Starting a DAO: The Basics

If you’re at all invested in the Web3 space, you’ve doubtless come across the concept of DAOs, and are perhaps even interested in starting one yourself. The good news is that establishing a DAO is a relatively quick affair, with numerous solutions already in place to make the process easier and far less technical. But it’s vital that your DAO also has a plan and a reason to exist in the first place if you want to attract a community of fellow members.

What is a DAO?

Before we delve into the specifics, let’s make sure you’re on board with exactly what a DAO is (and what it is and isn’t good for). Simply put, a DAO (or decentralized autonomous organization) is a new form of distributed group controlled by its members, with its rules and activity recorded on blockchain technology

The autonomous part of the name refers to the fact that most of the work is carried out by smart contracts, programs stored on a blockchain that automatically execute when certain conditions are met, allowing transactions and other operations to happen without the involvement of an intermediary.

Most DAOs also make use of a governance token that confers voting power to holders based on how many tokens they hold. Combine that with smart contracts and DAOs remove a lot of the ambiguity that might be present in an organization run more conventionally, helping anonymous members to come together in an efficient and cheap manner.

Structure, Functionality, & Differences

A DAO can vary depending on a few different variables, similar to that of companies. Purpose, structure, and overall organization play a vital role in how a DAO is formed, what the DAO actually does, and how the DAO operates economically.

DAO Structure
A DAO structure example. Image credit: Redbeard

The main variables that influence a DAO are:

  • What the DAO’s actual function is
  • How the DAO reaches consensus
  • What the DAO utilizes as a governance or share system
  • How the community behind a DAO manages available funds

DAOs can have absolutely anything to serve as their overall function. Some have been created simply to bet on valuable goods or serve as investment funds. Others govern and allocate resources for decentralized apps or protocols.

The determination of how the DAO reaches consensus is what makes it truly unique to corporations. For instance, instead of shares, DAOs use governance tokens or a similar asset to give democratic voting rights to all members.

Including these main variables in some formation gives you the basis of a DAO. Within these variables are different types of DAOs due to how they are formed, operated, and managed.
Some notable types of DAOs include:

  • AMM DAOs – Known as automated market maker DAOs, these organizations leverage smart contracts for decentralized financial services. This includes MakerDAO.
  • Grant DAOs – These DAOs use grants for funding from the community. It allows for a form of crowdfunding to power decentralized applications. Aave is one of the most popular to use this type.
  • Collector / Investment DAOs – Both of these types of DAOs are formed with the purpose of combining funds to either purchase collectables or rare items or simply to form an investment fund.
  • Media, Social, Entertainment DAOs – These DAOs function to manage full communities, run publications, operate games, and more. They serve as decentralized counters to typical centralized companies like Twitter.

Use Cases and Purpose

Within those broad categories, there is a huge amount of differentiation. If you can dream it, a DAO probably exists to fulfil that niche. Because of that, there’s little chance of us exhaustively going through all the use cases for a DAO, but here are some of the highlights.

Among the more popular uses for DAOs are as governance organizations, whether that’s guiding a dapp or decentralized finance projects such as crypto exchanges or investment funds. Some are envisioning DAOs as a potential new form of organization for businesses, including venture capital firm Andreessen Horowitz (a16z), one of the largest Web3 investors. In its outline of Web3 policy, the firm suggests bringing in legislation to make DAOs a potential successor to corporations. 

More esoteric purposes have also been found for DAOs, however. ConstitutionDAO hit the headlines in 2021 after crowdfunding over $45mn worth of the Ethereum cryptocurrency to try and purchase a first printing of the United States Constitution at auction. Remarkably, the project managed to gather over 15,000 contributors in just seven days – although they were ultimately outbid and refunds (minus costs) were offered.

DAO Structure
Image credit: Horizon Academy

Along similar lines to that project is Krause House, a DAO launched in 2021 with the express purpose of buying an NBA team. Should the project succeed, it has said that members will be able to “participate in decisions affecting the operating procedures of a National Basketball Association (NBA) team including but not limited to general management, ticketing, merchandising and partnerships.”

Then there are the DAOs that serve as a kind of professional association for long-established professions. Taking great pains to state that they are not a law firm or offerers of legal advice, LexDAO consists of legal professionals who are working together on blockchain technology for legal processes and services. The group duly maintains a host of decentralized tools including escrow and arbitration systems. 

