What is Bitcoin?
In the simplest terms, Bitcoin is a decentralized way to make transactions.
Bitcoin is the first ‘cryptocurrency’. It is the first and most popular way that we have so far to conduct transactions digitally and, theoretically at least, securely and without an intermediary.
A transaction means to buy or sell something. Normally, when we buy or sell things digitally, a third party or ‘intermediary’, usually a bank, validates each transaction and makes sure that neither party is trying to scam anyone, for example, by sending the same money to two different people at the same time.
The decentralized part of Bitcoin means that it is not necessary to trust one company or individual to keep an accurate log of your transaction or to verify it because everyone has a log of every transaction (this is oversimplified but is essentially how it works). A copy of all the transactions that have ever happened is stored on every Bitcoin user’s hardware. This log of transactions is called the blockchain.
Basically, Bitcoin is a tool that people can use to buy and sell things without having to rely on a bank as a middle-man.
Is Bitcoin a good alternative to use as money to complete transactions? Is Bitcoin a good long-term investment? Well, as with most things in life, it depends.
Here’s what’s good about Bitcoin.
- Bitcoin is in Limited Supply – There will only ever be 21 million bitcoin in existence. Because of the way bitcoin is designed, it is ‘deflationary’. That means that no more than 21 million Bitcoin can ever be made or ‘mined’. So if people want it, the price should keep going up because they won’t be able to make any more of it. This differentiates bitcoin from regular money or ‘fiat’ currency. With fiat money like USD, CAD, and most other national currencies, governments continually introduce new money into circulation. For example, in the US, 26% of all US dollars that have ever existed were created in 2020. These types of money are called ‘inflationary’ because the supply is not constrained. What this means, in practice, is that dollars tend to buy less every year that you hold onto them. Other commodities like gold, tend to increase in value over time because there is a limited supply, and creating more gold is difficult because you have to find it or mine it. Bitcoin, similarly, is limited to 21 million bitcoins, ever. As of February 2021, we’re at about 18.5 million Bitcoin in existence and it takes a lot of computing power to generate a new Bitcoin. Because the supply of Bitcoin is constrained, as long as the demand keeps rising, the price for Bitcoin should also rise.
- Bitcoin is Easily Divisible – The smallest unit of bitcoin is called a ‘Satoshi’ and it’s one hundred-millionth (0.00000001) of a Bitcoin. Right now, one USD = 2,037 Satoshi. Dollars, like Bitcoin are divisible into cents. This makes it easy to buy something that costs less than a full unit. Gold was a good currency in the past for this reason as well. Because it is malleable, you can easily break up a block of gold into smaller chunks. Often, prices were measured in the weight of gold or other precious metals. The British Pound, in fact, used to be called the ‘Pound Sterling’ and gets its name because it used to be the case that British money was measured in pounds of sterling silver. In 1865, a person could exchange 1 US dollar for 1.5 grams of gold. Bitcoin, like gold and money is easily divisible, so that means you can easily buy smaller and larger things with it.
- It is Fairly Secure – Bitcoin is called a ‘cryptocurrency’ for good reason. It is built on cryptography – the science of cracking codes. The foundations of Bitcoin are based on something called a Secure Hash Algorithm. Secure hash functions make it very difficult to reverse engineer a private key from a public key. Taking a step back, for each bitcoin wallet there are two keys, a private key and a public key. The public key is like your address, it tells people where they can deliver your Bitcoin. The private key, is more like the key to your front door. With the private key, you gain access to all of the bitcoin inside of the wallet. What this means, in practice, is that it is very difficult to guess someone’s private key. In fact, it’s so difficult that, with today’s technology, we can say that it is impossible. I say that Bitcoin is ‘fairly’ secure because breaking into someone’s wallet can happen through more ways than picking the lock on their front door. Unfortunately, most people have to go outside. What this means in our analogy for Bitcoin is that people need to access their bitcoin and doing this often leads to them interacting with third parties like cryptocurrency exchanges (think BlockFi or Wealthsimple Crypto). Quantum computers may also pose a risk to the integrity of Bitcoin’s algorithm. More on that later. Essentially, Bitcoin is incredibly secure, it’s only when you introduce complexities (like exchanges) that you run into challenges.
- It’s Popular – Six days ago, on Feb 19, 2021 the market capitalization of Bitcoin hit $1 Trillion. Major companies like Tesla and Apple are starting to hold some of their cash in Bitcoin. In fact, Tesla has made more money from the increase in price of Bitcoin than it has from car sales to-date. The total market capitalization of Gold is $10 Trillion, that means that Bitcoin is about 1/10th the size of Gold in terms of total value in existence. The total market capitalization of Silver is around $1.5 Trillion, so Bitcoin is almost as big as silver! That’s good news for Bitcoin because the fact that it is so popular means that it is in demand, and as long as people want it, and the supply remains constrained, the price should keep rising. Bitcoin being popular is also good because it means that it’s more likely that someone will let you use it to buy things with. PayPal recently started allowing users to buy and sell goods with Bitcoin and BlockFi is releasing one of the first credit cards that delivers 1.5% ‘cash-back’ in the form of BTC (the symbol for Bitcoin).
- It has been (extremely) Profitable – in 2015, I bought one Bitcoin from a Bitcoin ATM in Toronto Canada for $300. The price of Bitcoin passed $70,000 Canadian last week. That’s a 23,000% return on investment in only 6 years! Some analysts predict that the price of Bitcoin may exceed $500,000 in the next few years. Obviously, continued profitability will depend on continued demand. Because the supply of Bitcoin is constrained, as long as the demand keeps increasing, the price of Bitcoin will as well.
