Crypto 101 course content

Blockchain is one of the trending topics in the area of research. Blockchain plays a significant role in certain areas such as solving phone spamming, simplifying transactions, among others. In this article, we list down — in no particular order — ten free resources to learn Blockchain technology. About: This course is provided by IBM where you can learn the basics of Blockchain, its fundamentals, how to build basic Blockchain applications, how to secure Blockchain solutions, understand Hyperledger fabric, and how to demystify Hyperledger fabric ordering and decentralization.



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Top paid cryptocurrency and blockchain courses


Everyone is reaching out to ask me crypto questions. With Bitcoin and other cryptocurrencies recently reaching new levels of success and mainstream adoption, I have been getting a lot of messages from friends and family who remember me talking about blockchain in the past. When a friend showed me how Bitcoin mining worked on his gaming computer back in , I was fascinated with the concept of a completely digital currency that no single entity controlled.

Bitcoin was really designed to be more of a peer to peer transaction system, but due to several factors it has become more of a way to save and invest money. Despite Bitcoin reaching seemingly insane values recently, I still believe we are in the infancy of cryptocurrencies and have yet to see their real potential.

While it may seem like Bitcoin is hugely popular, out of the billions of people on Earth, only tens of millions likely own some amount of Bitcoin. This means that a huge number of people are probably not well versed in how cryptocurrencies work, where they came from, and why many people think we need them.

I wanted to cover some of these basics in a — hopefully — easy to understand way and try to help newcomers to the crypto world understand why they exist. Note : Nothing I say here is intended to be taken as financial advice. I am simply sharing what I have learned about cryptocurrencies and blockchain technology over the years.

The majority of this content is about the technology blockchain and how blockchain is being used today to create these popular financial systems. This is a simplified explanation meant to help anyone understand what it is and how it works. Blockchain, like many technologies, has a lot of depth to it. The technology that all cryptocurrencies are built on is called blockchain. Blockchain is a type of database where information is stored inside of blocks that are chained together. When new information is added it goes into a new block and when the block is full it is linked to the chain after the last block to be added.

Due to the way blockchain inherently creates a timeline of data, it is particularly well suited to creating a ledger of transactions. This is what Bitcoin is, a blockchain of transactions that creates the infrastructure for a global currency system. Bitcoin was the first major application of blockchain, and the work that Satoshi did forever changed the way blockchain could be used. Perhaps the most important attribute of blockchain technology is that it is easily decentralized.

Many traditional databases are run by server warehouses where one company has control over the entire server. This process of verifying my transaction was done by an employee at the bank and nobody else.

When a new block is added to the blockchain, a majority of the nodes in the network have to agree that it is a valid and true. This process of determining via a majority is called consensus. I said before that once a block is added to the chain it is permanent, which is mostly true.

If an entity were to gain control of 51 percent of the network, they could alter blocks. But this is a highly unlikely possibility that would take something like a nation-state to pull off. It is an interesting property of decentralized networks, though. Decentralization removes the central point of control that we are accustomed to interacting with. There are many people who think Bitcoin is a company of some kind, but in reality, the network essentially manages itself with the help of computers across the world.

The reason we use the name crypto currency is because cryptocurrencies use cryptography complex math to secure each transaction. It is important to note that not all cryptocurrencies use the solving of cryptographic problems to secure transactions. The concept of having miners solve these complex problems is called a proof of work consensus protocol. There are other alternatives, like proof of stake, that I will discuss in another post. The main question I get about cryptocurrencies is why do we need them?

There are a plethora of reasons why blockchain and decentralized finance can benefit people, but there are several key factors why a decentralized system is a big deal. Fiat currencies include most government currencies like the US or Canadian dollars. One of the issues with fiat currencies is they are susceptible to debasement.

Debasement is when a currency loses value, usually relative to a more stable baseline like gold. Prior to President Nixon, 35 US dollars was equal to an ounce of gold; linking the value of the dollar to that of gold provided backing for the currency that essentially gave the dollar its value.

But when the United States decided that gold would no longer back the dollar it began to depreciate. Inflation in stable nations is a more complex topic than simply gold being worth more relative to the dollar today, but this highlights how in a centralized financial system the decisions of the few in charge have major impacts on everyone.