DAOs have also found a use as decentralized fan clubs. That was exactly how PleasrDAO came about, coming together to buy an NFT from the digital artist pplpleasr. Since then the DAO has evolved to become an investor in digital art, acquiring such pieces as the Wu-Tang Clan’s Once Upon a Time in Shaolin and an NFT of the Doge meme dog.

DAOs are also making their stamp on the metaverse. Decentraland has a decentralized governing body (The Decentraland DAO) that effectively functions as a planning committee for the Decentaland metaverse, allowing virtual landowners to vote on everything from what wearable items are allowed to how land is auctioned off.

Finally, there are a whole subcategory of DAOs functioning as a kind of successor to social clubs. Just one example is Friends With Benefits, which confers numerous perks to members based on how many FWB tokens they hold – such as a newsletter or access to community events and spaces in various cities.

Things to Bear in Mind

Despite their obvious utility, one should be wary of the potential pitfalls of DAOs before jumping in. By their very decentralized nature, creating a DAO means giving up total control over a project. Then there’s the need to make sure the DAO’s rules are very strictly codified, or else risk manipulation. That’s precisely what happened to DeFi project Beanstalk Farms recently when an attacker managed to drain around $182 million worth of cryptocurrency after using a “flash loan” to borrow large amounts of cryptocurrency, buy a majority voting stake, approve the transfer of funds to their own wallet, then repay the initial loan.

In another cautionary tale, a DAO known simply as The DAO played a highly consequential role in the splintering of the Ethereum blockchain into Ethereum and Ethereum Classic. After users exploited a poorly secured smart contract to drain the investment group of funds, Ethereum hard forked in order to refund The DAO’s members – spurring the creation of Ethereum Classic by those who thought the actions of the smart contract should be final. The lesson is to be extremely considerate of how potential bad actors might want to abuse your DAO, and plan ahead to limit their routes of attack.

How to Form a DAO

Depending on the protocol and DAO structure that is chosen, there are many ways to form a DAO. After the initial organization is set, the purpose is determined, and all generic variables are considered, a DAO is ready to be formed.

Most DAOs are commonly formed first by acquiring an Ethereum Name Service (ENS) address or something similar. This also includes a method for handling voting and proposals, generally through the creation and release of a governance token. There are solutions to this depending on the protocol chosen to launch the DAO.

Two popular protocols to launch DAOs through are Aragon and Snapshot.

Aragon assists in the formation of a DAO organization on a few different blockchain networks, most notably Ethereum and Polygon. Funds are needed to purchase the ENS address, mint the DAO via a creation fee, and then link the ENS to the organization through Aragon.

This obviously has a cost to it (usually in ETH), so an appropriate amount of crypto must be raised to cover the fees of genesis.

Snapshot works in a very similar way, though has an off-chain voting mechanism versus Aragon’s on-chain. Snapshot simply uses digital signatures to facilitate voting and proposal creation.

Like Aragon, Snapshot requires an ENS address first and does require the DAO to be on Ethereum. For Snapshot, it is also required that the DAO has one thousand members and is able to verify this community outright.

Governance Examples

It’s worth exploring some examples of popular DAOs to see just how much they vary in the way they operate, despite largely sharing the same core principles of smart contracts and governance tokens.

Uniswap (UNI)

Uniswap, one of the world’s most popular decentralized cryptocurrency exchanges (DEX), is governed by a DAO, with voting rights conferred based on ownership of the UNI token. UNI coins were originally distributed to early adopters of the platform, as well as anyone who had interacted with the platform before a certain date.

Uniswap is a direct example of an AMM DAO. AMM stands for automated market maker, an algorithmic, price-adjusting protocol that creates liquidity pools between users. Uniswap users participating in the DAO receive voting power over how the protocol’s AMM functions work. As the leading DEX in the space, Uniswap has grown to over $7 billion in total value locked (TVL).

UNI - DeFi Llama
UNI – Image credit: DeFi Llama

MakerDAO (MKR)

Stablecoin cryptocurrency Dai is governed by the aforementioned MakerDAO DAO, a particularly interesting example owing to the path it took – as Rune Christensen, founder of MakerDAO, explained in 2021: “Maker has come a long way in a relatively short period of time,” said Christensen. “It’s gone from a DAO, created by myself and a few passionate developers, to a foundation tasked with bootstrapping an amazing project, and back to a DAO. While the Foundation played a specific and important role in the further development of the Maker Protocol and the growth of a global team, it was designed to exist only temporarily.”

