Jan
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December 05, 2012, 04:27:11 PM |
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To be honest, if there is an internet blackout I believe there are more pressing problems than spending coins. At least for me. However, let's assume that you have a secure hardware device with built-in radio, that allows you to communicate securely (short distance, authenticated communication) with another device of the same kind, and that device does not allow you to export/import private keys. Then you could do multiple secure transactions from device to device for days or months before finally syncing up with the network. This could be useful in areas without mobile coverage, such as most of rural US  Rural Area United States84 percent of the United States' inhabitants live in suburban and urban areas,[3] but cities occupy only 10 percent of the country. Rural areas occupy the remaining 90 percent.
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Mycelium let's you hold your private keys private.
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MoonShadow
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December 05, 2012, 07:06:51 PM |
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That's pretty much what a bitcoincard is supposed to do, but it doesn't have the memory for a full client. An android app could do it using ad-hoc wireless or regular wifi and a piratebox as a hotspot. To be honest, if there is an internet blackout I believe there are more pressing problems than spending coins. At least for me. However, let's assume that you have a secure hardware device with built-in radio, that allows you to communicate securely (short distance, authenticated communication) with another device of the same kind, and that device does not allow you to export/import private keys. Then you could do multiple secure transactions from device to device for days or months before finally syncing up with the network. This could be useful in areas without mobile coverage, such as most of rural US Rural Area United States84 percent of the United States' inhabitants live in suburban and urban areas,[3] but cities occupy only 10 percent of the country. Rural areas occupy the remaining 90 percent.
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"The powers of financial capitalism had another far-reaching aim, nothing less than to create a world system of financial control in private hands able to dominate the political system of each country and the economy of the world as a whole. This system was to be controlled in a feudalist fashion by the central banks of the world acting in concert, by secret agreements arrived at in frequent meetings and conferences. The apex of the systems was to be the Bank for International Settlements in Basel, Switzerland, a private bank owned and controlled by the world's central banks which were themselves private corporations. Each central bank...sought to dominate its government by its ability to control Treasury loans, to manipulate foreign exchanges, to influence the level of economic activity in the country, and to influence cooperative politicians by subsequent economic rewards in the business world."
- Carroll Quigley, CFR member, mentor to Bill Clinton, from 'Tragedy And Hope'
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MoonShadow
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December 05, 2012, 07:15:07 PM |
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That's an interesting map, but it suggests to me that the size of the geographic area that a particular border incloses might have more to do with the diversity of the cross-border Internet connections than government interference. If one were to do the same thing examining individual US states, would the diversity be as high? Also, this map almost cannot include all the pathways, since many of the smaller ones are privately owned by corporations. This is pretty much how tor can puncture the great Internet wall of china, and exactly how we can reasonablely expect that bitcoin might be unstoppable. It's not that those slower connections have to be discovered, it's that someone still knows about them, and deliberately moves to take advantage of them when necessary. EDIT: It's probably got more to do with population than even geographic size. Otherwise Iceland would be much better. |
"The powers of financial capitalism had another far-reaching aim, nothing less than to create a world system of financial control in private hands able to dominate the political system of each country and the economy of the world as a whole. This system was to be controlled in a feudalist fashion by the central banks of the world acting in concert, by secret agreements arrived at in frequent meetings and conferences. The apex of the systems was to be the Bank for International Settlements in Basel, Switzerland, a private bank owned and controlled by the world's central banks which were themselves private corporations. Each central bank...sought to dominate its government by its ability to control Treasury loans, to manipulate foreign exchanges, to influence the level of economic activity in the country, and to influence cooperative politicians by subsequent economic rewards in the business world."
- Carroll Quigley, CFR member, mentor to Bill Clinton, from 'Tragedy And Hope'
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Jan
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Activity: 1043
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December 05, 2012, 07:22:38 PM |
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That's pretty much what a bitcoincard is supposed to do, but it doesn't have the memory for a full client. An android app could do it using ad-hoc wireless or regular wifi and a piratebox as a hotspot.
Being an offline client like the one I outlined does not require much memory. 32 bytes for a private key and roughly 100 bytes for each unspent transaction output and 500 bytes for each full transaction, or something along those lines. You can go far with 1Mb flash memory which is nothing these days. I think we will see them within the next year or so if the market demands it. The tricky part is to make it sufficiently tamper resistant (not android phones) and cheap. |
Mycelium let's you hold your private keys private.
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Rassah
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December 05, 2012, 08:58:17 PM
Last edit: December 05, 2012, 09:14:03 PM by Rassah |
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Damn! Poor Greenland! Must be some awful dictatorial despot up there, keeping a tight seal on internet access, and ruling with an iron lutefisk |
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MoonShadow
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December 05, 2012, 09:17:33 PM |
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That's pretty much what a bitcoincard is supposed to do, but it doesn't have the memory for a full client. An android app could do it using ad-hoc wireless or regular wifi and a piratebox as a hotspot.
Being an offline client like the one I outlined does not require much memory. 32 bytes for a private key and roughly 100 bytes for each unspent transaction output and 500 bytes for each full transaction, or something along those lines. You can go far with 1Mb flash memory which is nothing these days. I think we will see them within the next year or so if the market demands it. The tricky part is to make it sufficiently tamper resistant (not android phones) and cheap. Oh, I don't doubt that we will see them in time, because they certainly do serve a role. I think that we will see light clients like this that are tied to a trusted full client, whose job it is to load spendable transactions upon the light hardware client that are deliberately spendable in ways that do not require (or often do not require) a change output. Thus allowing the light device to forget about the spent transactions, because it no longer has a vested interest in them at all. |
"The powers of financial capitalism had another far-reaching aim, nothing less than to create a world system of financial control in private hands able to dominate the political system of each country and the economy of the world as a whole. This system was to be controlled in a feudalist fashion by the central banks of the world acting in concert, by secret agreements arrived at in frequent meetings and conferences. The apex of the systems was to be the Bank for International Settlements in Basel, Switzerland, a private bank owned and controlled by the world's central banks which were themselves private corporations. Each central bank...sought to dominate its government by its ability to control Treasury loans, to manipulate foreign exchanges, to influence the level of economic activity in the country, and to influence cooperative politicians by subsequent economic rewards in the business world."
- Carroll Quigley, CFR member, mentor to Bill Clinton, from 'Tragedy And Hope'
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