pátek 29. prosince 2017

Bitcoin propaganda: "Market cap" is larger than XY

Market capitalization is a term coming from stock markets. It's simply the current share price times number of shares which make up the company.

For instance: If Google trades at $1000 and there are 693 mil. shares, Google is said to have market capitalization of $693 bn.

Same with Bitcoin: There are 21m Bitcoins, or around 17m, depends on what you count. So Bitcoin is said to have a market capitalization of $336 billions.

Now imagine you sell a matchstick to someone for three dollars. There are 500 billions of matches in the world. From the logic of Bitcoin, the market capitalization of matches is $1500 billions.

With companies, the market capitalization makes some sense - in normal situation, i.e.  when there is no mania about some particular stock title (like with Amazon nowadays) or sector (like with internet startups stocks in 1999). In such normal situation, the value is derived from the history of earnings deliveries and hard data like number of users, estimated earnings growth (based on subscriptions, pre-orders or projected sales growth), debt, cash reserves, assets and so on. Very often, such market capitalization oscillates around  12 to 25 years of return on investment.


With Bitcoin, that number can't be calculated. Bitcoin does not have any assets,  earnings. That is important, because that sets the price free of any anchor which could guide the buyers on what price it is rational to buy at. As a substitute for such guidance, various crazy comparisons are pushed by Bitcoin propaganda: Bitcoin as a substitute for gold (which is nonsense, see the other post), Bitcoin as a substitute for dollar, Bitcoin as 1 % of world wealth (betting on a silly idea that everyone will put 1 % of their wealth to Bitcoin for some reason), ... some simply just shoot some random high number with some "shocking" statement, like John McAffee that Bitcoin will be worth $500,000, otherwise he will "eat his dick on national television". Which, for some, is enough guarantee to go buy Bitcoin.

If someone started selling shares of a successful company like Google, the price would probably never drop under certain level, probably around 8 years of return on investment. Even under very hard financial circumstances, there would always be someone who would buy such obvious sell-off (and later get much richer). This is called liquidity.

Bitcoin has almost no liquidity. Liquidity does not mean that you can go sell it now (although Bitcoin has problems there even in normal situation). Liquidity means that the asset can be sold in substantial amount in short time without affecting it's price. With Bitcoin, it's the opposite: If a single large holder decides to sell all of it, the price drops very quickly. One reason is that the demand is not that large afterall, and many of the buy orders at the exchanges are provenly fake (their purpose is to pump the price up). Other reason is that selling would happen at one exchange, and the arbitrage doesn't still work well for cryptocurrencies - which leads to amplified rises and drops of the exchange ratio that do not reflect the amount of the capital moved in or out.

Bitcoin price not represent a price that everyone who uses it (or better said, holds it) would buy it for. Due to a limited supply, the "hodl" culture and demand waves mainly from notoriously bad asian retail investors (i.e. small amateur investors), the price is simply the price that the last fool was willing to pay.

Bitcoin was designed for this to happen, and includes a great feature to give no limit to such retail investing bubble: Divisibility. Nobody really uses the amout of 1 Bitcoin. Instead, fractions of that can be transferred or exchanged. This makes it possible to buy e.g. 0.01 Bitcoin, which is ideal for a bubble asset, because you can take any small amout of real money and buy Bitcoin for that.

Many people then follow this logic: If there is a small chance that Bitcoin will cost 30-times more in few years, I will put some small amount of money to it which I won't regret if I loose them completely, and if it works out, I will have 30 times more.

The two things above combined lead to a global demand for a semi-constant supply (currently 12.5 BTC every 10 minutes on average), which drives the price to the ridiculous levels.

Finally, this ridiculous price is multiplied with the number of Bitcoins mined so far, and you get a nonsensical number which is then presented as "value of all Bitcoins". Don't get fooled - in the future, everyone will want their money back, and expect to sell at those ridiculous prices. The fall will be even faster than the rise - and the reason why is described in another post: "Bitcoin propaganda: Bitcoin is a storage of value".

čtvrtek 28. prosince 2017

Bitcoin myth: Bitcoin is anonymous

Bitcoin is not anonymous. The idea that you are untraceable comes from the fact that the transactions happen between generated numeric addresses. That doesn't make it anonymous - it's called pseudonymous.

With sufficient data about where do the transaction originate, where did it go to be exchanged for real money and which bank the transfer was made to, regulatory bodies and criminal prosecution agencies are able to trace quite precisely the individuals behind the transactions.

Demonstrations of how non-anonymous Bitcoin is are arresting of several Bitcoin fraudsters who tried to hide behind complex patters of Bitcoin transactions, but eventually were found - for instance, Alexander Vinnik.

The principle is simple: The state controls most of the ways where Bitcoin can be actually spent in large amounts. If they failed to prove the origin of Bitcoin income, they would charge criminal offenses. So these organizations mostly relay the responsibility to the sender, by arming heavily with real identity documents. Those who don't aren't typically trustworthy partners to launder your money. And the worst idea is to spend your large sum little by little - you'd provide the investigators a great network of traces which would quickly lead to you.

Bitcoin myths: Bitcoin is safe

Stating that Bitcoin is safe is quite misleading.

There are different levels of safety. Bitcoin is safe in a way. The myth about Bitcoins safety comes from the algorithms used to authorize a transaction request. Strong hashing algorithms are used for that, involving long private and public keys. Therefore, it is currently impossible to compute a private key for a public key, so you can't order a transaction without having the private key.

However, the weakest point of existing financial systems never was a weak encryption. Modern banks use 2 factor authentication, which means that besides a password, you have to confirm a login or a transaction with an additional secret passed through an independent channel, typically a cell phone over GSM.

Most often, it is the user who makes the whole system vulnerable.

With Bitcoin, which completely relies on a single point of security (strong private key), once the key is leaked to anyone, your money are immediately unsafe. Even worse: It is impossible to know whether the key has leaked or not. Even worse: The only way to find out that it was leaked is when all Bitcoins are transfered to other address. And the worst: There is no way to get it back - because Bitcoin, by design, has no "revert" option.

Leaking the private key is easy: In a situation when more than half of personal computers are infected with a virus, it's foolish to assume their users will be able to safely operate with Bitcoin key. Even if you keep your disk encrypted and the key in an encrypted file, each time you perform a Bitcoin transaction, the key can be stolen by a malware.

Bitcoin enthusiasts will operate with two options: Hardware wallet, or paper wallet. Both are impractical. Hardware wallet is something you need to carry around whenever you want to perform a transaction. If you loose it, you loose your Bitcoins. To prevent loosing them, you need to have a recovery data. But if you have recovery data which can be stolen - why have a hardware wallet?

If you suspect your private key was leaked (someone has stolen your cell phone, you had a virus, ...), there is no way to revoke it. The only thing you can do is to create a new wallet with a new key and send all the Bitcoins there. But if the old wallet is where you were receiving payments, every place you distributed the old Bitcoin address to would have to get the update - which is impossible: All emails sent, all QR codes printed, all "Donate to" footers in forum posts, all address books of your regular payers.

The cases when someone's wallet was emptied are very common. I suggest you to go to any larger uncensored Bitcoin Facebook group and look for the desperate people seeking advice. The answer is always: You're screwed, all is lost.

That's not how a safe payment system works.

Bitcoin propaganda: Bitcoin will displace banks

It's a common motivation for Bitcoin fans, or more generally, crypto fans, that it will displace banks. The idea is that when you have ...