MKR - DeFi Llama
MKR – Image credit: DeFi Llama

Compound (COMP)

Autonomous interest rate protocol Compound offers a governance token known as COMP, which allows holders to vote on the platform’s future direction. COMP tokens are distributed as rewards to lenders and borrowers on the platform, meaning that the more people use the platform the more influence in the DAO they can accrue. The DAO has said that only 10,000,000 COMP will ever exist.

COMP - DeFi Llama
COMP – Image credit: DeFi Llama

Aave (AAVE)

Next, there’s open-source liquidity protocol Aave (an example of a grant DAO we covered earlier), which transferred ownership rights from its core developers to AAVE token holders in 2020 – meaning all AAVE holders can propose and vote on changes to the protocol, or delegate those rights to others. As of the writing of the article, there are 108, 337 token holders leading the platform. The platform also maintains a related Aave Grants DAO which funds ideas submitted by the Aave community.

AAVE - DeFi Llama
AAVE – Image credit: DeFi Llama

Aragon (ANT)

As we’ve discussed, one of the heaviest hitters in the space is Aragon, which is particularly notable for this article as it specifically focuses on enabling the creation of other DAOs. Providing an open-source infrastructure for DAO creation, Aragon offers organizational templates for DAOs focusing on areas such as virtual worlds, and DeFi protocols. As of the writing of this article, 1,900 DAOs have been built on the platform, with over 60,000 members.

ANT Price Action - CoinMarketCap
ANT Price Action – Image credit: CoinMarketCap

Summary

DAOs are a prominent force within the cryptocurrency market. Many who use cryptocurrencies interact with DAOs virtually every single day and may not even realize it. There are DAOs to fit every niche within crypto, very similar to how companies fill out demand in the traditional economy.

We can only speculate as to how DAOs may influence or replace traditional corporations as of now. The important thing to note is that DAOs provide a highly democratized alternative that is easy to start, giving entrepreneurs a new option in which to launch a venture. 

Hopefully, you now have a better idea of the many potential uses of DAOs, as well as an understanding of how relatively simple it is to create your own community. Before you embark on the journey, however, perhaps the most important thing to bear in mind is that DAOs without a purpose stand little chance of prospering. Zero in on your project goals and potential community, however, and your DAO stands a good chance of prospering.

Starting a DAO: The Basics was co-authored by gmw3 writers William Smith and Zach Lorance.

Innovations in AR: Heavy Industry

Augmented reality (AR) is a key pillar of Industry 4.0 (or the fourth industrial revolution), side-by-side with other potentially transformative technologies like machine learning and big data. Indeed, consultancy firm PwC has estimated that industrial manufacturing and design is one of the biggest areas for augmented and virtual reality (VR), with their use in heavy industry having the potential to deliver a $360bn GDP boost by 2030.

In this latest edition of our series on how augmented reality is faring across a range of industries, we’ll be taking a closer look at why AR is proving so useful in heavy industry, in particular the fields of construction, manufacturing and energy.

Construction

AR is proving to be a key tool for the construction industry, whether in the design stage or actually in the construction process itself, leading a 2020 study of the architecture, engineering, and construction (AEC) industry to say that AR and VR would see “strong growth” in the next 5 to 10 years.

On the design side, numerous architectural tools exist to help with space visualisation using augmented reality. One such example is The Wild, which allows designers to view 3D models in both virtual and augmented reality. Such tools can layer virtual details onto a building plan so that plans can be more readily understood by stakeholders. 

That requires highly detailed and accurate 3D models, which is where the technology overlaps with digital twin technology. Using those digital twins, companies like Akular can enable clients to see what a building would look like on-site in the real world before it is built via a mobile application.

When it comes to actual construction, augmented reality again finds a number of uses, not least training workers on safety. That might involve AR headsets that interact with tags on potentially dangerous areas to bring up safety information, but even before workers are on-site, AR can help with training them on how to use heavy machinery – as with the construction equipment training simulators offered by CM Labs or the Arvizio AR Instructor.

