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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Petr Hoffmann // Shutterstock
Three hundred thirty-one years ago, the first piece of paper money was printed in the United States. The Massachusetts Bay Colony supposedly issued those first bills to fund military action in King William’s War. Flash forward to today, and those bills are as ubiquitous as the British pound or Chinese renminbi. In recent years, however, there have also been talks that those bills may be replaced with a newer form of money altogether: cryptocurrency.
What is cryptocurrency? Is it really likely to replace our current cash system? Stacker answers all these questions and more in our closer look at Bitcoin and the world of cryptocurrencies. Using news reports, financial websites, and industry resources, we’ve answered the 10 most pressing questions you have about cryptocurrencies. While the topic is a complex one, we’ve done our best to discuss it in layman's terms and have avoided the more highly technical aspects that tend to bog down the discussion rather than carry it forward.
So read on to learn who invented this new form of money, how it’s mined, and what, exactly, Elon Musk has to do with it all. You’re sure to walk away with a better understanding of what Bitcoin is and how it affects your life.
You may also like: History of the supermarket industry in America
Petr Hoffmann // Shutterstock
Three hundred thirty-one years ago, the first piece of paper money was printed in the United States. The Massachusetts Bay Colony supposedly issued those first bills to fund military action in King William’s War. Flash forward to today, and those bills are as ubiquitous as the British pound or Chinese renminbi. In recent years, however, there have also been talks that those bills may be replaced with a newer form of money altogether: cryptocurrency.
What is cryptocurrency? Is it really likely to replace our current cash system? Stacker answers all these questions and more in our closer look at Bitcoin and the world of cryptocurrencies. Using news reports, financial websites, and industry resources, we’ve answered the 10 most pressing questions you have about cryptocurrencies. While the topic is a complex one, we’ve done our best to discuss it in layman's terms and have avoided the more highly technical aspects that tend to bog down the discussion rather than carry it forward.
So read on to learn who invented this new form of money, how it’s mined, and what, exactly, Elon Musk has to do with it all. You’re sure to walk away with a better understanding of what Bitcoin is and how it affects your life.
You may also like: History of the supermarket industry in America
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Open Studio // Shutterstock
First things first: What is a cryptocurrency? In short, they are digital currencies that are protected by cryptography (a method of safeguarding information through complex codes). This encryption makes them incredibly secure and almost impossible to counterfeit or double-spend. Most cryptocurrencies work using a new technology called blockchain, a decentralized technology that's spread across many computers.
Open Studio // Shutterstock
First things first: What is a cryptocurrency? In short, they are digital currencies that are protected by cryptography (a method of safeguarding information through complex codes). This encryption makes them incredibly secure and almost impossible to counterfeit or double-spend. Most cryptocurrencies work using a new technology called blockchain, a decentralized technology that's spread across many computers.
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Gorodenkoff // Shutterstock
As stated above, blockchains are a new form of technology that records information. Termed distributed ledger technology, these blockchains keep records across a large number of computers (rather than on a single computer server), grouping the data in sequential blocks. Once locked into place, these blocks cannot be changed or altered, meaning that records of who mined a currency or spent it are never called into question, and cryptocurrencies can never be stolen the way a credit card can.
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Gorodenkoff // Shutterstock
As stated above, blockchains are a new form of technology that records information. Termed distributed ledger technology, these blockchains keep records across a large number of computers (rather than on a single computer server), grouping the data in sequential blocks. Once locked into place, these blocks cannot be changed or altered, meaning that records of who mined a currency or spent it are never called into question, and cryptocurrencies can never be stolen the way a credit card can.
You may also like: The best streaming services in 2021
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
insta_photos // Shutterstock
No. By their very definition, Bitcoin and other cryptocurrencies are completely democratic and aren’t overseen by a central authority in the way that the U.S. dollar is. A true peer-to-peer payment network, cryptocurrencies can only work if all participants use the same software and abide by the same rules. This provides a strong incentive for a consensus to be maintained, or else Bitcoin will cease to have any value and all users will lose their cryptocurrency wealth.
insta_photos // Shutterstock
No. By their very definition, Bitcoin and other cryptocurrencies are completely democratic and aren’t overseen by a central authority in the way that the U.S. dollar is. A true peer-to-peer payment network, cryptocurrencies can only work if all participants use the same software and abide by the same rules. This provides a strong incentive for a consensus to be maintained, or else Bitcoin will cease to have any value and all users will lose their cryptocurrency wealth.
