Things are hotting up for bitcoin right now with the price over $420 on MtGox. CNBC's interview yesterday of the Winklevoss twins shows both the fundamental lack of understanding of bitcoin by the interviewer (asking "where is the Ben Bernanke of bitcoin?") and also the feeling many bitcoin supporters have right now: that even with the price increasing quickly (although whether the current price increase is 'quick' is debatable given the many calculations of a final prices in the order of $40k+), adoption, this time as least, seems to be increasing similarly quickly with big time players like Baidu and Shopify coming on board.
  
Peter Schiff though gives a scathing response to their comments: that bitcoin is a bubble (he even likens it to the Tulip bubble of 1637), that people are buying bitcoin because they think their value will increase, and that he expects it to implode.

Bubbles don't form simply because people buy into something that they think will increase in value.  A bubble forms when the primary reason for the increase in price is an increase in demand fuelled by people thinking the price will increase (but otherwise see no significant value in it).

Peter along with many others seem to think that because people are buying bitcoins with the view that they are undervalued this constitutes a bubble, yet this is the basis of much of investing.  If I buy stock in a company then it is for one of only two reasons:

• A) The dividend payment
• B) The stock price will go up

With (B) being a significant part if not the vast majority of investing in the world.

In terms of viewing whether a company stock is in a bubble we can look at the company's fundamentals, how much profit they make, what their long term prospects to make profit are, and we can invest based on how profitable we think the company will be not just now but in the future.  This often leads us to evaluate whether companies are over or undervalued by their price to earnings (P/E) ratio.

With bitcoin, the fundamental driver of its underlying value is not selling products to make profit, it is its adoption and usage.  If bitcoin's adoption is increasing (enough) then its price increase is justified.  Instead if there are people piling in buying bitcoins all hoping to hold them for a short while then sell them for short term gain then the price increases while demand is there but then falls away as people being to cash out.  This then accelerates are more people get concerned that they will lose their investment and cash out.

The nature of the bubble, when/whether it will pop and how far it will go if it does pop will depend on the investors, the question is: are bitcoin investors in it for the short term or the long haul?

I can't speak for everyone and there will without a doubt be those that do hope to just play the price in the short term for gains but at the same time my own perspective on and appreciation of bitcoin is nothing special so my own thinking and strategy may well match up to others that believe in the fundamental value of bitcoin, so here it is:

The first step is to believe that bitcoin is a genuinely beneficial and new invention.  How you get to this point and what level of understanding you need is very individual but if you're going to buy bitcoin then this is likely a given.

The next step is to accept that you can't predict how life will pan out for bitcoin, and that you may be wrong.  I can't predict regulation and its effects, I can't predict the development path of quantum computers, and I can't predict whether bitcoin will survive being the worlds most profitable target for hackers the world has ever seen.

What I can say is that bitcoin looks to have a lot of potential, and that I accept these risks.  

The next conclusion if I think bitcoin has fundamental value beyond its current price is that it is better to buy early, while the rest of the world hasn't caught on yet and while they still think bitcoin is no different to PayPal.

Because I accept the risks and because bitcoin is cheap at this point, I don't bet my house on it because I don't need to.  I can buy a bunch of bitcoins and if the positive predictions of bitcoin going to $100k work out then I don't need to hold a lot of them.  If the predictions don't work out and it all fails then I don't lose much.

In short, if bitcoin wins out, I win.  If bitcoin loses out, I don't care - I walk away.  My investment was low because I wasn't trying to secure a return of 2 or 3x, I was investing with the view that it could go to 100x.