Arvizio AR Instructor

“Industries are experiencing a shortage of skilled front-line employees and view augmented reality as a means to accelerate training and efficiently transfer the expertise of experienced workers,” said Jonathan Reeves, CEO of Arvizio. “Arvizio enables organizations to rapidly upskill employees without the need for on-site coaching and mentoring. By delivering no-code authored augmented reality instruction and remote expert connectivity, AR Instructor can substantially increase productivity and reduce errors of workers performing complex operational activities.”

Meanwhile, progress capture and tracking functionality directly compares real-world sites with virtual models to ensure they aren’t deviating – all in real-time. A host of companies provide variations on that technology such as VisualLive, which enables users to witness 3D models in real life via headsets such as the Microsoft HoloLens or mobile devices.

Manufacturing

Much of the technology we’ve covered for construction can equally apply to the manufacturing industry, whether that’s learning how to use dangerous equipment or visualising the layout of equipment and machinery in a factory. None of this is to say there aren’t plenty of bespoke uses for augmented reality in the manufacturing space, however.

One early pioneer was Volkswagen, which was using augmented reality to assist service workers way back in 2013. The MARTA app showed step-by-step instructions on how to repair and replace certain components, overlaying its advice on the car via an iPad app. Along similar lines is Boeing’s more recent use of augmented reality to give technicians real-time, hands-free, interactive 3D wiring diagrams. 

Interestingly, that technology has bled over into the consumer space with AR manuals that assist car-owners with basic maintenance operations by showing precisely where components are located within a car.

In the design space, AR has been deployed by the largest manufacturers to rapidly iterate and do away with expensive and time-consuming physical prototypes. In the case of Ford and its partnership with HoloLens, changes can be made to a design and reflected in real-time to collaboratively sculpt a new vehicle.

AR has been trusted at the very highest levels of manufacturing, too. Lockheed Martin utilised augmented reality in the creation of NASA’s Orion Spacecraft, overlaying information to help with mission-critical procedures such as precisely aligning fasteners.

Nasa Orion HoloLens

Energy

In the energy sector, AR has the potential to remedy significant problems faced by the industry, chief of which is a brain drain caused by an ageing workforce. Indeed, the US Department of Labor estimated in 2019 that 50% of the current energy utility workforce will retire within the next ten years. The institutional knowledge being lost could be replenished more quickly with the help of AR technology.

Shell is duly using the remote collaboration possibilities of AR to educate workers in the field. Expert consultants are able to see through a worker’s eyes via an AR headset, and even draw on the screen of the augmented reality display they are using. That increases safety as workers interact with potentially dangerous heavy oil and gas equipment, as well as allowing experienced but ageing employees the ability to work remotely.

Shell AR
Image credit: Shell

The energy sector is no slouch when it comes to more specific AR solutions either, such as Upskills’s Skylight platform which allows companies to more easily develop bespoke augmented reality apps for use with AR devices, ranging from Google Glass to Microsoft HoloLens 2 and mobile devices. Then there are solutions such as Adroit, which can provide guidance on repairing high-stakes equipment such as oil rigs by scanning and identifying faulty components and machinery.

Final Thoughts

In heavy industry, where the costs of prototyping are enormous and the potential risks from machinery are significant, leaning on the virtual possibilities of augmented reality is common sense – hence the interest in the technology from across the sector.

To find out more about how AR is progressing in other fields, read the previous entry in the series, where we explored the healthcare industry in particular.

Top 8 Uses for Augmented Reality

Augmented reality (AR) is a technology with a dizzying range of potential applications. And as new and more powerful AR hardware enters the market (such as Apple’s mooted glasses), we’re likely to see even more uses for AR. 

That’s not to say that AR, as it exists today, is any slouch, and to prove it we’re looking at eight of the best uses for augmented reality.

Virtual try-ons

The retail industry has been one of the most prominent embracers of AR technology over at least the past decade. Most of the industry’s biggest brands offer some form of the technology, which allows prospective buyers to see how a product would look on them without needing to physically try it on, usually utilising the ubiquitous phone camera to display the virtual elements in real-time.

Prominent virtual try-on examples include make-up from Maybelline, clothing from ASOS and Zeekit, and shoes from Vyking.

