Tag Archives: bitcoin


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Our mission

With bit4coin we provide the best tool for experienced bitcoiners to attract friends and family to the virtual currency, and a simple and easy-to-use portal into bitcoin for new users. We believe that by turning an abstract technology such as a virtual currency into a physical item like a gift voucher, we make bitcoin much more accessible to new users.
Our goal

We want to support world-wide bitcoin adoption. We believe bitcoin is money from the people, for the people, and want bitcoin to get into as many hands as possible. We are confident bitcoin is ready for the next wave of everyday users, beyond early adopters.
Security of processes and funds

We keep 100% of your funds with banking institutions in the European Union which are subject to deposit insurance. We convert funds to bitcoins when you redeem your vouchers, and keep bitcoins in secure wallets in various locations with multiple layers of security. In addition, we have sufficient funding to ensure reliable business operations.
Our company

We, bit4coin BV, are based in Amsterdam, Netherlands. Founded in 2013, we bring a lot of experience: Both co-founders have 8+ years experience in banking, management consulting, finance, and IT.


I Just Found a Great Description of Bitcoin

From a bitcoin forum called www.bitcointalk.org: Forget most things you’ve heard.  People discover Bitcoin in a variety of ways, but usually pick up some sort of misconception like “Bitcoin gives free money to people with computers” or “in order to use Bitcoin I have to use a program that wastes electricity for nothing” along the way.  Here is a good summary to help you understand Bitcoin in general, by focusing on what Bitcoin is and what problem it solves.  These two things are not typically well explained on most websites, and it is difficult to appreciate just how effective a technology Bitcoin is until they are understood.

What Bitcoin is:  An agreement amongst a community of people to use 21 million secure mathematical tokens–“bitcoins”–as money, like traditional African and Asian societies used the money cowry.  Unlike the money cowry:

  • there will never be more bitcoins
  • they are impossible to counterfeit
  • they can be divided into as small of pieces as you want
  • and they can be transferred instantly across great distances via a digital connection such as the internet.

This is accomplished by the use of powerful cryptography many times stronger than that used by banks.  Instead of simply being “sent” coins have to be cryptographically signed over from one entity to another, essentially putting a lock and key on each token so that bitcoins can be securely backed up in multiple places, and so that copying doesn’t increase the amount you own.

Because bitcoins are given their value by the community, they don’t need to be accepted by anyone else or backed by any authority to succeed.  They are like a local currency except much, much more effective and local to the whole world.  As an example of how effective the community is at “backing” the bitcoin: on April 4th 2011 30,000 bitcoins were abruptly sold on the largest Bitcoin exchange, consuming nearly all “buy” offers on the order book and dropping the price by nearly 1/3.  But within a couple of days, the price on the exchange had fully rebounded and bitcoins were again trading at good volumes, with large “buy” offers slowly replacing the ones consumed by the trades.  The ability of such a small economy (there were only 5 million out of the total 21 million bitcoins circulating then, or about 3.75 million USD worth at then-current exchange rates) to absorb such a large sell-off without crashing shows that bitcoins were already working beautifully.

What problem Bitcoin solves:  Mathematically, the specific implementation of the bitcoin protocol solves the problem of “how to do all of the abovewithout trusting anyone“.  If that sounds amazing, it should!  Normally a local currency has to trust all kinds of people for it to be able to work.  So does a national currency.  And in both cases, that trust is often abused.  But with Bitcoin, there’s no one person who can abuse the system.  Nobody can print more money, nobody can re-use the coins simply by making a copy, and nobody can use anyone else’s coins without having direct access to their keys.  People who break its mathematical “rules” simply end up creating a whole different system incompatible with the first.  As long as these rules are followed by someone, the only way Bitcoin can fail is for everyone to stop using it.

This marvelous quality of not having to trust anyone is achieved in two ways.  First, through the use of cutting-edge cryptography.  Cryptography ensures that only the owner of the bitcoins has the authority to spend them.  The cryptography used in Bitcoin is so strong that all the world’s online banking would be compromised before Bitcoin would be, and it can even be upgraded if that were to start to happen.  It’s like if each banknote in your pocket had a 100-digit combination lock on it that couldn’t be removed without destroying the bill itself.  Bitcoin is that secure.

But the second way of securing the system, called the blockchain, is where the real magic happens.  The blockchain is a single, authoritative record of confirmed transactions which is stored on the peer to peer Bitcoin network.  Even with top-notch digital encryption, if there was no central registry to show that certain bitcoins had already been “paid” to someone else, you could sign over the same coins to multiple people in what’s called a double-spend attack, like writing cheques for more money than you have in your account.  Normally this is prevented by a central authority, the bank, who keeps track of all the cheques you write and makes sure they don’t exceed the amount of money you have.  Even so, most people won’t accept a cheque from you unless they really trust you, and the bank has to spend a lot of money physically protecting those central records, whether they are kept in a physical or digital form.  Not to mention, sometimes a bank employee can abuse their position of trust.  And, in traditional banking, the bank itself doesn’t have to follow the rules you do–it can lend out more money than it actually has.