If I hold bitcoins then and their value is increasing, then you might think there is an overwhelming tendency to want to cash out and realise gains in case it crashes (or maybe when it crashes?).  This assumption is wrong for a number of reasons:

1. I don't care if my investment loses its value.  I am in it to see a 100-1000x increase, not 2 or 3x, so bitcoin increasing 2 or 3x is interesting but its not anywhere near a trigger point for me.
2. Even if their value increases very significantly (say 100x), because I understand and appreciate bitcoin I would still rather keep a lot of money denominated in bitcoin than USD (or some other currency) because I know currencies around the world today are inflating horribly due to Quantitative Easing and because of the risk of bail-in (confiscation).  Therefore even if the price of bitcoin skyrockets and goes to $10k per bitcoin, I don't suddenly think that the best place to keep my money is in USD in a bank!
3. Because of the nature of the gains I expect bitcoin may make (orders of magnitude), as it hits certain points I can extract a portion of my bitcoins to realise some of the gains and diversify while still retaining the bulk of my bitcoins (and therefore the demand for bitcoin if others take the same view will remain high).  For example if I bought bitcoins at $25 each, then maybe I would sell 10% at $250.  This covers my initial investment 100% yet I still retain 90% of my bitcoins, thereby reinforcing (1).  Similarly when it reaches some other higher number maybe I cash out another small amount to diversify yet retain the bulk. This isn't possible when the gains you expect are 10 or 20%, its only possible when you think bitcoin is undervalued by orders of magnitude.

This is just my strategy but it is based on simple logic that anyone who:

• A) believes bitcoin has significant utility and that demand will ultimately drive prices much higher as a result of its adoption for that utility.
• B) believes they realised this early enough that they think bitcoin will make significant gains

In this case anyone can buy a small number of bitcoins, wait, cash out partly when they can cover their investment with a fraction of the gains and then sit on the rest purely as savings.

This act of saving (which some would describe negatively as 'hoarding') is not bad for bitcoin, it is an important use of bitcoin as a safe store of value and a valid part of its demand.  If people save bitcoins then it reduces the pool for other forms of adoption like use by merchants which naturally means their value must increase to meet that demand.  Saying that every bitcoin must be in circulation for it to be viable is like saying USD will fail if anyone keeps them in their wallet or bank account too long.

Where it does become bad for bitcoin is if I fundamentally believe bitcoin will ultimately fail and I am holding it with a view to making some gains before cashing out.

Some will hold this view and they will undoubtedly create bubbles and pops as bitcoins adoption progresses but to call bitcoin predominantly a bubble we need to ask the questions:

• Does bitcoin have fundamental utility (value)?
• Are most bitcoins held by people who think it has fundamental utility (and therefore don't plan to dump them all in exchange for USD they think 'the bitcoin bubble is popping')?

Given that roughly 90% of bitcoins in circulation today were mined before the end of 2012 (when the media still laughed at them) my guess would be 'yes' to both.  If I'm right then we will see bubbles and pops but rather than crashing to zero bitcoin will retain a strong base of value which will increase in line with adoption.

If you keep on top of bitcoin news you've probably stumbled across stories from one of its most vocal followers - Joe Wiesenthal.  Joe regularly makes posts about bitcoin's development and progress, for example:

• (Up) Nov 5th - Bitcoin is Going Totally Ballistic
• (Up) Nov 6th - Bitcoin Is Going On An Astronomical Tear
• (Up) Nov 7th - Bitcoin Goes On An Overnight Nuclear Melt-Up
• (Up) Nov 8th - Bitcoin Is Going Crazy Again
• (Up) Nov 9th - Bitcoin Is Having Another Preposterously Huge Day
• (Down) Nov 10th - Bitcoin Crashes Nearly 25%
• (Up) Nov - 11th - Although bitcoin has regained its pre-weekend value we have as yet no headline about it going on an Astronomically Huge Preposterous Nuclear Melt so far... perhaps Joe has decided that the early-stage and growing bitcoin is simply more volatile than the assets he is used to?  Then again the night is young...

Bitcoin is such a new phenomenon that before investing time, money or effort into it, it makes sense to assess it as clearly and in as much depth as possible.

As a computer scientist the elegance and power of certain algorithms is immediately apparent.  Binary Chop always springs to my mind for example but probably an even better example of this, more understandable to a non-programmer is Diffie Hellman key exchange, described in this excellent video by Khan Academy.

As Seymour Papert described some time ago in his book Mindstorms, people regularly exposed to algorithms come to think not just formally in terms of them but concretely, understanding them at a more intuitive level and naturally applying them to other situations.  When faced with a new algorithm it is absorbed far more easily and the consequences, strengths and weaknesses are much more readily apparent.

