BLOCKCHAIN

The Basics of Blockchain Technology, Explained in Plain English

Anything and everything you need to know about what makes blockchain technology tick. 

Sean Williams(TMFUltraLong)Jan 10, 2018 at 8:09AM

Historically, no asset has been a greater source of wealth creation than the stock market. Throughout its history, stocks have returned an average of 7% per year, inclusive of dividend reinvestment, and when adjusted for inflation. For the average long-term investor, this works out to a roughly doubling in value about once a decade.

Then cryptocurrencies came along and turned this traditional source of wealth creation on its head. When 2017 began, the aggregate value of all digital currencies combined equaled just $17.7 billion. However, as recently as this past weekend, the combined market cap of the nearly 1,400 investable cryptocurrencies was almost $836 billion. That better than 4,500% increase in value is something that the stock market would take multiple decades to accomplish.

Yet, truth be told, most folks don’t understand the basics of cryptocurrencies, or the blockchain technology that underlies them. Recently, we broke down what cryptocurrencies are in the easiest way possible. Today, we’re going to explain, in plain English, what blockchain technology is all about.

A businessman touching an individual encrypted block that's part of a blockchain on a digital screen.

IMAGE SOURCE: GETTY IMAGES.

What is blockchain technology? 

Blockchain is the digital and decentralized ledger that records all transactions. Every time someone buys digital coins on a decentralized exchange, sells coins, transfers coins, or buys a good or service with virtual coins, a ledger records that transaction, often in an encrypted fashion, to protect it from cybercriminals. These transactions are also recorded and processed without a third-party provider, which is usually a bank.

Why was blockchain invented? 

The main reason we even have this cryptocurrency and blockchain revolution is as a result of the perceived shortcomings of the traditional banking system. What shortcomings, you ask? For example, when transferring money to overseas markets, a payment could be delayed for days while a bank verifies it. Many would argue that financial institutions shouldn’t tie up cross-border payments and funds for such an extensive amount of time.

Likewise, banks almost always serve as an intermediary of currency transactions, thus taking their cut in the process. Blockchain developers want the ability to process payments without a need for this middleman.

A businessman looking at a blockchain on a digital screen.

IMAGE SOURCE: GETTY IMAGES.

What are its prime advantages over current networks?

So, what does blockchain technology bring to the table that current payment networks don’t? For starters, and as noted, it’s decentralized. That’s a fancy way of saying that there’s no central hub where transaction data is stored. Instead, servers and hard drives all over the world hold bits and pieces of these blocks of data. This is done for two purposes. First, it ensures that no one party can gain control over a cryptocurrency and blockchain. Also, it keeps cybercriminals from being able to hold a digital currency “hostage” should they gain access to transaction data.

Second, removing the middleman from the equation and working around the traditional banking system should allow for smaller transaction fees. What’s unclear is if lower fees would mean cheaper fees for the consumer, or just bigger profits for businesses deploying blockchain technology.

Third, and maybe most important, blockchain offers the potential to process transactions considerably faster. Whereas banks are often closed on the weekend, and operate during traditional hours, validation of transactions on a blockchain occur 24 hours a day, seven days a week. Some blockchain developers have suggested that their networks can validate transactions in a few seconds, or perhaps instantly. That would be a big improvement over the current wait time for cross-border payments. 

A person writing computer code on their laptop.

IMAGE SOURCE: GETTY IMAGES.

What are the disadvantages? 

However, blockchain isn’t perfect, and it does have some clear drawbacks.

One obvious hurdle is the adoption of the technology. To deploy blockchain, financial institutions would essentially have to abandon their current networks and start anew. Trying to integrate the current payment networks with blockchain could prove exceptionally challenging — to the point where some businesses don’t even bother trying to do so. It’s also still unclear, with the exception of bitcoin (CCY: BTC-USD), the world’s most popular cryptocurrency, if any blockchain aside from bitcoin could survive being scaled to handle a lot of transactions.