The blockchain fixes all these problems by creating a single master registry of the already-cryptographically-secured bitcoin transfers, verifying them and locking them down in a highly competitive market called mining.  In return for this critical role, the Bitcoin community rewards miners with a set amount of bitcoins per block, taken from the original limited quantity on a pre-agreed schedule.  As that original amount gradually runs out, this reward will be replaced by fees paid to prioritise one transaction over another–again in a highly competitive market to ensure the lowest possible cost.  The transactions are verified and locked in by the computational work of mining in a very special way so that no one else can change the official record of transactions without doing more computational work than the cumulative work of all miners across the whole network.

In conclusion:  All this mathematical technology may be a bit of a mouthful, but what it means in practice is that Bitcoin works just like cash.  Bitcoin transactions are intentionally irreversible–unlike credit cards or PayPal where chargebacks can invalidate a payment that has already been made.  And there are no middlemen.  Transactions are completed directly between the sender and the receiver via the peer to peer network.

Because of Bitcoin’s intricate design, the network remains secure no matter where or how you process Bitcoin transactions.  Which is incredible–no one else has ever tried to create a system that worked this way!  All previous monetary systems have relied on trusting somebody, whether it was the king, town hall, the federal reserve, or banks.  Bitcoin doesn’t.  It’s guaranteed instead by the laws of mathematics, and that’s why it has everyone from technologists to economists very excited.  I’m sure you have lots more questions, so scan the index below to see if they’ve been asked before, then dive in!  The so-called “canonical” threads linked from this index are considered newbie-friendly zones; outside of them you’re welcome to try your own luck.

For the full post and thread please check out www.bitcointalk.org. Chris

Bitcoin Charts and Bubbles

stages_bubbleThe other day I came across this rather funny graph that I found while reading another article on bitcoin by Jesse Colombo of Forbes called “Bitcoin May Be Following This Classic Bubble Stages Chart“. In the article Colombo compares the rise and fall of bitcoin prices to that of Dr. Jean-Paul Rodrigue’s “Stages in a Bubble” in which enthusiasm leads to greed and then delusion only to be followed by a massive slide back to reality… which is still upwards but nowhere near the flamboyant “highs”.  Now I’m all for bitcoin! But I do think that rampant speculation and human greed has pushed it too high too quickly. Corrections are a given. The best technical charting I’ve seen for bitcoin can be found at bitcoincharts.com where you are able to access such charting capabilities as MACD, Aroon Up/Down, Chaikin Volatility and Commodity Channel Index. Check out the link I just mentioned and it will take you to an updated graph that includes those same technical indicators.  So what’s Colombo’s position on BTC?

I plan to eventually take a position in Bitcoin (in addition to precious metals and other hard assets) for my portfolio as a hedge against an eventual global economic crisis that I foresee occurring due to the popping of numerous post-2009 economic bubbles as well as the ensuing debasement of currencies that would occur as a reaction to this economic crisis. For now, I am waiting for the current froth to blow over before buying in.

As for me… I still own some bitcoin… and I still mine it and yes I’m still selling my art for it!

Chris S

JPMorgan’s “Bitcoin-Alternative” Patent Rejected (175 Times)

So… if bitcoin is a bubble or ponzi scheme then why is JP Morgan trying so desperately to patent it’s own version of it? To add fodder to the conspiracy canon… if bitcoin is part of a Hegelian dialectic, that is to say if the bankers themselves surreptitiously created it to then have it take over as the “one world currency”, then why did they do such a bad job of protecting their interests? Bitcoin is open source and cannot be patented. So maybe the “bitcoiners” are bang on! More from Tyler Durden of Zero Hedge:

Earlier in the week, we detailed JPMorgan’s attempt to create their own “web cash” alternative to Bitcoin (and Sberbank’s talk of doing the same). However, as M-Cam details, following the failure of the first 154 ‘claims’, JPMorgan issued a further 20 claims – which were summarily rejected (making JPMorgan 0-175 for approved claims). As they note, The United States Patent & Trademark Office (USPTO)’s handling of applications like JPMorgan’s ‘984 application (“Bitcoin Alternative”) highlights the need to fix a broken system – patent applications of existing inventions need to be finally rejected and not be resurrected as zombies (no matter how powerful the claimant). Full story here

Yes I hold and mine bitcoin. I also sell my art for bitcoin. The above article is one of the many reasons I do so.