Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-29 Thread dan


You may want to read

The End of Money, David Wolman, 240 pp, Da Capo Press, 14 February 2012

insofar as it suggests that turning your smartphone
into a branch bank makes all other forms of money
irrelevant.  Perhaps especially digital cash.

--dan

___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-27 Thread lodewijk andré de la porte

  1. No offline transactions, which makes Bitcoin useless for
  a large class of transactions.

 On Mon, 27 Feb 2012, James A. Donald wrote:
  Smartphones.

 The implicit assumptions here, namely that
 * everyone who wants to make financial transactions carries a smartphone
 * smartphones never break down
 * smartphone batteries never run down
 * smartphones always have network connectivity
 don't always hold.

I feel obliged to note that anyone carring an up-to-date wallet file can
permit and validate transactions. If his/her wallet file is out of date
double spending might occur, even then one might apply trust to still do
transactions.


 [Another key bitcoin flaw is that it's not particularly anonymous
 in the face of NSA-level network surveillance.  Cash *is* (remains)
 under these conditions.]

Working on this. And the network problem.
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-27 Thread James A. Donald

[Another key bitcoin flaw is that it's not particularly anonymous
in the face of NSA-level network surveillance.  Cash *is* (remains)
under these conditions.]


On 2012-02-27 10:26 PM, lodewijk andré de la porte wrote:

Working on this. And the network problem.


What is the plan?

Seems to me that what bitcoin needs is banking layer on top of the 
bitcoin layer to issue chaumian coins, with bitcoins acting as gold for 
the banks as in free banking (with the potential for ponzis and bank 
failure.


Of course bitcoin banks are unavoidably capable of doing a ponzi, thus 
one should not keep bitcoins in them for very long periods.


___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-27 Thread Natanael
Hmm... Where have I heard of that idea before...

http://disattention.com/78/digital-currencies-crypto-finance-and-open-source/#ot
https://github.com/FellowTraveler/Open-Transactions
https://github.com/FellowTraveler/Open-Transactions/wiki/FAQ

UNTRACEABLE DIGITAL CASH? … FOR REAL?
 Is this the real stuff? With blinded tokens? As in, invented by David
Chaum?
Yes, Open Transactions provides a full and working implementation of
Chaumian blinded tokens. Specifically, the Wagner variant as implemented by
Ben Laurie in his Lucre Project

It works just fine with Bitcoins.

On Mon, Feb 27, 2012 at 21:53, James A. Donald jam...@echeque.com wrote:

 [Another key bitcoin flaw is that it's not particularly anonymous
 in the face of NSA-level network surveillance.  Cash *is* (remains)
 under these conditions.]


 On 2012-02-27 10:26 PM, lodewijk andré de la porte wrote:

 Working on this. And the network problem.


 What is the plan?

 Seems to me that what bitcoin needs is banking layer on top of the
bitcoin layer to issue chaumian coins, with bitcoins acting as gold for the
banks as in free banking (with the potential for ponzis and bank failure.

 Of course bitcoin banks are unavoidably capable of doing a ponzi, thus
one should not keep bitcoins in them for very long periods.


 ___
 cryptography mailing list
 cryptography@randombit.net
 http://lists.randombit.net/mailman/listinfo/cryptography
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread Benjamin Kreuter
On Sun, 26 Feb 2012 08:48:05 -0500
d...@geer.org wrote:

 
 Well put, James.  Warren Buffet's arguments are, to my eye,
 aligned with yours.  He argues that gold has no intrinsic
 value, unlike farmland or a company like Coca Cola.  In that
 way, his evaluation is as instrumentalist as is yours, to the
 extent that I understand the both of you.  His discussion of
 gold, per se, is getting some press.  See
 
 2011 shareholder letter
 www.berkshirehathaway.com/letters/2011ltr.pdf
 
 What I would add to your analysis of fiat currency is to agree
 that nails, moonshine liquor, and antibiotics are replacements
 for fiat currency, but I must also note that the modern economy
 is all but totally dependent on large enterprises which, because
 of their largeness alone, simply cannot engage in barter.

It is not just about big business, it is also about maintaining a
functioning government.  There is too much specialization in society
for courts to assign damages in terms of nails, whiskey, cattle, rice,
or whatever else.  How does the government assess a fine in terms of
barter?