There are a lot of great things to say about Bitcoin. Full disclosure, about 10% of my portfolio is in Bitcoin and other cryptocurrencies #DogeToTheMoon. However, there are also some potentially catastrophic downsides as well. I wouldn’t feel comfortable releasing a video on any subject if I didn’t cover both the positives and the drawbacks.
There are a few problems with Bitcoin, some of them major.
- Scalability Problem – Bitcoin transactions are fairly slow to process (the network is capped at about 7 transactions per second), this is known as the ‘scalability problem’ and it has a number of solutions that range from bundling transactions to involving intermediaries and even creating offshoot cryptocurrencies with higher transaction capacities (see Bitcoin Cash). This is a problem because if you want something to be useful as money, it needs to be able to be used quickly. Visa, for example, handles about 65,000 transactions per second. For Bitcoin to take its place as money it needs be able to change hands much quicker than is possible right now.
- Trust Problem – Most of the time, people are not interacting directly with the blockchain and are going through a trusted intermediary to buy and sell Bitcoin i.e. buying Bitcoin through BlockFi or Wealthsimple Crypto. One of the main benefits of bitcoin that we discussed previously was it ‘decentralized’ nature. Unfortunately, without an intermediary, it can be difficult to buy and sell Bitcoin. This opens up some of the same trust and security issues that we have with traditional digital currencies.
- Energy Problem – Bitcoin is really all about energy. In order to make sure that transactions are valid, a whole bunch of computing power is required. The creation of Bitcoin, similarly involves the use of massive amounts of computing power and, therefore energy. Recent estimates put annual Bitcoin Mining energy consumption at around 121.36 terawatt-hours per year. This is 1/5 of the energy that the country of Canada uses in an entire year.
- Intrinsic Value Problem – One of the problems with Bitcoin is that it does not have any real-world use outside of buying and selling things. While it is a useful tool for buying and selling other real-world goods and services, Bitcoin has no use outside of this. Throughout history, metals like gold and sliver were used as money, but they were also highly sought after because they could be used for other purposes like making jewelry, and later in electronics. The money that we use today, dollars, is similar to Bitcoin in that it does not have any intrinsic value. The property that gives money its value today is simply that other people will accept it. Some economists argue that fiat money (the kind of money we use today) gets its value from the fact that you need it to pay your taxes.
- Disappearing Problem – If you lose your private key, your Bitcoin is as good as gone forever. One man lost $250 million in Bitcoin when his girlfriend threw out his old laptop. I myself lost a Bitcoin when the receipt paper that my private key was printed on faded into oblivion. That cryptographic hash function is definitely secure. I tried every method I could to retrieve the missing Bitcoin including using UV light to try to decipher the faded paper and making an Excel script to try to guess the missing digits. No luck! That Bitcoin is gone forever.
- Hedging Problem – Assets like gold and silver tend to be less volatile than the stock market (they go up and down in value less often). Investors often hold gold and silver as a ‘hedge’ to stocks because, often, when the stock market falls, the price of gold and silver rises. So far, Bitcoin has traded in the same direction as the stock market, so if the stock market is falling, so is Bitcoin. That could make Bitcoin a poor choice as a ‘hedge’ against market fluctuations. (Of note, on February 25, 2021 as of market close, many stocks were down almost 10%, Bitcoin, as of this writing is only down 4% on the day. Could this be a sign of a reducing correlation between Bitcoin and the stock market?)
- Volatility Problem – The price of Bitcoin is very volatile compared to fiat currency. Although the price trends upward, Bitcoin often drops in value by 10% or more in a single day and has dropped in value by as much as 65% in one month! Imagine buying a jug of milk for $10 today, and then, next month when you went to the store to buy milk, that same jug of milk cost you nearly $30, that is what a 65% drop in the value of the dollar would look like. It would be very difficult to predict how much money you needed to buy groceries and meet your basic needs.
- Copycat Problem – Bitcoin is not the only cryptocurrency in existence. Many others exist that are built on similar principles. Etherium, the second most popular cryptocurrency, for example, has a market capitalization of almost $200 billion, so it is comparable gold and silver in relative market sizes. Theoretically, a new, better cryptocurrency could emerge at any time. Maybe that new cryptocurrency helps solve one of the problems with other cryptocurrencies mentioned before like the energy problem or the scalability problem.
Despite the drawbacks, many large companies, governments and individuals are heavily investing into bitcoin and the technology that it is based on. Because of its limited supply and continued popularity, I see few reasons why Bitcoin will not reach $500,000 or even $1 Million in the years to come. Is Bitcoin the future of money? I don’t think so. Governments will not want to give up their control of the money supply and are already investigating ways to digitize their currencies. Many countries have banned Bitcoin and other cryptocurrencies, citing its use in illicit activities like drug smuggling and money laundering. Governments likely also fear that if Bitcoin takes over as the dominant currency, they will lose the ability to create more money. This would impact their ability to stimulate spending and to reduce the burden of government debt through inflation.
I do believe, however, that Bitcoin is a good long-term investment. It can be a store of wealth that individuals and companies use in addition to other assets and investments. Despite my lost investment, Bitcoin is here to stay and I’ll keep adding it to my portfolio until I see some evidence that its place as the dominant cryptocurrency may be changing.