Blockchain can also, depending on the circumstance, be very energy dependent, and therefore costly. When transactions are being verified (which we’re going to talk about in the next section), it’s possible that a lot of electricity can be used. This is the case in point with bitcoin, which is why so few cryptocurrency miners actually find that validating transactions on bitcoin’s blockchain is worthwhile (and profitable). 

Differentiation of blockchain networks is also a concern. Right now, there are close to 1,400 cryptocurrencies, and many have their own versions of blockchain technology. It’s unclear which few will rise to the front of the pack, or which blockchains businesses will prefer. What’s in favor now could quickly become yesterday’s news.

Hard drives and graphics cards connected to a monitor in order to mine cryptocurrencies.

IMAGE SOURCE: GETTY IMAGES.

How are blockchain transactions validated?

Processing transactions on blockchain also comes with the issue of ensuring that the same cryptocurrency coin isn’t being spent twice. That’s where transaction validation comes into play.

There are two primary ways that transactions on blockchain are validated: proof-of-work (PoW) and proof-of-stake (PoS).

Bitcoin runs on the PoW model. What happens with PoW is that cryptocurrency miners (a fancy term for people with really high-powered computers) compete against one another to solve complex mathematical equations that are a result of the encryption protecting transactions on a blockchain network. The first miner to solve these equations, and in the process validate a block of transactions, receives what’s known as a “block reward.” For bitcoin, a block reward is paid as a fraction of digital bitcoin.

The other primary validation method is PoS. Rather than using a ton of electricity in a competition to solve equations, the PoS method awards the owners of virtual coins the opportunity to validate transactions in a deterministic fashion. In even plainer terms, the more coins you own of a virtual currency operating on the PoS model, the more likely you are to be chosen to validate blocks and add to the blockchain.

It’s worth pointing out that while the PoW method hands out block rewards as virtual coins, the PoS model rewards its stakeholders with the transaction fees paid by the users of the block that’s being verified. 

A person holding up a puzzle piece with a large question mark drawn on it.

IMAGE SOURCE: GETTY IMAGES.

Is blockchain public or private?

One of the greatest aspects of blockchain technology is the ability for a developer or business to customize it. This means a blockchain can be completely open to the public and allow anyone to join, or it can be totally private, with only certain folks allowed access to the data, or allowed to send and receive payments. Bitcoin is an example of an open-source public blockchain that allows anyone to join, whereas a private blockchain would be perfect for a corporate customer.

Are blockchain transactions anonymous?

Despite popular belief, most blockchain transactions aren’t anywhere near as private or anonymous as you’d like to think. Even though you don’t have to provide a Social Security number or bank account when buying or selling cryptocurrencies, an analysis of a blockchain can often be traced back to an individual sender or receiving of funds.

A small class of digital currencies known as privacy coins aims to make blockchain-based transactions untraceable. They do this by beefing up the protocols designed to obscure the identity of the sender and receiver of funds, as well as the dollar amount being sent. Yes, privacy coins have been accused of being a haven for the criminal community. However, most privacy coin and blockchain developers also suggest that this is a minute component of their community, and that nearly all members are legitimate consumers and businesses.

A depiction of a smart city, with multiple devices wirelessly connected to one another.

IMAGE SOURCE: GETTY IMAGES.

Does blockchain have applications beyond the financial industry? 

Up to this point, you’ve probably noticed that we’ve discussed the application of blockchain as a means to improve the financial services industry. But, it may actually have plenty of use beyond the financial sector.

For example, Ethereum (CCY: ETH-USD), which has a nearly $116 billion market cap and is the second-largest cryptocurrency behind bitcoin, currently has 200 organizations testing a version of its blockchain technology. Yes, traditional banks are testing out Ethereum’s blockchain, but so are companies in the technology and energy industries. Integrated oil and gas giant BP(NYSE:BP) envisions using a version of Ethereum’s blockchain to aid it with energy futures trading. If these transactions were to settle faster, BP could presumably improve its margin. 