Money and government go hand in hand.  Governments need money in order
to manage taxes, fees, fines, and so forth; yet money becomes valuable
because of the legal structure that surrounds it, which is as true for
gold as it is for fiat currency.  Even if you could become completely
self sufficient, to the point of not have to trade with anyone, you
would still need to pay taxes and fees (property taxes, hunting license
fees, etc.), and you will need to make those payments in a manner that
is accepted by the government (i.e. the money issued by the
government).  Barter systems, de facto currencies and so forth only
work on small scales.

-- Ben



-- 
Benjamin R Kreuter
UVA Computer Science
brk...@virginia.edu
KK4FJZ

--

If large numbers of people are interested in freedom of speech, there
will be freedom of speech, even if the law forbids it; if public
opinion is sluggish, inconvenient minorities will be persecuted, even
if laws exist to protect them. - George Orwell


signature.asc
Description: PGP signature
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread Benjamin Kreuter
On Sun, 26 Feb 2012 17:57:14 +1000
James A. Donald jam...@echeque.com wrote:

   On 2012-02-26 1:18 AM, Benjamin Kreuter wrote: The demand
   for Bitcoin as a currency is driven by its properties as a
   digital cash system; people still need to get their
   nation's currency at some point
 
 Frau Eisenmenger writes in her 1919 diary:

I am not denying that when governments mismanage currencies, crises and
failures ensue.  This is true of all things governments manage:  when
mistakes are made, large numbers of people wind up suffering.  However,
the failure of some countries' currencies does not mean that people are
going to switch from their nation's currency to Bitcoin.  If the US
Dollar were to fail, Bitcoin would be the last thing on anyone's mind;
we would probably wind up switching to some other government's currency
while we sorted out the mess (Yuan perhaps), or we would just spend our
time killing each other and not worrying too much about money.

Perhaps you just need a short list of reasons why Bitcoin is not
going to replace government issued currencies:

1. No offline transactions, which makes Bitcoin useless for a large
   class of transactions.
2. Fixed upper bound on the number of currency units, which creates
   deflationary trends as economies and populations grow.
3. No governments allow tax payments made using Bitcoin, and there is
   no incentive for them to do so.  Even if everyone used Bitcoin for
   day-to-day trades, they would still have to pay property taxes or
   face arrests, property seizures, etc.  When the government becomes
   too ineffective to enforce its own laws, then Bitcoin might have a
   chance, but only as a way to manage trade in some foreign nations'
   currencies (who will still want to trade with people in the region
   where the government failed), and that is assuming that online
   transactions can even happen in such a situation.

Now, I will grant you this:  there is a very, very, very remote
possibility that every fiat currency in the entire world will fail
simultaneously, and that instead of shooting each other people will
continue to engage in trade (and that the Internet survives the mess).
Even in that case, there will need to be some currency for offline
transactions, and so even then Bitcoin will be relegated to second
place.

-- Ben



-- 
Benjamin R Kreuter
UVA Computer Science
brk...@virginia.edu
KK4FJZ

--

If large numbers of people are interested in freedom of speech, there
will be freedom of speech, even if the law forbids it; if public
opinion is sluggish, inconvenient minorities will be persecuted, even
if laws exist to protect them. - George Orwell


signature.asc
Description: PGP signature
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread Benjamin Kreuter
On Sun, 26 Feb 2012 11:00:15 -0500
Bill St. Clair billstcl...@gmail.com wrote:

 On Sun, Feb 26, 2012 at 10:08 AM, Benjamin Kreuter
 brk...@virginia.edu wrote:
  On Sun, 26 Feb 2012 08:48:05 -0500
  d...@geer.org wrote:
 
  Money and government go hand in hand.  Governments need money in
  order to manage taxes, fees, fines, and so forth; yet money becomes
  valuable because of the legal structure that surrounds it, which is
  as true for gold as it is for fiat currency.  Even if you could
  become completely self sufficient, to the point of not have to
  trade with anyone, you would still need to pay taxes and fees
  (property taxes, hunting license fees, etc.), and you will need to
  make those payments in a manner that is accepted by the government
  (i.e. the money issued by the government).  Barter systems, de
  facto currencies and so forth only work on small scales.
 
 You've just made a very good argument for eliminating money, at least
 government issued money. Yes, governments just love to assess taxes,
 fees, and fines. No, I have no need of any of that.

I do not follow your argument -- how does eliminating government issued
money stop governments from collecting taxes and fees?  Governments
whose currencies fail sometimes switch to the currencies issued by
other governments; there are quite a few nations that use US Dollars
instead of issuing their own money.