Vyking AR Shoes
Image Credit: Vyking

Gaming

Augmented Reality has found a natural home in the gaming industry, where it has powered some huge mobile game successes including Pokemon Go and Pikmin Bloom, both from developer Niantic.

Pokemon Go in particular was a smash hit, peaking at over 250 million players per month on the back of an experience that transported the gameplay of the popular Pokemon video game series to real-world locations. That built on work the developer had done in its previous game Ingress, which allowed players to use their mobile phones to interact with virtual portals appearing in real-world locations as part of its science fiction story.

Construction

AR is a key tool in the construction industry, from the design stage right through to the actual building process. For architecture, numerous tools exist to aid in the visualisation of spaces, such as The Wild, which allows designers to view 3D models in both virtual and augmented reality.

On the building side of the equation, AR has uses ranging from training workers on safety to progress capture and tracking functionality that directly compares real-world sites with virtual models in real-time to ensure they aren’t deviating.

VisualLive
Image credit: VisualLive

Surgery

The high-stakes field of surgery is being revolutionised by augmented reality technology which can overlay vital information onto a surgeon’s field of view as they work. Mixed reality headsets such as the Microsoft HoloLens 2 allow surgeons to operate on patients more effectively, blending the real world with projections of computed Tomography (CT), and Magnetic Resonance Imaging (MRI) scans of the patients.

Holographic representations of the area being operated on can also be observed in 3D before surgery takes place to ensure a surgeon has full familiarity of the area they are working on. To find out more about the role of AR in healthcare, read our article on the subject.

The tricky business of finding your way around busy spaces has been much improved with the help of AR, such as the Live View feature offered by Google Maps, which takes existing data from the map app and overlays it on the camera’s view of the real world with help from your phone’s GPS capabilities.

Individual locations have also explored using augmented reality to help guide visitors, such as Gatwick Airport, which installed navigational beacons that guide a passenger’s way back in 2018 – all accessed via a smartphone app.

Google Maps AR / Google Lens
Image credit: Google

Education

From a school setting to on-the-job training, AR can be used to help learners safely interact with materials they would otherwise not be able to gain access to, all while remaining in a familiar setting. Google debuted augmented reality search during the COVID-19 pandemic to help people learn by placing virtual objects such as spacesuits and animals into real-world locations. A host of apps exist to bring similar objects into a classroom setting, including the Merge Cube, which adds tactility to the experience.

Energy giants such as Shell, meanwhile, are using AR to educate workers in the field by bringing in experts who can see through a worker’s eyes and even draw on the screen of the augmented reality display they are using, boosting safety as they interact with potentially dangerous heavy oil and gas equipment.

Design

Designers at all levels are making use of AR to preview how a space will look before any changes are made physically, from those designing individual rooms all the way up to those planning cities.
Non-professionals too can make use of augmented reality to aid in their designs. Just one example is furniture store IKEA’s IKEA Place app which allows users to place 3D models of the company’s goods into their own rooms in order to preview how they would look, automatically scaling them based on the room’s dimensions to ensure they are true to life.

IKEA PLACE AR app
IKEA Place AR app. Image credit: Ikea

Manufacturing

AR is one of the key pillars underpinning the phenomenon of Industry 4.0, alongside such technologies as machine learning and big data. Consultants PwC has estimated that industrial manufacturing and design is one of the biggest potential areas for augmented and virtual reality, with their use in the industry having the potential to deliver a $360bn GDP boost by 2030.
As a result, examples of the technology in action for manufacturing are easy to come by. One example is Boeing’s use of augmented reality to give technicians real-time, hands-free, interactive 3D wiring diagrams. Lockheed Martin also utilised augmented reality in the creation of NASA’s Orion Spacecraft, overlaying information to help with mission-critical procedures such as precisely aligning fasteners.

TikTok Debuts Effect House AR Development Platform

TikTok’s long-awaited augmented reality (AR) development platform has officially gone live in open beta having been in closed beta since the end of last year.

Effect House enables developers to build augmented reality effects for use on the social media platform, joining the likes of Snapchat’s Lens Studio or Spark AR for Meta’s suite of social media apps.

Aside from tools to build AR effects, Effect House also features live demos, tweakable templates as a starting point for creators, and tutorials to help creators make the most of the platform’s capabilities – such as motion tracking, segmentation and texture replacement.