Blockchain may also offer the ability to replace state ID’s that we carry in our wallets, or perhaps help tech companies such as Cisco Systems (NASDAQ:CSCO) manage their Internet of Things network. Right now, Cisco is working on its own proprietary blockchain technology that can identify different connected devices, monitor the activity of those devices, and determine how trustworthy those devices are. It has the potential to continually “learn” and assess which devices are trustworthy, and if they should be added to a network. 

So yes, blockchain is about way more than just sending money.

A person using a smartphone to transfer money to points all over the globe.

There’s a lot of hype in the air about blockchain technology at the moment. A recent World Economic Forum report predicts that by 2025 10% of GDP will be stored on blockchains or blockchain related technology. This means it’s probably something which everyone involved in business should take notice of. However, there’s still a lack of understanding about what it is, and what it does. 

ARTIFICIAL INTELLIGENCE

Artificial intelligence
The modern definition of artificial intelligence (or AI) is “the study and design of intelligent agents” where an intelligent agent is a system that perceives its environment and takes actions which maximizes its chances of success.

John McCarthy, who coined the term in 1956, defines it as “the science and engineering of making intelligent machines.”

Other names for the field have been proposed, such as computational intelligence, synthetic intelligence or computational rationality.

The term artificial intelligence is also used to describe a property of machines or programs: the intelligence that the system demonstrates.

AI research uses tools and insights from many fields, including computer science, psychology, philosophy, neuroscience, cognitive science, linguistics, operations research, economics, control theory, probability, optimization and logic.

AI research also overlaps with tasks such as robotics, control systems, scheduling, data mining, logistics, speech recognition, facial recognition and many others.

Computational intelligence Computational intelligence involves iterative development or learning (e.g., parameter tuning in connectionist systems).

Learning is based on empirical data and is associated with non-symbolic AI, scruffy AI and soft computing.

Subjects in computational intelligence as defined by IEEE Computational Intelligence Society mainly include: Neural networks: trainable systems with very strong pattern recognition capabilities.

Fuzzy systems: techniques for reasoning under uncertainty, have been widely used in modern industrial and consumer product control systems; capable of working with concepts such as ‘hot’, ‘cold’, ‘warm’ and ‘boiling’.

Evolutionary computation: applies biologically inspired concepts such as populations, mutation and survival of the fittest to generate increasingly better solutions to the problem.

These methods most notably divide into evolutionary algorithms (e.g., genetic algorithms) and swarm intelligence (e.g., ant algorithms).

With hybrid intelligent systems, attempts are made to combine these two groups.

Expert inference rules can be generated through neural network or production rules from statistical learning such as in ACT-R or CLARION.

It is thought that the human brain uses multiple techniques to both formulate and cross-check results.

Thus, systems integration is seen as promising and perhaps necessary for true AI, especially the integration of symbolic and connectionist models.

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Three Types of AI

It is useful for companies to look at AI through the lens of business capabilities rather than technologies. Broadly speaking, AI can support three important business needs: automating business processes, gaining insight through data analysis, and engaging with customers and employees. 

Cognitive Projects by Type

We studied 152 cognitive technology projects and found that they fell into three categories.ROBOTICS & COGNITIVE AUTOMATION
71COGNITIVE INSIGHT
57COGNITIVE ENGAGEMENT
24

Process automation.

Of the 152 projects we studied, the most common type was the automation of digital and physical tasks—typically back-office administrative and financial activities—using robotic process automation technologies. RPA is more advanced than earlier business-process automation tools, because the “robots” (that is, code on a server) act like a human inputting and consuming information from multiple IT systems. Tasks include:

  • transferring data from e-mail and call center systems into systems of record—for example, updating customer files with address changes or service additions;
  • replacing lost credit or ATM cards, reaching into multiple systems to update records and handle customer communications;
  • reconciling failures to charge for services across billing systems by extracting information from multiple document types; and
  • “reading” legal and contractual documents to extract provisions using natural language processing.

RPA is the least expensive and easiest to implement of the cognitive technologies we’ll discuss here, and typically brings a quick and high return on investment. (It’s also the least “smart” in the sense that these applications aren’t programmed to learn and improve, though developers are slowly adding more intelligence and learning capability.) It is particularly well suited to working across multiple back-end systems.