You may not like the idea of fines or fees, but how would you propose
courts manage disputes between people?  Suppose I fail to maintain my
house, and a piece of it falls off and damages your house -- should you
have to pay for my negligence?  If I raise cattle and you write
software, what should I give you -- a cow perhaps?  Perhaps I should
pay for a repairman to come and fix things -- but what if you do not
like the person I choose?  We have judges and courts to help us resolve
these sorts of disputes, and money is a great way to ease these sorts
of disputes.

You may disagree with the taxes you pay, the fines that are issued, and
so forth -- but would you really want to have a tax collector come and
rate the quality of your work, and then take the products of that work
as a form of tax payment?  Do you want to see people imprisoned,
enslaved, tortured, etc. instead of paying fines?  I also disagree with
the laws in this country, but the solution is not do away with money
or switch to Bitcoin.

-- Ben



-- 
Benjamin R Kreuter
UVA Computer Science
brk...@virginia.edu
KK4FJZ

--

If large numbers of people are interested in freedom of speech, there
will be freedom of speech, even if the law forbids it; if public
opinion is sluggish, inconvenient minorities will be persecuted, even
if laws exist to protect them. - George Orwell


signature.asc
Description: PGP signature
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread ianG

On 27/02/12 03:00 AM, Bill St. Clair wrote:


You've just made a very good argument for eliminating money, at least
government issued money. Yes, governments just love to assess taxes,
fees, and fines. No, I have no need of any of that.



Maybe, maybe not.  The princes, bandits argument is not only theoretical:

https://bitcointalk.org/index.php?topic=16457.0

http://ulf-m.blogspot.com.au/

iang
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread James A. Donald

d...@geer.org wrote:
 Warren Buffet's arguments are, to my eye, aligned with
 yours.  He argues that gold has no intrinsic value, unlike
 farmland or a company like Coca Cola.  In that way, his
 evaluation is as instrumentalist as is yours, to the extent
 that I understand the both of you.  His discussion of gold,
 per se, is getting some press.  See

 2011 shareholder letter
 www.berkshirehathaway.com/letters/2011ltr.pdf

Warren Buffet writes:

What motivates most gold purchasers is their belief
that the ranks of the fearful will grow.

Rather, what motivates most gold purchasers (and thus most
bitcoin purchasers) is their belief that their fears might
well prove correct, that without gold, they might find
themselves penniless refugees, or, worse, without even the
ability to become penniless refugees, because they lack the
funding to leave a collapsing society.

Gold is an end of the world investment, insurance against
total institutional collapse.  We tend to underestimate fat
tail risks such as total collapse, since the English speaking
world has never had a total institutional collapse since the
battle of Hastings in 1068.

This however, is survivorship bias.  In the rest of the
world, total institutional collapse has been rather common.

Warren Buffet correctly argues that gold will, on average,
lose value.  However there is a significant risk that
everything except gold will lose value.

Warren Buffet continues:
A century from now the 400 million acres of farmland
will  have produced staggering amounts of corn,
wheat, cotton, and  other crops – and will continue
to produce that valuable  bounty, whatever the
currency may be. Exxon Mobil will  probably have
delivered trillions of dollars in dividends to  its
owners and will also hold assets worth many more
trillions (and, remember, you get 16 Exxons)

Now let us apply this reasoning to Russian croplands in 1903.  A 
situation is all too easily imaginable where investing in American 
cropland will not get you corn, but a one way ticket to the gulag.

___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread James A. Donald

See 2011 shareholder letter

www.berkshirehathaway.com/letters/2011ltr.pdf


Warren Buffet's argument leads to the conclusion that had Roman in the 
time of Caesar invested a talent in land, or deposited some money with 
the money lenders to earn interest, his descendents would now be worth 
10^67 talents, or about one trillion trillion trillion trillion trillion 
trillion dollars, whereas had he buried a talent of gold in the ground, 
that Roman's descendents would now be worth about one talent, which is a 
few hundred dollars.

___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread James A. Donald

On 2012-02-27 1:28 AM, Benjamin Kreuter wrote:

If the US
Dollar were to fail, Bitcoin would be the last thing on anyone's mind;
we would probably wind up switching to some other government's currency
while we sorted out the mess (Yuan perhaps), or we would just spend our
time killing each other and not worrying too much about money.


