Wednesday, November 19, 2014

CRYPTO CURRENCY

CRYPTO CURRENCY

Definition of Crypto Currency


Currency is money when in actual use as a medium of exchange, as for example banknotes and coins.  Crypto Currency is a digital type of representative money (opposed to commodity money), i.e., a kind of fiat money.  One important feature is that it is not controlled by any Central Bank, Reserve Bank or Monetary Authority, which usually manages a State´s currency and money supply.  It is not controlled by any Commercial Banking System.  Due to its growing acceptance, Crypto Currency gained status of legal tender, but some claim that Crypto Currency is not a hard currency

If you are familiar with all expressions in italic in the paragraph above, then the definition is enough to make you completely aware of what is Crypto Currency.  You could read just the pros and cons we found in Crypto Currency, in Characteristics of Crypto Currency.
For those not familiar with these expressions, we will define, below, each one of them.
If you want additional pieces of information about these concepts, check our Sources.

Contents




A little bit of Context


Money and Currency 

Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts[1]
The expressions “money” and “currency” are sometimes used interchangeably.
This is correct if you are using “currency” in the sense of “anything that is used, in any circumstances, as a medium of exchange”[2].
But a more precise definition of “currency” is “a system to represent money, using monetary units, which is in common use, especially in a nation”.


Money Supply (of a Nation)

Currency is part of the money supply of a Nation.  In economics, the money supply or money stock is the total amount of monetary assets available in an economy at a specific time.  Money supply data are recorded and published, usually by the government or the central bank of the country. Public and private sector analysts have long monitored changes in money supply because of its effects on the price level, inflation, the exchange rate and the business cycle[3].
There are several theories or approaches to Money Supply Management.  “Orthodox” and “heterodox” economists diverge, proposing different ways to deal with the money supply in order to achieve economic growth and control inflation.
We think that the real issue about Money Supply Management is that we –United States and all developed nations - are using fiat money.  The issues are inherent to this kind of money; if we used a kind of commodity money, the problem would be solved by itself.  We will approach this question, again, later.

Fiat Money

“Fiat money is currency which derives its value from government regulation or law. It differs from commodity money, which is based on a good, often a precious metal such as gold or silver, which has uses other than as a medium of exchange. The term derives from the Latin fiat ("let it be done", "it shall be")”. 
This is the definition you´ll find at Wikipedia, under “Fiat Money”. 
We do not agree– at least not completely – with the idea that a currency based on precious metal such gold or silver is commodity money, not fiat money.  We will talk about this in Commodity Money, below.

Fiat money has been used for the first time in Chine, around the year 1000 AD, with poor outcomes: “The Song Dynasty in China was the first to issue paper money, jiaozi, around the 10th century AD. Although the notes were valued at a certain exchange rate for gold, silver, or silk, conversion was never allowed in practice. The notes were initially to be redeemed after three years' service, to be replaced by new notes for a 3% service charge, but, as more of them were printed without notes being retired, inflation became evident. The government made several attempts to support the paper by demanding taxes partly in currency and making other laws, but the damage had been done, and the notes fell out of favor.”[4]

Highlighting what we already said before: fiat money is what we – United States and all developed nations – are using nowadays.
But this is not the only possible kind of currency!

Commodity Money

Definition in Wikipedia is: “Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects that have value in themselves as well as value in their use as money.  Examples of commodities that have been used as mediums of exchange include gold, silver, copper, salt, peppercorns, large stones (such as Rai stones), decorated belts, shells, alcohol, cigarettes, cannabis, candy, cocoa beans, cowries and barley.”
First of all, let´s take a look at the list. 
It´s evident that salt, peppercorns, candy, cocoa beans and barley do have value in themselves.  They are food, food spices, useful for food preserving – they satisfy the most basic necessity, nourishment. 
We could admit that also alcohol, cigarettes and cannabis do have value in themselves – maybe not the right kind of value, but an intrinsic value anyway.
But what about gold, silver, copper, large stones, decorated belts, shells, cowries?  Yes, we are putting together gold and cowries!  Because, despite the “precious metals” do have some industrial value, just a small fraction of them are industrially used, and its value does not come from its industrial value.  In that sense, a gold necklace´s value and a large stone´s (“Yap” or “Waqab” money, from Caroline Islands) value has the same origin – only the value that people give them!
“Precious” metals do not have any intrinsic value; they are precious just because there are people willing to exchange goods and services for them. 
Monetary systems that followed the “gold standard” (or “silver standard”) just granted that the coins contained a certain amount of precious metal and/or that the bank notes could be exchanged for a certain amount of metal.  This gives some “material base” to the money.  And this gives the system some “certainty”, since it constrains the amount of bank notes a government can print and therefore helps to avoid inflation.  But, since the metals do not have value in themselves, there is no intrinsic value anywhere – neither in the bank notes nor in the metals that supports it!  Repeating – they have only the value that people give them!  In the moment there is nobody willing to accept gold in exchange for goods or services, a ton of gold is just a pile of shiny metal!

