Toxic2040
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June 15, 2018, 05:02:31 PM |
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+1 WOsMerit Anti-paywall measures activated.. University of Texas at Austin finance professor John Griffin and graduate student Amin Shams just posted a paper suggesting that cryptocurrency prices are manipulated. The paper has received a great deal of attention in the media, but there is a disconnect between the paper and the press coverage in terms of quantification.
For example:
The authors suggest the cryptocurrency exchange Bitfinex buys bitcoin with another cryptocurrency -- tether -- to push up Bitcoin prices. How much? Four basis points per 100 bitcoin. With Bitcoin at $10,000, for example, that means Bitfinex spends $1 million to push the price up to $10,004. The authors assert that the purchases are not random in that they occur more often after Bitcoin prices have fallen. How much? After the biggest drops in Bitcoin price, 1 Bitfinex buys 72 extra bitcoin. More than 100,000 Bitcoin frequently trade in an hour, and often much more during periods of high volatility. The authors examined the 87 hours with the largest flows of bitcoin and tether and found that the hours following them accounted for 50 percent of the "meteoric rise" in bitcoin. That sounds impressive, but the rise over the period discussed was from about $1,000 to $8,000. The authors used compounded returns, which mean returns in those 87 hours averaged 1.2 percent. For the S&P 500 Index, a 1.2 percent move is a big hour. For Bitcoin, not so much.
To an academic, it's often more important that a result have “statistical significance,” which is to be clearly something other than random noise, than “practical significance,” which is to be of a size that would interest a trader or regulator. But, here too, the results are less than impressive.
The four basis-point increase in Bitcoin prices explains less than 1 percent of the variance. While it technically meets normal standards of statistical significance, given the guesswork the authors had to do to collect data and the complexity of the analysis, I consider it more likely to be noise than signal. The authors have only 20 data points to support the claim of 72 extra Bitcoin, and they fit them using a model with six parameters. The usual rule of thumb is you want 30 observations per parameter to rely on the results, and that's not taking into account the data and complexity issues mentioned above. The 50 percent "meteoric rise” claim is declared significant because the authors picked 10,000 sets of 87 hours at random, and none of them averaged a 1.2 percent return for Bitcoin. That is indeed strong evidence that the 87 hours following the hours with the largest Bitcoin and tether flows are not random. But we already knew they weren't random, they were times of high transaction volume, which would be expected to have more volatile prices than average, and trading volume was much higher on the upswings than the downswings.
I don't mean to be completely negative on the paper. I've played with the data the authors use, and it is very frustrating. There is a lot of work -- including a lot of guesswork, unfortunately -- to compile numbers that can be used to test hypotheses. The tests themselves are complex. Moreover, it's likely that the phenomena under study are evolving rapidly during the study period. As a result, any conclusions have to be taken as suggestive only. But in areas as little understood as cryptocurrency trading dynamics, even suggestions are valuable. (Full disclosure: I own Bitcoin and other cryptocurrencies.)
I've only touched on the headline claims of the article. There is a lot more substance in it. Some of the claims that got less attention have better support. Anyone seriously interested in these issues should read the paper, not as an authoritative last word, but as a plausible account backed by some data.
I also don't mean to deny that cryptocurrency prices are manipulated. I'm a crypto-believer, and am impressed by the huge amount of honest developer talent and innovative vision improving the crypto code base every day, whether prices are soaring or crashing, more for love than money. That is where I put my faith. But there are plenty of crooks and profiteers as well. It would be extraordinary if some of them weren't trying to manipulate prices -- and worse.
Moreover there are obvious inconsistencies in the complex and novel cryptocurrency markets. That makes it unclear whether behavior is manipulation or rationalization. This paper is a small step in improving our understanding, not an indictment of tether or cryptocurrencies.
This column does not necessarily reflect the opinion of the editorial board or Bloomberg LP and its owners.