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Mark Agnor // Shutterstock
The interesting thing about cryptocurrencies, and bitcoin, in particular, is that they are largely self-perpetuating (with the exception of the genesis block). New bitcoins are mined (or minted) by being the first person to correctly verify one megabyte of existing bitcoin transactions. This is incredibly time-consuming work that involves a lot of computation power, but these days it is not the only way to obtain bitcoin. Bitcoin can also be bought or earned by doing things like publishing an article on a website that pays via cryptocurrency.
Mark Agnor // Shutterstock
The interesting thing about cryptocurrencies, and bitcoin, in particular, is that they are largely self-perpetuating (with the exception of the genesis block). New bitcoins are mined (or minted) by being the first person to correctly verify one megabyte of existing bitcoin transactions. This is incredibly time-consuming work that involves a lot of computation power, but these days it is not the only way to obtain bitcoin. Bitcoin can also be bought or earned by doing things like publishing an article on a website that pays via cryptocurrency.
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Petr Hoffmann // Shutterstock
Yes, and no. In 2021, much of what cryptocurrencies are is more theoretical than practical, which is further demonstrated by their purchasing power—or lack thereof. While bitcoin can and has been used to buy real things (you can use a third-party app called Purse to use bitcoin to buy items on Amazon, and it has often been used on the Silk Road to buy drugs), you certainly can’t just walk into a grocery store and buy a gallon of milk with a bitcoin or two. In fact, even apps like Purse or PayPal, which allow purchases to be made with bitcoin, convert the cryptocurrency into fiat money before making the transaction, so you aren’t technically spending that bitcoin or Dogecoin, but rather its legal tender value.
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Petr Hoffmann // Shutterstock
Yes, and no. In 2021, much of what cryptocurrencies are is more theoretical than practical, which is further demonstrated by their purchasing power—or lack thereof. While bitcoin can and has been used to buy real things (you can use a third-party app called Purse to use bitcoin to buy items on Amazon, and it has often been used on the Silk Road to buy drugs), you certainly can’t just walk into a grocery store and buy a gallon of milk with a bitcoin or two. In fact, even apps like Purse or PayPal, which allow purchases to be made with bitcoin, convert the cryptocurrency into fiat money before making the transaction, so you aren’t technically spending that bitcoin or Dogecoin, but rather its legal tender value.
You may also like: History of workers' strikes in America
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Scharfsinn // Shutterstock
So if you can’t spend a bitcoin or unit of cryptocurrency, why were they invented? The answer may lie in the text of the genesis block of Bitcoin, which reads: “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks.” (Alluding to a headline from The London Times.) This seems to imply that the founder had a lack of faith in the banking system and was looking for an alternative way to store and protect their wealth, as well as wanting to disrupt the control of the money supply and empower the individual when it came to their finances.
Scharfsinn // Shutterstock
So if you can’t spend a bitcoin or unit of cryptocurrency, why were they invented? The answer may lie in the text of the genesis block of Bitcoin, which reads: “The Times 03/Jan/2009 Chancellor on brink of second bailout for banks.” (Alluding to a headline from The London Times.) This seems to imply that the founder had a lack of faith in the banking system and was looking for an alternative way to store and protect their wealth, as well as wanting to disrupt the control of the money supply and empower the individual when it came to their finances.
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Canva
Bitcoin is widely considered to be the world’s first cryptocurrency. Yet, despite having existed for just over a decade, no one actually knows who founded it. The original Bitcoin whitepaper thate outlines how the currency works was published by Satoshi Nakamoto, the same person who mined the first bitcoin block, but the individual’s (or group of individuals’) identity remains a mystery. There are dozens of theories out there about who they are, but none have been definitively proven, making this a Holy Grail-level mystery of our time.