Effect House

As one of the most popular publishers of user-generated content, TikTok is no stranger to controversies such as the spreading of COVID-19 misinformation or potentially harmful viral challenges

Perhaps seeking to head off similar issues arising from inappropriate filters, TikTok published a list of effect guidelines, mandating that it wouldn’t allow effects “that promote colorism or negative stereotypes against protected groups” as well as effects “that depict cosmetic surgery, such as lip fillers, or encourage scrutiny of someone’s appearance”. Consequently, all effects will be reviewed by the platform before being released to the wider community.

TikTok revealed that during the closed beta period, effects built by more than 450 creators using the platform have been used in 1.5bn videos, attracting a whopping 600 billion views around the world.

Taking community-inspired creativity to the next level with Effect House |  TikTok Newsroom

One such creator is Allan Gregorio, who said of the platform: “As a creator, I think AR effects help us to express ourselves and shareTikTok Debuts AR Development Platform Effect House stories with others. It is one of our most important creative tools available because they have the ability to reach many people very quickly.”

Aside from AR, TikTok has also displayed an interest in virtual reality, last year acquiring one of the world’s largest VR headset manufacturer’s in the form of Pico Interactive.

For a deeper dive into the capabilities and possibilities of TikTok’s new AR platform, keep an eye out on gmw3 in the coming weeks.

Top 10 NFT Marketplaces

When it comes to buying and selling NFTs, you have a pretty extensive choice of marketplaces to do so – as befits the inherently decentralised nature of Web3. To prevent that choice from becoming overwhelming, we’ve prepared a list of the top NFT marketplaces on offer and the benefits each individual offering provides. 

We’ll start by taking a look at the marketplaces with the broadest ranges of NFTs on offer, followed by more artist-focused and specialised marketplaces. And if you find you need to brush up on your Web3 jargon while reading, take a look at our Web3 glossary.

Generalist NFT Marketplaces

OpenSea

As one of the oldest NFT marketplaces (opening in 2017), OpenSea comes replete with a broad collection of NFTs, as well as the largest user base among its peers. From virtual land to music, photographs, art and trading cards, NFTs of all types are tradeable via the OpenSea marketplace.

On the creator side of the equation, OpenSea allows artists to create NFTs for free and ensure that they receive royalties after every sale. The marketplace has also introduced a gas-free NFT marketplace on the Polygon blockchain, which it says will allow creators to “earn their way” into crypto.

Rarible

Operating on the Ethereum, Flow and Tezos blockchains, Rarible allows creators to choose which blockchain to use when minting, allowing them to balance the popularity of each chain with the gas fees incurred upon it.

The community-owned platform is operated by a DAO, with a governance token known as $RARI conferring the ability to vote on changes to the platform.

Cryptopunks - NFTs
Editorial credit: mundissima / Shutterstock.com

Binance NFT 

The Binance NFT exchange is part of the broader Binance cryptocurrency exchange – one of the largest of its kind. It offers all kinds of NFTs on both Ethereum and its own Binance Smart Chain (BSC).

The exchange also prominently showcases “mystery boxes” made in partnership with figures such as Toni Kroos and Mike Tyson, which entitle users to a randomised NFT.

Nifty Gateway

Owned by Cryptocurrency exchange Gemini, Nifty Gateway makes use of its parent company’s technology to store NFTs in a secure, custodial wallet, allowing collectors to move NFTs onto the platform without gas fees. The platform also supports fiat purchases and offers curated as well as verified NFTs.

The platform was founded by twin brothers Duncan and Griffin Cock Foster, and in a weird piece of cosmic synchronicity, was later acquired by the Winklevoss twins, Cameron and Tyler, of Facebook lawsuit fame.

Artist-Focused NFT Marketplaces

Foundation

Opening in 2021, Foundation differentiates itself from the rest by virtue of being artist-run and community-led. Creators access the Ethereum NFT marketplace via an invite from an already established member of the community, while buying NFTs via auction or offers is available to anyone.

That exclusive community of creators leads to an overall higher base quality compared to other competitors. The marketplace says its creators have earned over 57,000 ETH total at the time of writing, or around $200mn.

SuperRare

SuperRare is another invite-only platform, with the marketplace saying it invites artists based on the proportion of collectors present on the website. SuperRare says it is undertaking a path of increased decentralisation which will expand access in the future, however.