When a government mismanages its currency, it can lose its value entirely. Venezuela has experienced extreme inflation over the past couple of decades to the point that their currency is essentially worthless to save or spend in reasonable quantities.

Very quickly it became more profitable for Venezuelans to work online and get paid in US dollars since it holds its value. Bitcoin has also seen a lot of success in countries like this where there is a need for a stable currency in order to actually save value. Bitcoin is particularly resistant to government regulation; there is no central headquarters or CEO of Bitcoin, everything is decentralized, which also makes tracking transactions in the Bitcoin network difficult.

It is not only difficult to track crypto usage for taxation purposes, but it is nearly impossible to prevent someone from owning and exchanging cryptocurrencies. It is possible to store millions of dollars of bitcoin on a flash drive hardware wallet and nobody would ever know you had it. New marketplaces called exchanges are plentiful now as well, and if something is easily for sale on the internet people will find a way to acquire it. Governments have tried full bans on cryptocurrencies that have generally been thought to have little impact on its usage in those areas.

Coinbase just published an article showing how Moroccans had the highest Bitcoin trading volume ever in February despite all cryptocurrencies being banned in Morocco.

I am not suggesting Bitcoin should be used nefariously or regulations should be avoided, but for people living in countries experiencing severe inflation, Bitcoin has surged in popularity and usage regardless of regulation. This is an important factor when considering its ability to empower people in oppressive regions. Many people often ask me what gives Bitcoin its value.

My response is to ask what gives the US dollar its value? They usually respond with something along the lines of the backing of a trustworthy government. We have used gold as money since BC , long before it was valuable in electronics. Bitcoin in its current state is most akin to gold that can teleport. It has become an extremely convenient storage of value that has very low transportation costs for large amounts of money. Instead of having a vault full of gold, a person or entity can store it digitally and securely.

Bitcoin is also incredibly secure. Even though banks have very strong security, recent events have shown that our current cybersecurity infrastructure can be more fragile than we think it is.

If you are interested in Bitcoin, you have likely heard of Ethereum at some point. All of the cryptocurrencies other than Bitcoin are referred to as alternative coins alt coins , but Ethereum is becoming a staple and much larger than its alt coin competitors.

Ethereum is much newer than Bitcoin, coming onto the scene in Instead it is designed to be a decentralized computing platform. Developers can create decentralized applications dApps that run on the Ethereum blockchain network. The Ethereum network still operates at its core like the Bitcoin network does. It is a blockchain network used as a ledger of transactions with miners to process and maintain the network. Smart contracts let a developer leverage blockchain to create their own ledgers blockchain network and even create entire cryptocurrencies that run on this network.

So, while Bitcoin is targeted at being money and nothing else, Ethereum wants to be that and a platform for developers to create their own applications and even entire blockchain networks on. There are already some cryptocurrencies you can buy that are built using Ethereum, like Tether. We have heard horror stories of people who owned Bitcoin but lost access to their coins. You have three options when it comes to storing cryptocurrency:. Many people buy their Bitcoin from exchanges like Coinbase, Gemini, and Kraken.

When you make an account on these exchanges, you automatically have wallets created for the currencies you purchase. I think many of the newest Bitcoin users will keep their coins stored on their exchange of choice. However, this is the one of the least safe ways to store your crypto. In this case it would be your fault for not properly securing your account.

Exchanges are not immune to issues either, and could be subject to a hack. In this case you would hope they are able to repay their customers, but there is no guarantee.

In general it is better to control your crypto assets yourself especially if you invest any sizeable amount. After all, one of the core purposes of cryptocurrencies is to provide individuals with financial freedom from central institutions. This brings us to software wallets. There are a number of available options and they are not all created equal. There are some good software wallets, though, that give you full control of your own security. One of my favorites is Exodus. It can store a wide range of currencies and lets you manage your own private keys.

If you lose those keys, though, you could lose access to all of your cryptocurrency. In order to access the wallet, you need your private keys. Exodus and several popular wallets will also generate a 12 world seed phrase of random words that you can use to recover your account.