At NASA, cost pressures led the agency to launch four RPA pilots in accounts payable and receivable, IT spending, and human resources—all managed by a shared services center. The four projects worked well—in the HR application, for example, 86% of transactions were completed without human intervention—and are being rolled out across the organization. NASA is now implementing more RPA bots, some with higher levels of intelligence. As Jim Walker, project leader for the shared services organization notes, “So far it’s not rocket science.”

One might imagine that robotic process automation would quickly put people out of work. But across the 71 RPA projects we reviewed (47% of the total), replacing administrative employees was neither the primary objective nor a common outcome. Only a few projects led to reductions in head count, and in most cases, the tasks in question had already been shifted to outsourced workers. As technology improves, robotic automation projects are likely to lead to some job losses in the future, particularly in the offshore business-process outsourcing industry. If you can outsource a task, you can probably automate it.

Cognitive insight.

The second most common type of project in our study (38% of the total) used algorithms to detect patterns in vast volumes of data and interpret their meaning. Think of it as “analytics on steroids.” These machine-learning applications are being used to:

  • predict what a particular customer is likely to buy;
  • identify credit fraud in real time and detect insurance claims fraud;
  • analyze warranty data to identify safety or quality problems in automobiles and other manufactured products;
  • automate personalized targeting of digital ads; and
  • provide insurers with more-accurate and detailed actuarial modeling.

Cognitive insights provided by machine learning differ from those available from traditional analytics in three ways: They are usually much more data-intensive and detailed, the models typically are trained on some part of the data set, and the models get better—that is, their ability to use new data to make predictions or put things into categories improves over time.

Versions of machine learning (deep learning, in particular, which attempts to mimic the activity in the human brain in order to recognize patterns) can perform feats such as recognizing images and speech. Machine learning can also make available new data for better analytics. While the activity of data curation has historically been quite labor-intensive, now machine learning can identify probabilistic matches—data that is likely to be associated with the same person or company but that appears in slightly different formats—across databases. GE has used this technology to integrate supplier data and has saved $80 million in its first year by eliminating redundancies and negotiating contracts that were previously managed at the business unit level. Similarly, a large bank used this technology to extract data on terms from supplier contracts and match it with invoice numbers, identifying tens of millions of dollars in products and services not supplied. Deloitte’s audit practice is using cognitive insight to extract terms from contracts, which enables an audit to address a much higher proportion of documents, often 100%, without human auditors’ having to painstakingly read through them.

Cognitive insight applications are typically used to improve performance on jobs only machines can do—tasks such as programmatic ad buying that involve such high-speed data crunching and automation that they’ve long been beyond human ability—so they’re not generally a threat to human jobs.

Cognitive engagement.

Projects that engage employees and customers using natural language processing chatbots, intelligent agents, and machine learning were the least common type in our study (accounting for 16% of the total). This category includes:

  • intelligent agents that offer 24/7 customer service addressing a broad and growing array of issues from password requests to technical support questions—all in the customer’s natural language;
  • internal sites for answering employee questions on topics including IT, employee benefits, and HR policy;
  • product and service recommendation systems for retailers that increase personalization, engagement, and sales—typically including rich language or images; and
  • health treatment recommendation systems that help providers create customized care plans that take into account individual patients’ health status and previous treatments.

The companies in our study tended to use cognitive engagement technologies more to interact with employees than with customers. That may change as firms become more comfortable turning customer interactions over to machines. Vanguard, for example, is piloting an intelligent agent that helps its customer service staff answer frequently asked questions. The plan is to eventually allow customers to engage with the cognitive agent directly, rather than with the human customer-service agents. SEBank, in Sweden, and the medical technology giant Becton, Dickinson, in the United States, are using the lifelike intelligent-agent avatar Amelia to serve as an internal employee help desk for IT support. SEBank has recently made Amelia available to customers on a limited basis in order to test its performance and customer response.

Companies tend to take a conservative approach to customer-facing cognitive engagement technologies largely because of their immaturity. Facebook, for example, found that its Messenger chatbots couldn’t answer 70% of customer requests without human intervention. As a result, Facebook and several other firms are restricting bot-based interfaces to certain topic domains or conversation types.