Algorithms like these do not need to be complicated, but they elegantly solve a very difficult problem which can then have very far reaching consequences.

As Tim Lee has described bitcoin falls into this category.  It is fundamentally different to centralised systems with trusted entities like PayPal, Amazon Coins, or even US Dollars.  It isn't different because someone says it will be and the 21 million coin limit isn't there because someone says they won't create more, any more than Diffie Hellman key exchange allows exchange of a secret key simply by virtue of someone saying they will keep it hidden.  It is the fundamental operation of the algorithm and its properties which gives it its strength.  

If you want to decrypt a document encrypted with AES without first obtaining the secret key then you will have to break AES.  What this means is you will have to spot something in the algorithm that everyone else has missed, or run calculations for longer than the death of many universes to discover it by random chance.  This is why cracking AES is hard, its not just a function of spending money or the speed of computers.

These algorithms open up possibilities that simply weren't there before.  As Richard Brown, IBM's executive director points out: like many others, until Bitcoin existed he simply didn't think it was possible.

Bitcoin then, is a very exciting idea.  To understand bitcoin is to understand the doors that have been opened by its invention in the same way that Diffie Hellman and RSA opened doors.

To understand bitcoin in the context of recent issues such as the Cyprus Bail-ins is to see these doors opened at perhaps the perfect time both to protect a lot of average people and for bitcoin to flourish as a result.  Further, anyone experiencing the actually poor security, high barriers and high fees of the existing payments infrastructure has even more reason to get excited about it.

However, metacognition warning bells begin to ring.  Exciting, but this sounds too good to be true?  What are the flaws?  What are the arguments against?  Where are the holes?  As Harvard Business Review wisely recommends the best way to not get caught up in the hype is to appoint or play devil's advocate and try to look for flaws, holes, reasons why this isn't what it appears to be, reasons why it will fail.

This approach can lead to some valid concerns about bitcoin, particularly in its earlier days - 51% attacks, effects of regulation, knowledge of the NSA's hand in weakening cryptography standards and the security of its implementation. These are valid criticisms and concerns which come from an understanding of the benefits and risks of bitcoin.

Unfortunately Joe appears to be leading the charge of the majority of vocal bitcoin critics who fall into the other type of criticism for bitcoin - that based on a hollywood level understanding of it.

Without understanding the doors that bitcoin has created and opened and the fundamental strengths and weaknesses of its design its not possible to distinguish between it and existing technologies which are superficially similar and it therefore becomes easy to laugh at it and dismiss it.  Why is it any different to PayPal?  Who says there will only be 21 million bitcoins?  Everything is cracked (and therefore destroyed?) at some point / at some price.  

Joe's arguments are more economic but still appear to stem from a lack of in depth understanding or maybe just a lack of critical thinking.

Joe writes that "If you believe in bitcoin then you should never buy anything in bitcoin" making the case that a deflationary asset (one that increases in value) means that you will continually hoard it and never spend its value.  Unfortunately Joe misses the point that supply-limited deflationary assets already exist - in fact in his profile he states that he owns gold - but he fails to see the parallel.  Similarly Joe must realise that people can and do invest in the stock market with the expectation of making returns (their money invested will become a larger amount of money next year - the fundamental quality of a deflationary asset).  Given the existence of the stock market and the opportunity to make returns his argument would suggest that we must all be putting every penny we have into Amazon stocks and hoarding all our cash because we see it increase in value.  What he misses is that people are making a value and risk judgement.  I can invest in Amazon stock and be happy to watch it go up without operating purely on the black and white case of either investing and keeping all my money in it or not.

Joe also claims that "Bitcoin is a joke" because it lacks "intrinsic value" and is "mostly just a speculative vehicle" with other activity predominantly limited to "PR stunts about bars and other shops accepting bitcoins".  Joe apparently sees the current gold price of $41,000 per kilogram as being entirely a function of its ability to conduct electricity, resist corrosion and look attractive.  I can only assume he is investing heavily in clearly undervalued aluminium, copper and plastic beads.  We will no doubt all look like fools when one day in the not too distant future Joe sits atop his mountain of fake plastic pearls and sells them to us at $40,000 per kilo.