Specifically, the paper looked at all three-hour periods from March 1, 2017 to March 31, 2018 and found that after the 5 percent with the largest declines, Bitfinex bought an average of 72 bitcoin in the following hour. -------- Bitcoin Good morning. Cloud pierced. Time to push thru? Actual analysis after coffee? Maybe...still hodling.
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jbreher
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lose: unfind ... loose: untight
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June 15, 2018, 05:18:11 PM |
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Bitcoin isn't fungible anyway.
Yet Segwit drives a trifurcating wedge right through any vestige of fungibility. Three distinct classes of BTC. All with differing security properties. This is novel in Segwit. And I think he was referring to the fact that LN pretty much required segwit.
Well, for some value of 'pretty much' ... (i.e., No, a malleability fix is not required, it merely makes it easier. And Segwit is not the only possible malleability fix. Even if it were, The SegWit Omnibus Changeset bundled a bunch of other crap in with Segwit itself. Lastly, the security-destroying so-called 'soft fork' activation methodology was not required). ... well, for this particular implementation of LN, anyhoo.
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Elwar
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June 15, 2018, 05:19:26 PM |
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I left Germany in 2016
Why did you leave? You found a better place to live? Where did you go? Somewhere crypto&tax friendly ? I thought germany was very crypto friendly ...... Oh no...Berlin maybe, but I was near Frankfurt...the headquarters for the EU and ECB. Germany made bitcoin a "private money" which is all well and good (Germany acknowledges that bitcoin is a currency! Yay!) except now it is essentially considered a foreign currency when it comes to being able to set up an exchange. That comes with all of the legal difficulty that comes with setting up a foreign exchange. That's why there's really no exchange in Germany and localbitcoins was shut out. For me, selling bitcoins as a private individual was fine because it would be like me selling a gold coin or a personal item. I left Germany for that wonderful place called Afghanistan. Not so crypto friendly.
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Karartma1
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June 15, 2018, 05:29:45 PM |
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@jbreher Fine. It's not a fight I want to have here. No need for it. Time will tell if SegWit + LN will work well. I tried, I use and trust Bitcoin as it is now but I know that there's still a lot of work to do. About LN cons as we speak: - Routing kind of sucks; - Channels balancing must be improved; - Peers need to be online to receive txs... But, jbreher, Rome was not build in a day. Use SegWit and LN: need coins? ![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
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realr0ach
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June 15, 2018, 05:30:48 PM |
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I left Germany in 2016
Why did you leave? You found a better place to live? Where did you go? Somewhere crypto&tax friendly ? He lives inside of the ocean until he can afford to build some type of platform that floats on top of it (which he refers to as a "seastead"). He hopes to accomplish this via bitcoin pump and dumps. ![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FNTFcygK.jpg&t=665&c=doECLAJm3BJ1Og)
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V1lpu
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June 15, 2018, 06:08:36 PM |
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FractalUniverse
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June 15, 2018, 06:34:32 PM Last edit: June 15, 2018, 06:50:31 PM by FractalUniverse |
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-------- Bitcoin Good morning. Cloud pierced. Time to push thru? Actual analysis after coffee? Maybe...still hodling. some minor lines, but it will have to break through some soon: ![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fs8.postimg.cc%2Fz6pfdqrcl%2Fbtc.gif&t=665&c=x7_4s-p7Ho2HZA)
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gentlemand
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Welt Am Draht
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June 15, 2018, 07:17:33 PM |
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JayJuanGee
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Self-Custody is a right. Say no to"Non-custodial"
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June 15, 2018, 07:47:32 PM Last edit: June 15, 2018, 08:04:18 PM by JayJuanGee |
