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Even in the event that an attacker gains more than 50% of the network's
computational power, only transactions sent by the attacker could be
reversed or double-spent. The network would not be destroyed.
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Peter R
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April 15, 2014, 06:44:21 PM |
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Thank you for sharing your work, Kirill. I think it was a good attempt to outline the bitcoin valuation problem and then summarize current thinking on this topic. I liked how you used the Quantity Theory of Money, but I noticed that your tables only consider velocities down to 5. If bitcoin continues to act more as a store of wealth than as a medium of exchange, is it not possible to see velocity fall below unity? I'd like to see a comparison to empirical data for the "velocity" of gold, especially over history. I expect gold's velocity has remained below unity since the advent of fiat, but I think it's possible that it has always moved slowly. Here is my best attempt at calculating bitcoin velocity, BTW: Another valuation theory you may find useful is the Metcalfe Value model discussed here: https://bitcointalk.org/index.php?topic=572106.0
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Peter R
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April 15, 2014, 06:54:37 PM |
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I also think this chart is misleading. Take your comparison to off-shore tax haven funds. I think what you mean is "what would be the value of 1 BTC if the bitcoin market cap was equal to the value of funds store in off-shore tax havens." But what seems to be implied from the chart is the valuation that would result if all that money flowed into bitcoin (the word "replaces" implies this). If $20 trillion flowed into bitcoin, its market cap would be a lot greater than $20 trillion!
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eXSn (OP)
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April 15, 2014, 06:59:33 PM |
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The velocity number in the formula is constrained to the BTC used within transactions and not the BTC used as store of value, which would heavily decrease the number. I'd guess it would be closer to 10-25 range. Additionally, any coins lost would permanently skew velocity down. Parsing the blockchain also presents a lot of problems because not all transactions, especially large ones that skew network statistics, have any value. Bitstamp might modify their wallet management systems and redistribute 500,000 BTC 100 times. I avoided bitcoin days destroyed for this reason.
I'll definitely check out Metcalfe Value. Thanks for the feedback!
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eXSn (OP)
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April 15, 2014, 07:00:42 PM |
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I also think this chart is misleading. Take your comparison to off-shore tax haven funds. I think what you mean is "what would be the value of 1 BTC if the bitcoin market cap was equal to the value of funds store in off-shore tax havens." But what seems to be implied from the chart is the valuation that would result if all that money flowed into bitcoin (the word "replaces" implies this). If $20 trillion flowed into bitcoin, its market cap would be a lot greater than $20 trillion! The chart is misleading, I included it as an example of improper valuation used in media
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dogechode
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April 15, 2014, 07:01:19 PM |
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based on that chart - what reserve currency are you referring to?
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Peter R
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April 15, 2014, 07:06:32 PM |
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The chart is misleading, I included it as an example of improper valuation used in media Sure, but you didn't really explain the issues here. It is valid to make valuation estimates by comparing the bitcoin market cap to the gold market cap (or to tax haven funds). These comparisons are useful. That's not what is wrong with the chart, however.
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Peter R
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April 15, 2014, 07:11:29 PM Last edit: April 15, 2014, 07:23:29 PM by Peter R |
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The velocity number in the formula is constrained to the BTC used within transactions and not the BTC used as store of value, which would heavily decrease the number. I'd guess it would be closer to 10-25 range. Additionally, any coins lost would permanently skew velocity down. Parsing the blockchain also presents a lot of problems because not all transactions, especially large ones that skew network statistics, have any value. Bitstamp might modify their wallet management systems and redistribute 500,000 BTC 100 times. I avoided bitcoin days destroyed for this reason.
I'll definitely check out Metcalfe Value. Thanks for the feedback!
Fair response, as your method attempts to separate "active" from "inactive" bitcoins. I think you should make your tables clear, however, and call it "Velocity of Active Bitcoins" as opposed to just "Velocity." I'd still like to see historical data on gold velocity. I expect the same phenomenon happened in pre-fiat times: the rich dukes had vaults of "inactive gold" while middle-class merchants traded "active" gold at a much higher velocity. It would be very interesting to know the ratio of inactive/active gold over history and the corresponding velocity. EDIT: I guess there is also a straightforward mapping between "velocity" and "velocity of active bitcoins," that just depends on velocity and the percentage of bitcoins that remain inactive, correct?
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eXSn (OP)
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April 15, 2014, 07:47:33 PM |
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The chart is misleading, I included it as an example of improper valuation used in media Sure, but you didn't really explain the issues here. It is valid to make valuation estimates by comparing the bitcoin market cap to the gold market cap (or to tax haven funds). These comparisons are useful. That's not what is wrong with the chart, however. Gold doesn't have value as a payments network. I discuss in the paper why it's not an appropriate comparable. You can, however, factor it as a % of BTC outstanding to remove from Active Coins. The velocity number in the formula is constrained to the BTC used within transactions and not the BTC used as store of value, which would heavily decrease the number. I'd guess it would be closer to 10-25 range. Additionally, any coins lost would permanently skew velocity down. Parsing the blockchain also presents a lot of problems because not all transactions, especially large ones that skew network statistics, have any value. Bitstamp might modify their wallet management systems and redistribute 500,000 BTC 100 times. I avoided bitcoin days destroyed for this reason.
I'll definitely check out Metcalfe Value. Thanks for the feedback!
Fair response, as your method attempts to separate "active" from "inactive" bitcoins. I'd still like to see historical data on gold velocity. I expect the same phenomenon happened in pre-fiat times: the rich dukes had vaults of "inactive gold" while middle-class merchants traded gold at a much higher velocity. It would be very interesting to know the ratio of inactive/active gold over history and the corresponding velocity. I'll check it out but I'm not sure the concept of velocity existed that far back lol Maybe if they recorded GDP and tracked the monetary base it could work.
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Peter R
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April 15, 2014, 07:55:05 PM |
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I'll check it out but I'm not sure the concept of velocity existed that far back lol Maybe if they recorded GDP and tracked the monetary base it could work.
I looked into it a month ago and found this: http://www.complementarycurrency.org/ccLibrary/Mayhew_1995_Population%20money%20supply%20and%20velocity.PDFIt claims that velocity of money in ancient times was hovering between 3 and 10 between 1300 and 1700 in England. I wasn't convinced however that they had a good way to estimate the "inactive gold" and thought maybe some powerful families had a lot more than the authors assumed. Fascinating stuff.
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Peter R
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April 15, 2014, 08:04:03 PM |
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The chart is misleading, I included it as an example of improper valuation used in media Sure, but you didn't really explain the issues here. It is valid to make valuation estimates by comparing the bitcoin market cap to the gold market cap (or to tax haven funds). These comparisons are useful. That's not what is wrong with the chart, however. Gold doesn't have value as a payments network. I discuss in the paper why it's not an appropriate comparable. You can, however, factor it as a % of BTC outstanding to remove from Active Coins. Historically it did have a sort of "payment network." Comparing the total value of all gold reserves (either now or at some point in history) to the potential value of all bitcoins is a useful comparison. How could this not be useful? I'm not saying that such a comparison will necessary be an accurate predicator or the best predicator for bitcoin, but to say that it is not an appropriate comparison does not make sense.
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eXSn (OP)
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April 15, 2014, 08:51:30 PM |
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Its definitely something good to look at but the way analysts and media are translating it to potential bitcoin price as of now makes no sense.
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eXSn (OP)
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April 22, 2014, 06:14:00 PM |
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Anyone else have feedback?
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