Similarly Joe's criticisms that bitcoin hasn't already built all its possible infrastructure and saturated its market to greatly reduce volatility remind me of Clifford Stoll's now legendary criticism of the internet back in a 1995 Newsweek article, helpfully describing the future in very accurate detail while at the same time claiming none of it will come to pass.

Whether we are missing something fundamental in our understanding of bitcoin is open to debate and to that debate I am very open.  Whether the doors it has opened and the strengths and weaknesses of its design are as they appear or not is an interesting and valid discussion, as with any groundbreaking new algorithm or technology.  Unfortunately bitcoin's potential to have such a profound effect on the often non-technical and very vocal world of finance appears to mean arguments like these are by far the most common within the discussion yet don't add a lot to it.

The news around bitcoin recently has been awash with reports of the price hitting new highs.  Recently the price has surpassed the $260 mark it high it hit in April.

The problem with these stories is that they come from finance-oriented sites that think because bitcoin is described as an asset and a currency all the typical knowledge they have about assets and currencies applies to bitcoin.

These are websites that get excited about a few hundred basis points (few percent) move in the price of gold so when bitcoin doubles its value in a short time its an amazing feat.

Thats not to say that doubling value isn't a significant change, but it just doesn't mean the same thing as say, gold, doubling its value.

Bitcoin is a new technology, but its also a new asset and currency.  The price of a bitcoin is affected by many things including psychology, macroeconomics and news but by far the most important effect on its price is its level of adoption.

If there were only ten people in the world interested in gold and trading it between themselves would they trade it at $1300/oz?  What about if those ten people suddenly had another 100 interested? would they trade it at the same price?

Bitcoin's price and its adoption are closely linked because adoption of this particular technology is close to being the same thing as demand for it as an asset.

Here's a bitcoin chart you may not have seen already:

Mundane right? sure there's a bit of volatility in there but not much to speak of, generally it looks like a pretty straight line.

The chart above is the bitcoin price in USD from day one until today.  The reason it looks like a straight line though is that the scale is logarithmic, not linear.  Here's the USD bitcoin price charts with their different scales:

This is the same data, the only difference is the scale.

Interesting, but so what if bitcoin is following an exponential curve in its price, maybe its just a fluke or a massive bubble?

The reason why this makes sense is that new and groundbreaking technologies are not linear, they are S-curves.

Here's a chart of Facebook's users:

As you can see its not linear, its exponential.  Growth starts out small, maybe stays linear for a while but at some point a critical mass is reached and adoption propagates like a chain reaction with each new user causing more new users to adopt.  Later when saturation is nearing the curve slows down and starts to level off (you can just see that starting to happen at the end of this chart).

Bitcoin is following a similar adoption curve, the only difference is that the price is also affected by other factors like greed, fear, news, and the economy.  This adds volatility to the curve and even creates bubbles within the curve but the overall trend stays the same - an exponential curve (with bumps) that will at some point level off.

The levelling off will occur when bitcoin nears saturation, not just from individual user adoption (people that know about it and maybe own a few) but adoption for any and all purposes that it is useful for (store of value, remittances, merchant transactions...).

The bitcoin price isn't going on some huge inexplicable upwards streak, its following a standard adoption curve.

Alternatives to bitcoin have been around almost as long as bitcoin itself.  Since bitcoin is open source anyone can take the code, make a few minor or major changes and start their own alt-coin with its own block chain.

Given this it might seem that bitcoin itself has no value. It may be impossible to produce more bitcoins thereby making the currency itself deflationary but the production of other cryptocurrencies with their own blockchains that can essentially fulfil the same job and have all the same benefits might dilute bitcoin's share of the cryptocurrency market?

The problem with this viewpoint is it entirely discounts the role that momentum plays in the use of cryptocurrencies.  Litecoin may be technically able to operate in the same way as bitcoin and may even have a few minor advantages like the faster transaction confirmations but bitcoin is what people hear about first and judging on a variety of metrics it is what they will consider to be the 'primary' cryptocurrency.