Representative Money

Since this, a system based on precious metals can be named a “Representative Money” system, but not actually a “Commodity Money” system.  As the Wikipedia says, “Representative money is any type of money that has face value greater than its value as material substance.  Used in this sense, fiat money is a type of representative money.” [5]

Let´s take a look at a kind of commodity money which has actual intrinsic value and has been used for a long period of time in a great Empire.

Egyptian Wheat Currency – Actual Commodity Money[6]

The best example of a commodity based financial system is the Egyptian use of wheat. For much of their recorded history, the ancient Egyptians used wheat and credits based on wheat as the blood of their complex banking and financial system. Because it is a staple food, wheat held high and immediate intrinsic value. There would always be a ready market for this commodity in any location and for a broad scale of transactions.
Wheat was ubiquitous in the economy and transferable enough to make a financial system work for hundreds and perhaps thousands of years. And there are no recorded instances of bank failures or currency inflation in this period. With fiat money, financial crises are a regular occurrence.

The Fallacy of “Intrinsic Value” of Work – and of Precious Metals

Dr. Gary North, in the article “The Fallacy of Intrinsic Value”, published in “The Freeman” (http://fee.org/the_freeman/detail/the-fallacy-of-intrinsic-value ) says “Take, for example, the labor theory of value. Classical economics—by which we mean that body of economic thought which was in vogue from the time of Adam Smith (1770′s) until the marginalist-subjective schools arose (1870′s)—was confounded by the problem of value. It proposed a cause-and-effect relationship between human labor and value: abstract human labor (which itself was an abstract concept derived more from mechanics than human experience) was produced by laborers on their jobs; this abstract human labor was in some way embodied in the products of that labor, and this is the source of all value.”
And proceeds: “Karl Marx was the last major economist to hold to the labor theory. In this sense, he was the last of the great classical economists. He wanted to demonstrate that capitalism, by its own internal contradictions, was doomed to a final destruction. Unfortunately for Marx’s predictions, what he regarded as a basic set of contradictions of capitalism was merely a set of contradictions in the reasoning of the classical economists. He confused a faulty ex­planation of the capitalist process with the actual operation of the capitalist system.”
The truth is the contrary of Marx’s thesis:  the value of labor derives from the product value.  And products have value mostly when – at zero cost – it would not be enough for everyone.
We think that this is the explanation for the absence – or little significance - of money in primitive societies which live from abundant natural products – there is enough for everyone, at zero cost!
Thus, if the value of the product does not come from labor, value is not something intrinsic to either the labor or the product; it is imputed by acting men.
But, according to Dr. North, “Yet we should not be too hasty in ridiculing Marx for his insistence on viewing value as something intrinsic in an economic good.  … … …  Conservatives do not like communism. As a result, they are willing to reject the familiar tenets of Marx’s economics. … … … Unfortunately, it would seem that they abandon it in name only, simply because Marx happened to believe it. They have not abandoned the fundamental approach to economics which Marx employed, namely, the fallacy of intrinsic value.  The most common application of this erroneous concept, at least in conservative cir­cles, is the idea that gold and silver possess intrinsic value, while paper money does not. This error deserves special attention.”
“There is a basic confusion here. The confusion rests on a mixing up of two very different propositions: (1) gold and silver are historically valuable; and (2) gold and silver have intrinsic value. The first proposition is indisputably correct; in fact, there are few economic or historical statements that could be said to be more absolute. … … …  This position of gold in history is a self-perpetuating phenomenon: people tend to accept gold because they and others have in the past; they assume that others will be willing to accept gold in exchange for goods in the future. This assumption of continuity is basic to all goods that function as money.”  The “bold” is ours.