Canva
Bitcoin is widely considered to be the world’s first cryptocurrency. Yet, despite having existed for just over a decade, no one actually knows who founded it. The original Bitcoin whitepaper thate outlines how the currency works was published by Satoshi Nakamoto, the same person who mined the first bitcoin block, but the individual’s (or group of individuals’) identity remains a mystery. There are dozens of theories out there about who they are, but none have been definitively proven, making this a Holy Grail-level mystery of our time.
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Yuriy Maksymiv // Shutterstock
Financial pundits aren’t yet convinced that Bitcoin, or similar cryptocurrencies, will replace the dollar, pound, or yen in any real way. However, as a scientific and technological innovation, cryptocurrencies are massively important. In particular, the blockchain system that governs most of these currencies has the power to change the future. Blockchain allows us to move information securely and authentically and can be adapted for things like voting, maintaining inventory records, and identifying exploited labor practices.
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Yuriy Maksymiv // Shutterstock
Financial pundits aren’t yet convinced that Bitcoin, or similar cryptocurrencies, will replace the dollar, pound, or yen in any real way. However, as a scientific and technological innovation, cryptocurrencies are massively important. In particular, the blockchain system that governs most of these currencies has the power to change the future. Blockchain allows us to move information securely and authentically and can be adapted for things like voting, maintaining inventory records, and identifying exploited labor practices.
You may also like: The best streaming services for sports in 2021
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
DaLiu // Shutterstock
The number of cryptocurrencies is always growing, so it can be difficult to pin down an exact count, but as of April 2021, there were over 10,000 different types of cryptocurrency. This includes coins, like bitcoin and Dogecoin, as well as tokens, which represent a tradable asset or utility (like 10 hours of free streaming on a service or a certain number of loyalty points from a company).
DaLiu // Shutterstock
The number of cryptocurrencies is always growing, so it can be difficult to pin down an exact count, but as of April 2021, there were over 10,000 different types of cryptocurrency. This includes coins, like bitcoin and Dogecoin, as well as tokens, which represent a tradable asset or utility (like 10 hours of free streaming on a service or a certain number of loyalty points from a company).
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China declares all cryptocurrency transactions illegal; Bitcoin tumbles
Nick_ Raille_07 // Shutterstock
Almost every discussion of cryptocurrency winds its way to Elon Musk, so how does he fit in with all of this, exactly? Only as an ardent supporter of and believer in cryptocurrencies, really. Many have theorized Musk is actually Nakamoto (he’s not) or the mastermind behind Dogecoin (that would be Jackson Palmer), but really, Musk is simply one of the most outspoken tech leaders on the topic. Both of his companies, Tesla and SpaceX, are heavily invested in cryptocurrency and have engaged with the idea of accepting them as cash-equivalent payments for goods and services, but aside from that, Musk is no more special in the development or growth of these cryptocurrencies than you or me.
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Nick_ Raille_07 // Shutterstock
Almost every discussion of cryptocurrency winds its way to Elon Musk, so how does he fit in with all of this, exactly? Only as an ardent supporter of and believer in cryptocurrencies, really. Many have theorized Musk is actually Nakamoto (he’s not) or the mastermind behind Dogecoin (that would be Jackson Palmer), but really, Musk is simply one of the most outspoken tech leaders on the topic. Both of his companies, Tesla and SpaceX, are heavily invested in cryptocurrency and have engaged with the idea of accepting them as cash-equivalent payments for goods and services, but aside from that, Musk is no more special in the development or growth of these cryptocurrencies than you or me.
You may also like: 30 big companies that started with little to no funding

Image source: Getty Images
It’s very likely that your retirement will be the largest single financial commitment you’ll ever have. Once you’re done working, you’ll be relying on Social Security, any pension you might have earned, and your investments to cover your costs for the rest of your life.
In a retirement that could very well last for decades, you’ll want a nest egg powerful enough to get you through it comfortably. That requires some serious advanced planning and dedication. Fortunately, it’s very possible to get there if you follow all three of these best ways to invest for retirement.