It is best practice to print two copies of this, put them in plastic bags, and store them in different and safe locations. Note : Exodus does not offer two-factor authentication, which I think is a major downside.

It also is not fully open source. It is a decent option, but not perfect. The final category is hardware wallets. These are without a doubt the most secure way to store cryptocurrency. Instead of relying on software on your phone or computer that are connected to the internet and not fully under your control, you can instead buy a flash drive looking object that will store your crypto offline.



Cryptocurrency 101

From tokens and blockchains to decentralized finance and NFTs, the world of crypto is vast and growing by the minute. A chain of blocks? Read on as we demystify blockchain. Bitcoin is a revolutionary asset class where value is represented not as a physical or digital object, but as a record of ownership on the Bitcoin blockchain. Is there anything Ethereum cannot do?

This course aims to unpack the hype behind the “crypto craze” and give This course is approximately 6 hours of video content and 2 hours of coursework.

Bitcoin and Cryptocurrency Technologies

Crypto, blockchain, decentralized, oh my! While you might think these are just some strange words that techies in San Francisco use, cryptocurrency, or crypto, is a form of digital currency that is exploding in popularity. With cryptocurrencies like Bitcoin rapidly increasing in value, more donors than ever before are using it to make charitable contributions. Now is the time to get your nonprofit at the forefront of this innovative new way of giving. Cryptocurrencies, or crypto, are digital forms of money that can be used to buy goods and services, or held onto as a long-term investment like a stock. You can read more about mining here , but it involves using very sophisticated computers that solve extremely complex math problems. These computers are not all under one roof, and each computer or group of computers is operated by a unique individual or group of individuals. Then you can trade it as an asset or form of currency. Like gold, there are a limited number of coins or tokens available, so value fluctuates from supply and demand.


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crypto 101 course content

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This column was originally published in November

Top 10 Free Resources To Learn Blockchain

Disclosure: Hackr. When you purchase through links on our site, we may earn an affiliate commission. Decade-old Blockchain technology has gained high popularity in recent years. It was created to keep records of digital currencies like Bitcoin, but today, this technology serves as a decentralized system for businesses due to its evolution over the years. It is all because of Blockchain technology that the digital world of today has reached far beyond finance.


MoneyBall – CryptoDomination 101

Cryptocurrency is a digital currency or decentralized system of exchange that uses advanced cryptography for security. Common examples of cryptocurrencies used include Ethereum, Ripple, Litecoin, and the popular Bitcoin. Though not considered a mainstream form of currency, some tout the business benefits of cryptocurrency over traditional forms of payment such as lower fees, fraud reduction, instant payments, and other advantages. Cryptocurrency is important to learn for various reasons, including to help businesses adopt the form of payment to attract new customers. Bitcoin-, blockchain-, and other enthusiasts will be excited to learn that their cryptocurrency interests can translate into exciting careers.

This course will give you deep conceptual, practical as well as business Content. Introduction to crypto-assets; How to buy and sell crypto-assets and.

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The Blockchain certificate introduces learners to the fundamentals of Blockchain. Through interactive labs, learners can execute smart contracts and are introduced to Bitcoin. Blockchain's impact in the critical industry sectors is discussed: Finance and Business, Law, and Medicine. Students learn about Blockchain's impact on jobs and everyday life and ever-changing security, privacy, and regulatory laws.

The blockchain industry moves quickly. Unlike traditional stock markets, the cryptocurrency markets never sleep—they are open 24 hours a day, 7 days a week.

Access to the features of SubtleCrypto is obtained through the subtle property of the Crypto object you get from the crypto property. Warning: This API provides a number of low-level cryptographic primitives. It's very easy to misuse them, and the pitfalls involved can be very subtle. Even assuming you use the basic cryptographic functions correctly, secure key management and overall security system design are extremely hard to get right, and are generally the domain of specialist security experts. Errors in security system design and implementation can make the security of the system completely ineffective. Please learn and experiment, but don't guarantee or imply the security of your work before an individual knowledgeable in this subject matter thoroughly reviews it.

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  1. Kara

    an Important answer :)