Let us highlight that we understand that what Dr. North refutes is the intrinsic value of labor and the intrinsic value of precious metals.  He is not denying the intrinsic value of goods necessary to life – as food, for example.  And we are not saying that Dr. North´s statement that “value is imputed by acting men” is incorrect; we are just adding that men will always value goods necessary to life.

Since gold and silver are not “necessary to life”, currency systems based on precious metals are not actual “commodity money” – they are “fiat money with a base”. 
But, even if these currency systems are based in nothing of intrinsic value, they have, as we said before, a “material base” for fiat money, preventing uncontrolled inflation. 
For a long time, the “gold standard” guided Nation´s currency systems.

Gold Standard[7]

The use of gold as currency has thousands of years.  It is durable, portable, divisible, scarce – all important requirements for a currency[8].  And the idea of “gold” is so inseparably linked to “richness” that it is highly valued and people can assume that it will continue to be valued in the future.

Notice that, despite all this, currency systems based in gold are not safe from issues.  For example, during Spanish plunder of America in the 1500s, a great decline in gold´s value occurred.

In modern times, the Gold Standard was stablished in 1821, when Great Britain created the gold sovereign.  In 1873, United States adopted the gold standard, using the eagle as unit. 
The gold specie standard ended in the United Kingdom and the rest of the British Empire at the outbreak of World War I. Treasury notes replaced the circulation of gold coins.
The British Gold Standard Act 1925 both introduced the gold bullion standard and simultaneously repealed the gold specie standard. The new standard ended the circulation of gold specie coins. Instead, the law compelled the authorities to sell gold bullion on demand at a fixed price, but only in the form of bars containing approximately four hundred troy ounces (12 kg) of gold.

Great Depression

Some economic historians, such as Barry Eichengreen, blame the gold standard of the 1920s for prolonging the economic depression which started in 1929 and lasted for about a decade. Adherence to the gold standard prevented the Federal Reserve from expanding the money supply to stimulate the economy, fund insolvent banks and fund government deficits that could "prime the pump" for an expansion. Once off the gold standard, it became free to engage in such money creation. The gold standard limited the flexibility of the central banks' monetary policy by limiting their ability to expand the money supply.

Breton Woods – the Post-World-War-II Global Gold Standard[9]

The Bretton Woods system of monetary management established the rules for commercial and financial relations among the world's major industrial states in the mid-20th century. The Bretton Woods system was the first example of a fully negotiated monetary order intended to govern monetary relations among independent nation-states.  Preparing to rebuild the international economic system while World War II was still raging, 730 delegates from all 44 Allied nations gathered at the Mount Washington Hotel in Bretton Woods, New Hampshire, United States, for the United Nations Monetary and Financial Conference, also known as the Bretton Woods Conference. The delegates deliberated during 1–22 July 1944, and signed the Agreement on its final day.  Setting up a system of rules, institutions, and procedures to regulate the international monetary system, the planners at Bretton Woods established the International Monetary Fund (IMF) and the International Bank for Reconstruction and Development (IBRD), which today is part of the World Bank Group. These organizations became operational in 1945 after a sufficient number of countries had ratified the agreement. The chief features of the Bretton Woods system were an obligation for each country to adopt a monetary policy that maintained the exchange rate by tying its currency to gold and the ability of the IMF to bridge temporary imbalances of payments. Also, there was a need to address the lack of cooperation among other countries and to prevent competitive devaluation of the currencies as well.

 

End of the Gold Standard – The Nixon Shock – Representative Money becomes Fiat Money

The Nixon Shock was a series of economic measures undertaken by United States President Richard Nixon in 1971, the most significant of which was the unilateral cancellation of the direct convertibility of the United States dollar to gold[10].  Nixon took that measure to fight unemployment and inflation.

In 1996, liberal economist Paul Krugman (Nobel Prize in Economic Sciences, 2008) summarized the post-Nixon Shock era as follows:
“The current world monetary system assigns no special role to gold; indeed, the Federal Reserve is not obliged to tie the dollar to anything. It can print as much or as little money as it deems appropriate. There are powerful advantages to such an unconstrained system. Above all, the Fed is free to respond to actual or threatened recessions by pumping in money. To take only one example, that flexibility is the reason the stock market crash of 1987—which started out every bit as frightening as that of 1929—did not cause a slump in the real economy.
While a freely floating national money has advantages, however, it also has risks. For one thing, it can create uncertainties for international traders and investors. Over the past five years, the dollar has been worth as much as 120 yen and as little as 80. The costs of this volatility are hard to measure (partly because sophisticated financial markets allow businesses to hedge much of that risk), but they must be significant. Furthermore, a system that leaves monetary managers free to do good also leaves them free to be irresponsible—and, in some countries, they have been quick to take the opportunity.”