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What do you think about Bitcoin not breaking the support 5500€ / 6800$? I'm not very confident that this will be the bottom, there was not enough panic selling and FUD imo! ![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif) Maybe we'll see a break of the support first, then a bull run for new highs can start. I think that you are using the wrong word. Support refers to the bottom and resistance refers to on the way up. I don't think that we can judge, exactly, regarding whether there is going to be a further bottom, merely from the fact that the price is NOT breaking far enough to the upside. So, sometimes if the price floats within a range long enough (let's say between $6100 and $6800) then more of a base could form, but none of this is a given... because if bears are gathering coins, and soon or later gather enough coins to break below support, then the price goes down. We could also get stuck in this price range for 6 months or longer, though that seems like an unlikely set of events. In other words, I don't really know. Surely, it is not a given, even yet, that Doug Polk is going to lose his bet. Maybe 50/50? And, I don't even know if I would lean one way or another to say 49/51 or 51/49... I am surely conflicted, too, but if I were going to error, I would error on the side that the bottom has already been reached (that is only a 1% greater odds - or 2% if we look at the spread). What do you think about Bitcoin not breaking the support 5500€ / 6800$? I'm not very confident that this will be the bottom, there was not enough panic selling and FUD imo! ![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif) Maybe we'll see a break of the support first, then a bull run for new highs can start. I figure that BTC price and Alts etc are going to Yo/Yo at best between 5k and 6k for the next 9 months This particular range does not seem stable to me.. Maybe floating between $7500 and $8500 would be more stable? But what do I know? especially if mt. gox keeps kicking out $125 million of BTC dump the 10th of every month until the surplus of 1.40 billion is gone
Just seems like an overplayed piece of FUD to me. I doubt GOX really has very much of an influence, but surely on the margins GOX is one of the several factors. If we get some more significant FUD, then perhaps more HODLers will be scared into parting with their coins? Perhaps? just the way it is
We don't want to rely too much on one factor or one narrative or that we are somehow locked into consolidation at this point.... of course it could happen.. but I am still leaning towards either the consolidation area being in a higher price range or the other possibility that the price breaks down first, and then returns to this price arena for consolidation.. but it does not seem likely to consolidate here, without some further price movement either up or down, first. that and the fact IF there is a run, seems exchanges always go down or are hacked ..thus driving prices down further
I agree that if there is some meaningful FUD spreading, then that could help for more DOWN from here. buckle up boys and girls it is gonna suck big time
(again, better minds then me prove I'm wrong...please...please...)
brad
Your mind seems just fine, but your level of negativism seems a bit much - like you are shell shocked from 2014/2015, still.. hahahahhaha ![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
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DaRude
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In order to dump coins one must have coins
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I'm not following the whole USDT drama, to me it's just like another alt/shitcoin, i.e. if anything, people would try to escape into BTC when it crashes. Of course it can take down some exchanges, but if you keep your BTC on exchanges thats the risk that you're taking
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gentlemand
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June 15, 2018, 08:11:11 PM |
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I'm not following the whole USDT drama, to me it's just like another alt/shitcoin, i.e. if anything, people would try to escape into BTC when it crashes. Of course it can take down some exchanges, but if you keep your BTC on exchanges thats the risk that you're taking
It may be unfashionable to think it, but I don't really believe there is one any more. Even if at one point it was money out of thin air, and there's no proof either way, they've likely earned it back now. It's going to be a forever mystery I reckon that's rolled out every now and then for a quick scare.
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JayJuanGee
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June 15, 2018, 08:16:49 PM |
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I have. Hence my position as a Segwit skeptic.
