about 2000.

    --
    "File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
  22. Re:Bueno! Excellente' by Your.Master · · Score: 4, Insightful

    The point was that humanity was verifiably able to impact the entire planet by accident. The assertion of the GGP is that it's impossible in principle for humans to create a global environmental problem.