A more biased point of view is in the words of a gold dealer[11], “In 1971, President Nixon made a decision that changed the fate of the global economy; he closed the gold window. Instead of learning from the trouble the world had already experienced with unchecked inflation, and the fact that systems for global trade had grown up around the US Dollar as the Reserve Currency of the world, instead of changing it, the world accepted pure fiat money as the new currency for all transactions. This of course has never happened throughout history, and marked a departure from thousands of years of wisdom. We had entered the age of pure fiat currency, with the entire world trading in currency that is not tied to the discipline of gold or silver.
By removing the US Dollar from the gold standard and completely separating the dollars ties to gold, the US has effectively debased the currency to the point of removing all intrinsic value from it.”

The plain truth is that after 1971, the global economy switched to plain fiat money. 
We don´t think it was a radical change.  Bank notes have zero intrinsic value, but gold has very little intrinsic value.  Then the change just gave the Central Banks the power to freely increase the money supply.   The change brought a new way to manage the currency system, but the system itself did not changed radically – it was, and continued to be, based in fiat money, currency created by laws and conventions, currency with no intrinsic value.

Fiat Money has too many intrinsic Fails, we need a New Kind of Commodity Money

The “capitalism crises” are not mandatory, and are not inherent to capitalism.  Several of these “capitalism crises” was just consequences of the monetary system – of the use of fiat money!
We are not going to dwell on it.  Paul Krugman´s words (above) are enough!
When Central Banks fail in managing the currency, it is not because they are not competent enough, it´s because the whole system is inherently flawed!

 

Crypto Currency is Fiat Money – and hence has the same problems than Fiat Money – just worse!

That´s what Crypto Currency is – fiat money, based on nothing, valued just because there are people willing to exchange it by goods and services. 

 

Weaknesses of a Crypto Currency - Bitcoins

·         Fiat money value is supported by governments.  Yes, governments can make mistakes or can be irresponsible.  But Bitcoins have support of… nobody! 
·         Fiat money does not have thousands of years of tradition as gold.  Nevertheless, it has been used for 40 years.  Bitcoins has been used for half a dozen years.  Who can grant that they will have value in the future?

Bitcoins Intrinsic Contradictions

Bitcoins have an unsolvable dilemma.
We know that if the amount of a fiat money increases (if more money is created), inflation will be the unavoidable consequence.
The fact is that Bitcoin transactions are supported by people who are paid in Bitcoins – new Bitcoins are created to pay these people.
To avoid inflation, the system makes harder and harder to “mine” (to create) Bitcoins.  In other words – supporting Bitcoin transactions is resulting in smaller and smaller profits.

That´s the dilemma: if the system reaches a point where is impossible (or excessively difficult) to “mine” new Bitcoins, people will stop supporting Bitcoin transactions – and the whole system will crash.
If, in order to avoid this, the system makes easier to mine new Bitcoins, inflation will be the result – and the whole system will crash.

The concept, as is now, simply can´t work.
Period.

Bitcoins can be used as Legal Tender, but they are not Hard Currency

We could say that nowadays some kinds of Crypto Currency – as for example Bitcoins – has a status of legal tender – a medium of payment recognized as valid for meeting financial obligations[12].  Bitcoins can be used in business, so they are, if not “legal” tender, at least “de facto tender”.

But they are not “hard currency”, which is, according with Wikipedia, “Hard currency, safe-haven currency or strong currency is any globally traded currency that is expected to serve as a reliable and stable store of value. Factors contributing to a currency's hard status might include the long-term stability of its purchasing power, the associated country's political and fiscal condition and outlook, and the policy posture of the issuing central bank.”
Reliability and stability can´t be expected from Bitcoins, we already gave the reasons why.  And there is no country to apply any political and fiscal policies.
Since this, despite you can opt for using Bitcoins in transactions, they are not, not at all, convenient as a “money store”, they are not suited to saving or investing.