This initial momentum has propelled bitcoin far further than any alt-coin.  Infrastructure is growing around bitcoin-only services in a way that alt-coins can only dream of.  Merchants and blogs accept bitcoin but not litecoin, the finance industry is creating funds around only bitcoin, mobile apps are being developed purely for bitcoin.  Even the main exchanges trade only bitcoin.  This growing infrastructure feeds the price of bitcoin which further widens the gap and helps to cement bitcoin's position at the top.

For anyone choosing to buy a bitcoin or a bunch of alt-coins, their decision will have to be backed by a judgement of the value of each.  For them to choose bitcoin is pretty straightforward - they can spend bitcoins online, they see bitcoin's value going up, bitcoins are in the news, there are bitcoin apps and they can transact with others that have them.

Choosing an alt-coin would imply that there is some benefit to the alt-coin over the bitcoin but alt-coins generally introduce no improvements to the bitcoin protocol and instead make simple tweaks like changing the hashing algorithm, claiming that it is better in some way than SHA-256, or tweaking other numbers like the confirmation time.

These efforts are minor and introduce no substantive benefit over bitcoin, so the decision is really down to which one is more widely accepted and/or has the best potential to make gains (if bought for speculation).

Alt-coins then that are nothing more than a tweaked carbon copy of bitcoin don't appear to have a rosy future.  But in the same way that Facebook started later and overtook MySpace and Friendster despite their momentum to become by far the dominant social network, it doesn't mean that bitcoin is unchallengeable.

What it does mean is that an alt-coin will have to replicate the advantages that bitcoin already has.

In terms of the infrastructure this will mean:

• Duplicating (and maybe improving) mobile apps across multiple devices
• Creating an exchange system worldwide to allow people to easily swap fiat currencies to and from the coin
• Publicising it / providing it with backing equal to the wide range that bitcoin has currently. 
  
• Somehow providing a secure hashing network

Such a currency isn't going to appear by someone altering a hash method in the bitcoin code and then uploading the software to a website.

If it comes from anywhere it will come from one or more well financed corporations.  Such a corporation could start their own coin, provide it with a lot of hashing power (perhaps centrally located initially but given enough cash and a well chosen hashing algorithm they could entice enough people in to build a critical mass of miners), create slick mobile and desktop apps to use it, provide exchange facilities both over the internet and maybe also on the ground via shops etc.

If orchestrated well enough and sold hard enough it could be seen as a viable alternative to bitcoin or even pushed as bitcoin's "successor".  

Even given this play though there are some hurdles that won't be easy to overcome.

Firstly, any developments that feature in the new coin may well be portable to bitcoin, meaning that bitcoin can update, pick up the improvements and carry on with all its entrenched users and infrastructure, leaving the alt-coin with no technical advantage.

Next, the hashing power of the mining network is crucial in securing it.  The higher the difficulty to find a block, the more difficult it is to attack the network and therefore the more secure it is.  In the earlier half of 2013 bitcoin's mining network was made up of graphics cards and ASICs were just starting to get going.  At such a stage it might have been possible for a corporation to provide a viable alternative but as ASICs have taken off so has the hashing power and difficulty and now replicating the bitcoin network would be a very difficult and expensive task indeed.  In addition, the hashing power of bitcoin is distributed and therefore safe from manipulation whereas a competitor would almost certainly have to be centralised as least to begin with putting it at a disadvantage.

Lastly, and particularly with centralised hashing power, any such alt-coin would be seen as being under the control of the organisation, much like Ripple. Its difficult to judge how many people out of the worlds population would care about the coin being under the control of an organisation rather than decentralised but decentralisation is a core concept of bitcoin.  Most people may not care but more tech-savvy users will.  In order to get around this the currency would have to fight technical users and appeal direct to end users.  This may be feasible with the right marketing effort but it is an avenue for strong criticism which is not available for bitcoin and therefore yet another disadvantage.

There are a lot of organisations that might be a good candidate in terms of their ability to start a CorporateCoin; Banks, Western Union, large end-user focused multinationals like Amazon, but one key question remains: what would their motivation be?