1. Start early
The younger you are when you start investing, the easier it is to successfully reach a comfortable nest egg by the time you retire. This is because your money has that much longer to compound on your behalf, letting the potential growth and reinvested dividends over time do most of the hard work of building your wealth.
The table below shows how much you’ll have to sock away as a one-time investment to reach $1 million by age 65, depending on the rate of return you earn and the age you are when you save up the cash.
Age
|
10% Annual Returns
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8% Annual Returns
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6% Annual Returns
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4% Annual Returns
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25
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$22,095
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$46,031
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$97,222
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$208,289
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30
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$35,584
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$67,635
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$130,105
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$253,415
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35
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$57,309
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$99,377
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$174,110
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$308,319
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40
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$92,296
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$146,018
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$232,999
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$375,117
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45
|
$148,644
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$214,548
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$311,805
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$456,387
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50
|
$239,392
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$315,242
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$417,265
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$555,265
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Table by Author.
As long as you earn any sort of positive return over time, the younger you are when you start investing, the less you have to put away to get to your financial goal. That’s why starting early tops this list of best ways to save for retirement.
2. Invest often
Most people don’t have the ability to come up with a one-time five- or six-figure investment to sock away for retirement. Instead, most ordinary people work for a living and might be able to come up with a little bit each paycheck to invest for those longer-term priorities.
Fortunately, that enables a great strategy — known as dollar-cost averaging — which helps you smooth out your returns over time. If the market goes up, your already-existing nest egg will grow, but your new purchases will buy fewer shares. If the market goes down, your already-existing nest egg will shrink, but your new purchases will buy more shares.
Over long periods of time, if you use that strategy by putting funds into a broad index investment, you’ll likely earn returns in line with the average returns of the index in which you invest. That makes it a great way to invest for the long haul and not worry too much about the risk of putting all your money into the market just before a crash.
In addition, particularly when combined with starting early, investing often can bring the amount of money you’ll need to come up with down to a more manageable level. The table below shows how much you’ll have to come up with each month to retire at age 65 with $1 million, depending on the rate of return you’ll earn along the way and the age you are when you get started.
Age
|
10% Annual Returns
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8% Annual Returns
|
6% Annual Returns
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4% Annual Returns
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25
|
$158
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$286
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$502
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$846
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30
|
$263
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$436
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$702
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$1,094
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35
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$442
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$671
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$996
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$1,441
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40
|
$754
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$1,051
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$1,443
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$1,945
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45
|
$1,317
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$1,698
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$2,164
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$2,726
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50
|
$2,413
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$2,890
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$3,439
|
$4,064
|
Table by Author.
All of a sudden, the numbers become achievable for those who begin investing early enough in their careers. Even for those starting mid-career, that millionaire status might be in reach if they have decent incomes and find themselves with extra cash flow as their debts get paid off.
3. Make it automatic
If you’ve got a 401(k) or other similar employer-sponsored retirement plan available to you, signing up to participate in it could also provide an incredible boost to your nest egg. There are multiple reasons for this.
First, once you sign up and pick your investments, the money for your contributions is taken directly out of your paycheck and automatically put to work on your behalf. That can help remove the temptation to spend the money (since you never really see it), and help keep you actively contributing.
Next, many employers offer matches, where your boss will kick in a bit based on a combination of your salary and the amount you’re saving for yourself. Anything you get from a match boosts the amount of money working on your behalf, and it’s the key reason why investing to max out your 401(k) match is generally the first investment you should make.
As if that weren’t enough, investing in your 401(k) offers tax advantages. In a traditional 401(k), you get an immediate tax deduction based on your contribution. In a Roth 401(k), you can potentially take your money out completely tax free in retirement. In either-style 401(k), your money will compound tax-deferred while in the plan, helping your nest egg grow faster.
Get started now
These three tools can each play an important role in growing your retirement-account balance. Put them all together, and they create a powerful combination that can accelerate your ability to build a nest egg for your golden years.
The sooner you put your plan into action, the better your money can work on your behalf to get you closer to where you want to be. So get started now, and see how far starting early, investing often, and making it automatic can take you on your quest for a financially comfortable retirement.