Bitcoins Virtues

The positive points of Bitcoins are the innovative way of having all of the currency transactions recorded by the public and without a central organizing agency and it´s capability of be a global medium of exchange with near-zero friction (i.e. with near zero transaction fees.)[13]

Suggestion – a New Commodity Money

We think all our readers already understood our point of view – fiat money is not a good monetary system, it exists in its current form by just 40 years, has crossed several crises, and we think it will not be used – as is – for a long period of time.  Commodity money makes a lot more sense!

But what kind of commodity could we use nowadays?  Not wheat, as the Egyptians did, or seal oil, as the Inuit!

What if we used as the basic foundation something with great intrinsic value? 
More than intrinsic, great value!  Something useful to cook our meals, to warm and refresh our homes, to propel our vehicles, even to make the Internet work!  This sounds valuable enough for you?
Add to all this the facts that this “currency” can be easily stored, transported, transferred, fractioned and measured.

Energy!

Energy is the perfect currency. 
It supports the world nowadays.  Energy is real wealth!
More than that – it is environmentally realistic, since it measures a real physical unit. 

With energy, we will have the perfect Commodity Money!

Please let us lend the words of the site “Perfect Currency ( http://www.theperfectcurrency.org/ ) to explain our point of view:
“Energy currency restores a direct link to real goods on both sides of the transaction and minimizes abuse as well as eliminating distortions like currency debasement inflation.
So with the move to energy based currency we will have come full circle from fully transparent real good transactions to faith based transactions and back again. Precious metal based coinage and printed currency accelerated immensely the pace of commercial development. But fiat currency based monetary systems have proven highly opaque and unstable with large cumulative delayed distortions and crisis.
Energy currency takes us back to fully transparent, stable, real goods exchanges with unlimited scale and flexibility. The ultimate form of barter with unlimited scale and complete flexibility.”


Technology to Store and Transfer Energy - Joining Virtual Currency and Commodity Money Advantages to End Money and Use Just Energy!

In the future, we can eventually develop technology to store and transfer energy, not just “currency based on energy”.  This would actually end currency, end any symbol, the actual commodity itself being used in all transactions.
Energized cards in our wallets, each ATM a power plant, Internet banking transferring energy instead of data – and end to all financial crises, to inflation, to speculation and other evils inherent to monetary systems!



Characteristics of Crypto Currency

Cryptocurrency is a digital – or virtual – currency that uses cryptography for security.[14] 
A cryptocurrency shall have strong security features to avoid counterfeit.
It shall not be issued by any central authority, being immune to government interference or manipulation.
Transactions with cryptocurrency are anonymous. 
The widely knows cryptocurrency is Bitcoin.
Some competitors are Litecoin, Namecoin,  PPCoin and Zerocoin.


Bitcoins

Bitcoins presents itself as “an innovative payment network and a new kind of money”[15].

Basics for a New User[16]



·         Install a Bitcoin wallet in your computer or mobile phone
·         It will generate your first Bitcoin address.  You´ll be able to create more later, and you shall to do so, because a Bitcoin address should be used only once.  You disclose it in order to be paid – or vice-versa – and then create a new one.
·         The Bitcoin network relies on shared public ledger.  All transactions are recorded in the block chain.  The integrity and chronological order of        the block chain are enforced with cryptography.
·         A transaction is a transfer between two Bitcoin wallets that gets included in the block chain.  All transactions are broadcast between users and usually begin to be confirmed by the network in 10 minutes, through a process called mining.
·         Mining is a distributed system that is used to confirm waiting transactions by including them in the block chain.  It is a consensus system, i.e., allows different computers to agree on the state of the system. 

Important Information for New Users[17]

·         Secure you wallet – be careful storing your wallet into on-line services; keep just small amounts for everyday use in your wallet; backup your wallet; encrypt your wallet.  For your savings, consider using an offline – in a place disconnected from the Internet – wallet.
·         Bitcoin price is volatile.  Keeping your savings with Bitcoin is not recommended.
·         Bitcoins payments are irreversible, can´t be refunded by the person who received the payment.
·         Bitcoin IS NOT ANONYMOUS.  All transactions are stored publicly and permanently in the network; anyone can see the balance and transactions of any Bitcoin address.  The identity of the user behind the address remains anonymous until the information is revealed during a transaction.  (That´s why you use an address just once.)
·         Bitcoin is still experimental.


Mining[18]


Bitcoin mining is the process of making computer hardware do mathematical calculations for the Bitcoin network to confirm transactions and increase security. As a reward for their services, Bitcoin miners can collect transaction fees for the transactions they confirm, along with newly created bitcoins. Mining is a specialized and competitive market where the rewards are divided up according to how much calculation is done. Not all Bitcoin users do Bitcoin mining, and it is not an easy way to make money.