For small time alt-coiners the motivation is in most cases quite apparent, when we see stories in the news about someone buying 5,000 bitcoins for $25 and then using some of their new $850,000 value to buy an apartment when he remembered them a year or two later there is no doubt a strong feeling of envy and a desire to replicate the same conditions only with you as the early adopter.  If this is the only motivation for the alt-coin though it is doomed to fail.

For a corporation the motivation is less clear, although a corporation could have the same motivation (to place themselves as an early adopter - again like Ripple) to pose a real challenge to bitcoin would require a large investment and it would amount to no more than a risky gamble that gets more difficult to pull off with each passing day.

Whether an alt-coin will appear that really introduces something significant enough to make a dent in bitcoin is anybody's guess but the currently available alternatives aren't the ones to do the job.

The news recently has been awash with stories about how the FBI has confiscated bitcoins from Ross Ulbricht, operator of the illegal site Silk Road.

The most recent confiscation is of 144,000 bitcoins (around $29m at current prices).  The previous amount was 26,000 bitcoins (around $5m at current prices).

There's no question that Ulbricht has been detained by the FBI and has some major problems on his hands, he will almost certainly go to jail for a very long time, PopeHat estimates jail time of around 10 to 30 years.

The question though is what does 'confiscation' mean here?  The FBI may have encrypted wallets that contain the private keys to control these bitcoins but without the key to access the wallet they are useless.  I could stand outside Fort Knox and claim to have 'confiscated' all the gold within it.  Its within my sight so I've confiscated it right?  Except I can't actually get at the gold right now... and if the US government wants to come in and move that gold somewhere else then I can't stop them.

Both of those conditions potentially apply to Ulbricht's bitcoins.  Bitcoins aren't store anywhere, they are part of the network and blockchain.  The real 'owner' of the bitcoins is whoever knows the private key to make transactions with the wallet that holds them.

If the FBI doesn't know that private key (because its encrypted and they can't crack it) then they don't have any more control over the coins than you or I.  If Ulbricht has memorised or has a copy of the wallet seed then even now he retains control over the bitcoins (although his ability to exercise that control is no doubt currently limited).

Whether this changes in the future will likely depend on what mistakes Ulbricht made, what precautions he took and what leverage the FBI has to get the keys off him but it's quite possible, maybe even likely, that the FBI hasn't confiscated anything.

The speculation is that maybe the FBI has the encryption keys but is keeping the bitcoins in the same wallet but given the architecture of bitcoin this would leave them open to removal by anyone else at any time.  If Ulbricht did know the wallet seed he could get a message to someone to move them to another wallet and the FBI would lose them - why would they take that risk?  Instead it would make more sense that if they had the keys they would immediately move them to an FBI-controlled wallet.

I'm no fan of Ulbricht or Silk Road but in the past it hasn't been possible to claim that you've seized assets of a criminal without actually having control of them.  The new-to-the-world architecture of bitcoin and, perhaps more so, the relative lack of understanding of that architecture make this possible.  

Whether the FBI is using the term seize in a meaningful way or whether they will find in the coming years that their 'seized' bitcoins start disappearing through their fingers will be interesting.



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Bitcoin has been on an accelerating run for most of October now and has gone over $200 on the major exchanges leading many to speculate that it is in a bubble.

Last night though Bitcoin saw a large correction down from $230 to $190.  Despite this though the trend has picked up again and is edging towards $210 again.

If the current increase were fuelled purely by speculation then such a large and sharp correction would undoubtedly pop the bubble, likely provide a 'bounce' and allow bitcoin to settle at a reasonable value again, however the drop has worked out more like a blip in a long run.

Many are speculating as to what the source of the increase in value might be and most point to the recent story that Baidu (dubbed the 'Google of China' since it is the largest search engine in China and the 5th most visited website in the world) has started accepting bitcoin for its CloudFlare-like Jiasule service.   The idea is that this has increased public knowledge about bitcoin and a slightly larger share of the masses are once again gravitating towards buying a few.  Certainly the increase picked up speed after the Jiasule story broke around the 16th but bitcoin was already making significant gains since SilkRoad closed around the 8th.  While it is perfectly possible this is exactly the driver of the recent increases it ignores an entire section of growing and large scale buyers.