SuperRare focuses exclusively on “art” NFTs and includes curated, gallery-like “spaces” for showcasing NFTs. Having been around since 2018, the platform debuted a curation token in 2021 that confers access to the SuperRare DAO which decides the platform’s future.

MakersPlace

Invite-only MakersPlace has a reputation for partnering with the mainstream art world, including auction house Christie’s. NFTs are digitally signed by artists in categories such as photography, 3D art and animation, which are then released in limited numbers.

The partnership with Christie’s led to the artist Beeple’s Everydays – The First 5,000 Days selling for over $69mn, though some queries were later raised about whether it actually qualified as an NFT.

EVERYDAYS - THE FIRST 5000 DAYS, 2021 by Beeple
Image Credit: EVERYDAYS: THE FIRST 5000 DAYS, 2021 by Beeple

KnownOrigin

KnownOrigin describes itself as artist-driven, and duly features NFTs in a range of formats, from animated 3D pieces to paintings. Artists must be vetted before joining the platform, with art files themselves hosted on distributed storage solution IPFS and given unique provenance identifiers.

It specialises in limited runs of artworks released in periodic timed drops, with the most expensive NFT artworks sold on the platform being The Bull and The Bear by Trevor Jones, sold for 55.55 and 35 eth respectively.

Specialist NFT Marketplaces

Async Art

Async Art is certainly the most differentiated of all the marketplaces on this list, specialising in so-called “programmable” art. The generative artworks offered on the marketplace are able to evolve over time thanks to being split into layers, which can be owned and altered by different people within the parameters set by the original artist.

These can include swappable elements known as “states”, as well as factors such as colour, scale, rotation and transparency.

Async Art
Image Credit: Async Art

Solanart

Unlike the other options we’ve highlighted, Solanart hosts NFTs on the Solana blockchain rather than Ethereum. While Solana supports cryptocurrencies, decentralized applications, smart contacts and NFTs like Ethereum, it supports a higher throughput with improved transactions-per-second thanks to its proof-of-history feature and proof-of-stake consensus mechanism.

The marketplace hosts a curated set of collections, with some of the biggest examples being Degenerate Ape Academy, Aurory and SolPunks.

A Brief History of AR

The history of augmented reality (AR) is longer than you might realise. Indeed, while the term “augmented reality” was only coined in the early 90s by Boeing employees Thomas Caudell and David Mizell, we can retrospectively apply the moniker to a long list of technologies that existed before that date.

What is Augmented Reality?

Before we delve into that history, it’s necessary to define exactly what augmented reality is and isn’t. Simply put, augmented reality refers to any technology which affords users the ability to simultaneously interact with both real and virtual elements within an environment – unlike virtual reality, which consists of entirely virtual elements.

In its modern incarnation, AR is mainly provided in two different formats. The first are headsets or head-mounted displays (HMDs) which combine functionality such as environmental mapping, image projection, eye-tracking, and remote collaboration. A more accessible form is via the ubiquitous smartphone, which can use the many sensors contained within, as well as the camera, to enrich images with virtual additions. It’s this approach that drives some of the more mainstream successes AR has had such as video filters that change your appearance in real-time or games such as Pokemon Go. With that definition in our mind, let’s take a closer look at the earliest days of the technology.

The Dawn of AR

While a full and exhaustive history of augmented reality technology would be a monumental undertaking, there are certainly a few high points that are useful in demonstrating how augmented reality reached the level of development it enjoys today.

The advent of AR technology is often attributed to the Sensorama from 1962, which accompanied a 3D film with smells and wind directed at the viewer. AR went portable with heads-up and head-mounted displays such as the Electrocular, developed by the Hughes Aircraft Company, also in 1962, which gave pilots access to information via a TV signal reflected onto an eyepiece. A report at the time considered potential future uses of the technology, saying: “It will also help surgeons to go about their work even while they are watching instruments reporting the second-to-second condition of the patient’s heart and other vital organs.”

Sensorama

1968 saw the creation of one of the first head-mounted displays by computer scientist Ivan Sutherland and others – a crucial step toward the headsets commonly used for augmented and virtual reality today. Unlike the wireless or at least ergonomic headsets, we’re used to, this early example lived up to its nickname of the “Sword of Damocles” as its weight required it to be suspended from the ceiling. Despite this, it enabled users to enter virtual rooms with very early wireframe computer graphics.