I don't see exchanges, devs and users complaining how flawed Segwit it, nobody lost money ore saw critical errors. I only see that bullshit in the Bcash camp. Can you provide me technical arguments/proof why Segwit is 'flawed' ore show it at the Github? All those devs are interested in youre arguments. No. What does that LN to do with Segwit? I'm not following your train of inquiry here. Trying to convince me that you did your homework while you dont even looked at Segwit features.. (Bcash) shit noob. One of the main problems with segwit is that it makes spam attacks on bitcoin more expensive that is why NO LIKIE SEGIE WITTIE!!!! ![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fcdn.shopify.com%2Fs%2Ffiles%2F1%2F0895%2F0864%2Fproducts%2F42-45536657_1024x1024.jpeg%3Fv%3D1451732129&t=665&c=azD9Wa22cYkiig)
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Ludwig Von
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June 15, 2018, 08:20:58 PM |
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I'm not following the whole USDT drama, to me it's just like another alt/shitcoin, i.e. if anything, people would try to escape into BTC when it crashes. Of course it can take down some exchanges, but if you keep your BTC on exchanges thats the risk that you're taking
It may be unfashionable to think it, but I don't really believe there is one any more. Even if at one point it was money out of thin air, and there's no proof either way, they've likely earned it back now. It's going to be a forever mystery I reckon that's rolled out every now and then for a quick scare. It may indeed never get cleared out. But they surely played the most sophisticated scam ever : they played the role of central bank in crypto... . ![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
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gentlemand
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June 15, 2018, 08:23:09 PM |
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It may indeed never get cleared out. But they surely played the most sophisticated scam ever : they played the role of central bank in crypto... . ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) I wouldn't have expected anything less. BFX is truly the cockroach of crypto. It's the pestilence that keeps on pestiling.
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infofront (OP)
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Shitcoin Minimalist
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June 15, 2018, 08:34:19 PM |
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I'm not following the whole USDT drama, to me it's just like another alt/shitcoin, i.e. if anything, people would try to escape into BTC when it crashes. Of course it can take down some exchanges, but if you keep your BTC on exchanges thats the risk that you're taking
It may be unfashionable to think it, but I don't really believe there is one any more. Even if at one point it was money out of thin air, and there's no proof either way, they've likely earned it back now. It's going to be a forever mystery I reckon that's rolled out every now and then for a quick scare. It may indeed never get cleared out. But they surely played the most sophisticated scam ever : they played the role of central bank in crypto... . ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) Damn. They must be run by The Jews® then. /s Edit: I'm adding this quote from Eric Meltzer of INBlockchain because its a slow day here: As a jew, I find the existence of basically unseizable money outside of state control massively comforting. To jews, the state is an unpredictable monster that flips out every century or so. Having the ability to leave without leaving everything behind is key.”
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Ludwig Von
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June 15, 2018, 08:46:36 PM Last edit: June 15, 2018, 08:58:40 PM by Ludwig Von |
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I'm not following the whole USDT drama, to me it's just like another alt/shitcoin, i.e. if anything, people would try to escape into BTC when it crashes. Of course it can take down some exchanges, but if you keep your BTC on exchanges thats the risk that you're taking
It may be unfashionable to think it, but I don't really believe there is one any more. Even if at one point it was money out of thin air, and there's no proof either way, they've likely earned it back now. It's going to be a forever mystery I reckon that's rolled out every now and then for a quick scare. It may indeed never get cleared out. But they surely played the most sophisticated scam ever : they played the role of central bank in crypto... . ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) Damn. They must be run by The Jews® then. /s Edit: I'm adding this quote from Eric Meltzer of INBlockchain because its a slow day here: As a jew, I find the existence of basically unseizable money outside of state control massively comforting. To jews, the state is an unpredictable monster that flips out every century or so. Having the ability to leave without leaving everything behind is key.” What is intrigueing me for some time already is the name of the ceo of finexed and Tether : "Van De Velde". That is so Flemish as can be, so I wonder... . And the jew part, well, let 's see what Roach has to say about it.
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DaRude
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June 15, 2018, 08:59:55 PM |
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I'm not following the whole USDT drama, to me it's just like another alt/shitcoin, i.e. if anything, people would try to escape into BTC when it crashes. Of course it can take down some exchanges, but if you keep your BTC on exchanges thats the risk that you're taking
It may be unfashionable to think it, but I don't really believe there is one any more. Even if at one point it was money out of thin air, and there's no proof either way, they've likely earned it back now. It's going to be a forever mystery I reckon that's rolled out every now and then for a quick scare. Again, so if someone created some airTokens and managed to find someone else to sell their BTC for these tokens, i fail to see how crashing airTokens would effect anyone besides the airToken bag holders (not counting indirect effects of failing exchanges and overall negative publicity from people not capable of differentiating between airtokens and BTC)
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