What we may be seeing is simple buying pressure from the wealth of startups around bitcoin.

Not every startup needs to retain large sums of bitcoin but some certainly do.  Recently Bitcoin Magazine reported that Western Union recently presented at a payments conference and assessed bitcoin as being 'not ready for primetime'.  Their criticisms though centered largely around the end user experience of bitcoin citing taxation issues, liquidity and consumer interfaces as the problems.

Western Union though are in a position to resolve all of these problems and install themselves as the 'go-to' place to make in-person bitcoin exchanges around the world.  Bitcoin Magazine themselves point out that Fox News ran an article back in April about bitcoin drawing Western Union but the article has since been deleted.

It is quite possible that Western Union can see the writing on the wall and, while publicly downplaying bitcoin are preparing internally to launch themselves as a large scale worldwide exchange or provide bitcoin based remittances in some other form.

Regardless of whether we think this is the case or not we know that VCs are investing heavily into bitcoin businesses right now and we will see a lot of startup activity over the next 12 months.  If we use Western Union as an example of this activity and as an example of some business that is adopting bitcoin to provide a service which does need to retain a large store of bitcoins for liquidity purposes it becomes easy to see how even one such business could cause significant price movements for bitcoin.

Looking at BitStamp's order book today with the price at $193 we can see that it would take just $250,000 to move the price by $10 to $203.  This would equate to a purchase of around 1,250 bitcoins.  While this is a large sum for an individual if Western Union were fulfilling an internal plan to soak up bitcoins to use for liquidity in a worldwide exchange / remittance service they would need far more than this and could alone end up pushing bitcoin prices tens of dollars.

Whether Western Union is the culprit or not it isn't difficult to imagine that some startup might be quietly filling its boots to launch its liquidity-sensitive service.

Richard Brown, IBM's executive architect discussed bitcoin in an excellent interview with Finextra, it's available at the following links (Finextra's servers are slow at present):

Bitcoin was invented by Satoshi Nakamoto, but who is he?  The name is just a pseudonym and probably has no connection to the actual author.  Satoshi was careful to remain anonymous and understood a lot about modern security so there is every reason to believe that the pseudonym was carefully chosen precisely because of its lack of connection (rather than cobbled together from something outside the authors window or sitting on their desk).

The suspects have typically been known cryptographers that fit the profile based partly on the type of language and formatting he used.  Britishisms in his communications led The New Yorker to finger Michael Clear (he has denied being Satoshi) and question whether other well known crypto experts might have invented it.

Others have suggested that since the communications also included American spelling the author behind the pseudonym might actually be a group of people collaborating.  This would help explain the high level of competence across multiple disciplines needed to invent Bitcoin and displayed by Satoshi in communications.

Bitcoin is seen as generally anti-government.  Realistic or not this is understandable since the creation of a new monetary system which technologically supersedes the current one but which has a cast-iron limit on the final quantity produced can be viewed as a challenge to fiat currencies around the world.

Governments are held to rely on fiat currencies since they can print money and devalue their own currency.  This reprices debt held in their currency in real terms (making it cheaper to service and also eventually inflating it away entirely - even with relatively small inflation the rule of 72 takes care of this in a time frame acceptable to a government).

Taking away this ability leaves governments with more politically volatile methods of raising money such as increasing taxes. This is especially problematic since in recessions and depressions - times when tax hikes are most needed - people already feel under financial pressure and are less likely to accept even more financial pressure from their elected representatives.

The invention of peer-to-peer networks to share content has had an indisputable and lasting effect on all content industries.

We are all aware that file sharing caused a major shake up in the record industry and film industry and the lengths they have gone to to shut down sites like Napster and The Pirate Bay.  However no amount of lobbying, court cases and even technological attacks has managed to make any real dent in file sharing or the peer to peer networks it uses.

Peer-to-peer networks by their nature, much like the internet itself, have no single point of failure.  It is this key attribute that gives them their resilience and allowed them to stand the test of time.  The sheer numbers win out over even the largest of wallets.