There has never been a time when we were too busy killing each other to 
worry about money.


Even before the bronze age there were a curiously large number of 
carefully made stone axe heads that were never used for chopping anything.



Perhaps you just need a short list of reasons why Bitcoin is not
going to replace government issued currencies:

1. No offline transactions, which makes Bitcoin useless for a large
class of transactions.


Smartphones.


2. Fixed upper bound on the number of currency units, which creates
deflationary trends as economies and populations grow.


Deflation, oh the horror, the horror.  How did we ever survive during 
the several hundred years when deflation was normal?



3. No governments allow tax payments made using Bitcoin


Oh the horror.

___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread James A. Donald

On 2012-02-27 1:28 AM, Benjamin Kreuter wrote:
 If the US Dollar were to fail, Bitcoin would be the last
 thing on anyone's mind; we would probably wind up switching
 to some other government's currency while we sorted out the
 mess (Yuan perhaps), or we would just spend our time
 killing each other and not worrying too much about money.

There has never been a time when we were too busy killing
each other to worry about money.

 Perhaps you just need a short list of reasons why Bitcoin
 is not going to replace government issued currencies:

 1. No offline transactions, which makes Bitcoin useless for
 a large class of transactions.

Smartphones.

 2. Fixed upper bound on the number of currency units, which
 creates deflationary trends as economies and populations grow.

Deflation! Oh the horror, the horror.  How did we ever
survive during the several hundred years when deflation was
normal?

 3. No governments allow tax payments made using Bitcoin

Oh the horror.

___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-26 Thread Randall Webmail
From: James A. Donald jam...@echeque.com

Warren Buffet correctly argues that gold will, on average,
lose value.  However there is a significant risk that
everything except gold will lose value.

There is no risk that potable water or salt or (properly maintained) rifles 
with ammunition will lose value.   Gold, however, you can't eat or drink and 
it's a real bitch to try to kill dinner with it.
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-25 Thread James A. Donald

 On 2012-02-26 1:18 AM, Benjamin Kreuter wrote: The demand
 for Bitcoin as a currency is driven by its properties as a
 digital cash system; people still need to get their
 nation's currency at some point

Frau Eisenmenger writes in her 1919 diary:
http://www.wolf1168.us/misc/Articles%20of%20Interest/When%20Money%20Dies.pdf
I  survey  my  remaining  1,000-kronen  notes
mistrustfully,  lying  by  the  side  of  the pack
of unredeemed food cards in the writing table drawer.
Will they not perhaps share the fate of the food
cards if the State fails to keep the promise made on
the inscription on every note? The State still
accepts its own money for the scanty provisions it
offers us. The private tradesman already refuses to
sell his precious wares for money and demands
something of real value in exchange. The wife of a
doctor whom I know recently exchanged her beautiful
piano for a sack of wheat flour. I, too, have
exchanged my husband's gold watch for four sacks of
potatoes,
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-24 Thread James A. Donald

On 2012-02-25 12:53 PM, ianG wrote:
 It is also a singular lesson in the emotive power of cryptography to
 encourage large numbers of people to hash their intelligent thought
 processes. What we are seeing is otherwise rational people invest much
 time  effort into what amounts to a ponzi or bubble or pyramid scheme.

As Moldbug says, money is a bubble that never deflates.

Fact is, you can buy stuff today with Bitcoin.  Its value is not in that 
people hope that tomorrow they can exchange it for more, but that today 
they can exchange it for something.




___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography


Re: [cryptography] (off-topic) Bitcoin is a repeated lesson in cryptography applications - was endgame

2012-02-24 Thread John Levine
Then you'll find out about Santayana's curse - those that don't study 
history are doomed to repeat it.  For reference, start with read John 
MacKay, _Extraordinary Popular Delusions and the Madness of Crowds_.

MacKay turns out not to be all that accurate.

The definitive work on financial bubbles is Kindleberger's Manias,
Panics, and Crashes: A History of Financial Crises.  Get the 2005 5th
edition, which was edited by Robert Solow after Kindleberger died.

It's quite readable, and should help put Bitcoin in context.

-- 
Regards,
John Levine, jo...@iecc.com, Primary Perpetrator of The Internet for Dummies,
Please consider the environment before reading this e-mail. http://jl.ly
___
cryptography mailing list
cryptography@randombit.net
http://lists.randombit.net/mailman/listinfo/cryptography