Bitcoins – additional pieces of information


·         Why Bitcoin and other cryptocurrencies will inevitably become tools of the rich, powerful and criminal - http://www.businessinsider.com/why-bitcoin-and-other-cryptocurrencies-will-inevitably-become-tools-of-the-rich-powerful-and-criminal-2013-12
·         Weaknesses - https://en.bitcoin.it/wiki/Weaknesses
·         Bitcoin vulnerable after miner takes 51 percent network share.  Researchers from Cornell University say that on multiple occasions, a single mining pool repeatedly contributed more than 51 percent of Bitcoin's total cryptographic hashing output for spans as long as 12 hours.  These so-called 51 percenters, for instance, have the ability to spend the same coins twice, reject competing miners' transactions, or extort higher fees from people with large holdings. Even worse, a malicious player with a majority holding could wage a denial-of-service attack against the entire Bitcoin network. http://www.fswired.co.uk/news/archive/2014-06/16/bitcoin-security-guarantee-compromised




Sources

·         The Fallacy of “Intrinsic Value” - http://fee.org/the_freeman/detail/the-fallacy-of-intrinsic-value
·         Energy Currency vs. Bitcoin Currency vs. Fiat Currency vs. Gold Currency vs. Google Currency - http://eddiesblogonenergyandphysics.blogspot.com/2013/11/energy-currency-vs-bitcoin-currency-vs.html
·         Money - http://en.wikipedia.org/wiki/Money
·         Currency - http://en.wikipedia.org/wiki/Currency
·         Money Supply - https://en.wikipedia.org/wiki/Money_supply
·         Fiat Money - http://en.wikipedia.org/wiki/Fiat_money
·         Representative Money - http://en.wikipedia.org/wiki/Representative_money
·         Commodity Money - http://en.wikipedia.org/wiki/Commodity_money
·         Gold Standard - http://en.wikipedia.org/wiki/Gold_standard
·         Silver Standard - http://en.wikipedia.org/wiki/Silver_standard
·         Central Bank - http://en.wikipedia.org/wiki/Central_bank
·         Nixon Shock - http://en.wikipedia.org/wiki/Nixon_Shock
·         Bretton Woods System - http://en.wikipedia.org/wiki/Bretton_Woods_system
·         Fractional-reserve banking - http://en.wikipedia.org/wiki/Fractional-reserve_banking
·         Open Market Operation - http://en.wikipedia.org/wiki/Open_market_operation
·         Hard Currency - http://en.wikipedia.org/wiki/Hard_currency
·         Legal Tender - http://en.wikipedia.org/wiki/Legal_tender
·         Money vs Currency - http://www.uhuh.com/unreal/moncur.htm
·         Cryptocurrency - http://www.investopedia.com/terms/c/cryptocurrency.asp
·         Bitcoin site - https://bitcoin.org/en/
·         How does Bitcoin work - https://bitcoin.org/en/how-it-works
·         Some things you need to know - https://bitcoin.org/en/you-need-to-know








[6] Commodity Based Currencies - http://www.theperfectcurrency.org/main-history-of-money/history-of-money .  Other references to this Egyptian Wheat Currency System can be found in “Money in Ptolemaic Egypt: From the Macedonian Conquest to the End of the End of the Third Century BC”, by Sitta von Reden; also in “The Economies of Hellenistic Societies, Third to First Century BC”, by Lucia Criscuolo.  Also in “Prices, Wages and Payments in Ancient Egypt”, at http://www.touregypt.net/featurestories/prices.htm .  Also in “Ancient Egypt – Economy”, at http://looklex.com/e.o/egypt.ancient.economy.htm .
[11] International Bullion House, “History of Money” - http://www.intbullionhouse.com/_blog/Resources/post/History_of_Money/
[13] Energy Currency vs. Bitcoin Currency vs. Fiat Currency vs. Gold Currency vs. Google Currency - http://eddiesblogonenergyandphysics.blogspot.com/2013/11/energy-currency-vs-bitcoin-currency-vs.html
[15] Bitcoin site - https://bitcoin.org/en/
[16] How does Bitcoin work - https://bitcoin.org/en/how-it-works
[17] Some things you need to know - https://bitcoin.org/en/you-need-to-know

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