Whether you agree with file sharing and its effects on copyright holders or not, without accepting a severely restricted internet they and their effects are here to stay.

Bitcoin has been described as peer-to-peer money and the description is quite accurate.  The basis of the bitcoin network is a peer-to-peer network with no single point of failure where consensus determines the course of the currency.

The gradual tailing off of bitcoin production is designed to ensure deflation of the currency (holding or increasing its value in real terms as opposed to losing it for fiat currencies) and encourages those with a vested interest (the many that already hold bitcoins) to keep this the status quo.   Anyone therefore investing in bitcoin either for production or as a store of value is not apt to agree that they should be devalued by changing the algorithm to produce more.

This attribute of bitcoin then is set in stone, along with its other technological abilities.  Once bitcoin exists, there is no going back.

All this sounds like bad news for fiat currencies and governments across the world that rely on devaluing their currencies and inflating away debt.  If bitcoin was invented by an independent person or group then it is here to stay and might feasibly cause some trouble for governments.

But bitcoin isn't the first asset to hold its value in real terms.  Gold has been around and recognised as an asset (and frequently used as the basis for a monetary system) for millenia.  The existence of gold doesn't pose a threat to fiat currencies today so why should bitcoin?

The real issue comes if a deflationary currency becomes the world reserve currency and supplants the dollar.  If this were to happen then even the dominant superpower would be unable to inflate away their debts in what are (for them) real terms and other countries would be unable to take advantage of the same devaluation by keeping step - effectively repricing the value of all currencies around the world.  This sounds like a tall order in the extreme - and it is - but if bitcoin survives technological attacks then over the course of 50 years as new generations who are newcomers to both the dollar and bitcoin appear there is every reason to think they will treat bitcoin as the standard and fiat currencies as the dinosaur.

If bitcoin won't go away then much like the content industry change might simply be a matter of time.

If change is inevitable, then as many commentators have tried to point out the content industry, it is better to be in a position of strength than try to resist it and fail.

If the NSA with its world renowned cryptographers, lots of time and money on its hands, and eyes on all aspects of the world including the worlds financial systems and economies discovered bitcoin first they would be left with inescapable conclusions:

1. Bitcoin or its equivalent will be invented sooner or later
   
2. It will not be feasible to shut it down
3. Given the technological advantages it may (will?) eventually supercede traditional fiat currencies
4. It is better to be in the driving seat than watching from the sidelines

Faced with the discovery their best option would be to ensure that bitcoin turned out the way they wanted it to. They would want to be behind the invention and be in position to secure a majority of the currency before it became too difficult / expensive to do so.  This would cement their dominant position over time as the eventual effective owner of the new world reserve currency.

Certainly there is no doubt that whoever the creators of bitcoin were they were in a position to secure a very large number of bitcoins with minimal effort.  The bitcoin network may now run at 2 petahashes (roughly 25 exaFLOPs) and climbing fast but in the very early days any standard computer or network could compete and secure a large portion of the hashing power (and therefore bitcoins generated).  For an agency like the NSA it would be trivial to secure a large portion of the hashing power throughout bitcoin's early life.

This would leave the inventing government in a position of currency domination and while it would not be feasible to inflate the currency (print more of their reserve currency) they would at least have the vast majority of the reserves, perhaps orders of magnitude more than other countries.

So in the next few decades will bitcoin rise to become the dominant world currency while we will find that the USA inexplicably owns a large portion of it?  Maybe, but probably not.

In order for this scenario to work out a lot of things have to fall into place.  In particular the right people within the NSA have to both make the discover and come to the same possible conclusions and although the NSA has certainly surprised us over the course of the past few years there is little evidence that they were involved in any way.  An independent party disenfranchised by the recent large scale money printing is surely more likely to have invented the currency simply because they had a reason to try to do so - the NSA had no obvious reason to be investigating the possibility of a new deflationary technologically advanced currency.

Still, arguably more worrying is the thought that bitcoin could rise to dominance over time with one random computer programmer holding a large percentage of its value on his hard drive, although its probably no worse than the status quo.