Our research suggests that cognitive engagement apps are not currently threatening customer service or sales rep jobs. In most of the projects we studied, the goal was not to reduce head count but to handle growing numbers of employee and customer interactions without adding staff. Some organizations were planning to hand over routine communications to machines, while transitioning customer-support personnel to more-complex activities such as handling customer issues that escalate, conducting extended unstructured dialogues, or reaching out to customers before they call in with problems.

As companies become more familiar with cognitive tools, they are experimenting with projects that combine elements from all three categories to reap the benefits of AI. An Italian insurer, for example, developed a “cognitive help desk” within its IT organization. The system engages with employees using deep-learning technology (part of the cognitive insights category) to search frequently asked questions and answers, previously resolved cases, and documentation to come up with solutions to employees’ problems. It uses a smart-routing capability (business process automation) to forward the most complex problems to human representatives, and it uses natural language processing to support user requests in Italian.

Despite their rapidly expanding experience with cognitive tools, however, companies face significant obstacles in development and implementation. On the basis of our research, we’ve developed a four-step framework for integrating AI technologies that can help companies achieve their objectives, whether the projects are moon shoots or business-process enhancements.

BLOCKCHAIN

If you want a middleman, then blockchain is not for you. Blockchain will always connect two peers simultaneously, and with the network, they will be able to communicate without a medium. So, if you want a centralized network, you have to get rid of your need for a middleman.

A.I

“Our intelligence is what makes us human, and AI is an extension of that quality.” – Yann LeCun
“As a technologist, I see how AI and the fourth industrial revolution will impact every aspect of people’s lives.” – Fei-Fei Li

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TRON

Tron aims to cut out the Google Play and iTunes Stores of this world and turn media creators into their own distributors. If the team pulls it off, it could lead to a redistribution of power similar to that of the world wide web. It’s a grand plan — and grand plans are 10 a penny in crypto-land, experts tell Inverse.

The Tron community has rallied to support Sun. In a widely-circulated Medium post titled “Killing FUD Rumors” — short for fear, uncertainty, and doubt — a user called “TwentySumCrypto” noted that the project so far has been oriented toward a Chinese audience, and while the plagiarism is a “point of concern,” it is clear that English-language materials have been a lower priority at this early stage.

“The white paper controversy is a bit of a ‘he said, she said,’” Gerstz says. “We have the problem of language barriers, Tron’s allegations that the non-Chinese translations were prepared by volunteers, and the fact that even established businesses have employees who occasionally try to cut corners by plagiarizing bits and pieces of content.”

The white paper issue notwithstanding, Tron has gained support through its numerous partnerships. Peiwo, another company that Sun founded, has pledged to use the Tron network to power its video messaging services for its 10 million users. Baofeng, which Sun described as a “Chinese Netflix,” has also partnered with Tron, though the specific partnership will focus not on the streaming service but rather a separate subsidiary’s hardware infrastructure services. Bike sharing operator oBike is set to introduce an oCoins cryptocurrency in the first quarter of this year for paying for rides around Singapore, a project it plans to transition onto Tron.

“In oBike’s case, we hope that this will encourage positive riding behaviours and incentivise ridership among oBike users as they will be able to generate oCoins whenever they ride,” Shi Yi, chief advisor of the Odyssey Foundation that operates oCoins, tells Inverse. “In addition to the potential and exponential growth in value, oCoins can be used to purchase online content, any applications that are on Tron’s platform, and pay for oBike rides.”

While oCoin currently runs on Ethereum, the company tells Inverse it plans to switch to the Tron mainnet in the future, a switchover that it says will take place within this year. This timeframe is in line with Sun’s comments, who said at the start of the year that he is “fighting” to get the main net online in the first quarter of 2018. Now-removed roadmaps on Tron’s English language site suggested a December timeframe for the first major milestone.

Tron's roadmap
Tron’s roadmap

“Exodus” is an important part of Tron delivering on its promises.

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