In stark contrast to that rather cumbersome technology was Myron Krueger’s Videoplace, an AR laboratory project instituted in the mid-70s. That project pioneered computer vision and interaction techniques that would later be replicated in the likes of Microsoft’s Kinect. Move on to the 80s, and we see the creation of a wearable computer vision system in the form of the EyeTap, which was capable of overlaying text and graphics on a view of the real world.

In the 90s, the personal computing revolution and the improved computing power on offer led to many advancements for industrial and military purposes, culminating in projects such as the US Naval Research Laboratory’s Battlefield Augmented Reality System (BARS) system, which was involved in prototyping early wearable systems for on-foot combatants.

AR’s Recent History

In the 2000s picking up the mantle of AR innovation were less controversial sectors. Indeed, in recent times we’ve become consumers of augmented reality in forms we might not even realise, such as the Hawk-Eye computer vision system for sports, first implemented for Cricket in 2001. The system works via computer vision, using cameras to precisely triangulate the location of a ball, for instance, to check whether it has crossed the goal line in Football. That digital projection can then be overlaid on real images to determine whether an event has occurred.

In sports more recently, we’ve seen the emergence of virtual replacement technology capable of the real-time replacement of real, physical ads with virtual copies, so that broadcasters of matches can display advertisements more in line with their audience. It works via non-visible light signals which are used to precisely locate where virtual advertisements should appear. That means they can seamlessly disappear when players walk in front of them – all while still allowing those in-person to see a physical advertisement rather than a green screen.

Virtual Replacement Technology Sports

The advertising sector was also pioneering AR during this period, such as a campaign from BMW in 2008 which turned a printed magazine ad into a stage for a model car when held in front of a webcam, while also including controls allowing the user to control the car. That and similar efforts led to a boom in augmented reality advertising that continues to this day. Retail, too, embraced AR in the 2010s, with the capacity to virtually try-on goods such as makeup by utilising motion capture and smartphone cameras.

BMW - AR

The technology’s recent history has also witnessed mixed attempts by companies to drive consumer adoption of augmented reality, particularly in the gaming space. One only needs to look at the likes of 2003’s EyeToy, which creator PlayStation explicitly described as its “first foray into augmented reality”. Meanwhile, competitor Microsoft’s Kinect line of motion sensing input devices was launched in 2010, lasting a couple of generations before dying out.

Where AR Stands Today

This brings us to the modern-day, where augmented reality finds itself in a mixed place. While there have been a few blockbuster hits for AR such as Pokemon Go, it’s in the business world where the technology is really finding its feet. The aforementioned Kinect was resurrected in 2020 as the Azure Kinect, for use with the company’s Microsoft Azure cloud computing platform, while other parts of the technology were integrated into what is undoubtedly the big daddy of the augmented reality headset world: the Microsoft HoloLens.

The AR sector has seen a fair amount of buzz in just the past few weeks. Game publisher Square Enix announced that it would be partnering with Qualcomm’s new Snapdragon Spaces XR Developer Platform to develop AR titles, potentially drawing its extensive catalogue of properties including the likes of Final Fantasy, Dragon Quest and Kingdom Hearts, for instance. We also saw the Houzz Pro app add new augmented reality features enabling contractors to turn 2D floor plans into 3D client walkthroughs, while Quantum Storey’s immersive XR storytelling platform announced a new collaboration with Hasbro.

To find out more about the augmented reality state of play, take a look at our series on AR in industry, starting with healthcare.

Innovations in AR: Healthcare

It’s fair to say that augmented reality (AR) hasn’t quite caught the public imagination in the same way virtual reality (VR) has. It’s one of those technologies that forever seems to be being hyped while simultaneously always being a few years away.

Indeed, according to one study, in 2018 the AR market was worth $4bn to VR’s $7bn. But while consumer adoption of augmented reality may be lagging some way behind, it is in industry where AR is proving to have the most impact – leading the same study to conclude that by 2030, AR will be larger than VR, reaching $76bn in comparison to VR’s $28bn.

In this series on augmented reality, we’ll be determining how likely that future is by examining the good and bad of AR technology across a number of industries, starting today with healthcare.

Surgery

One exciting area for AR in medicine is surgery. In high-stakes procedures, it’s easy to imagine the utility of technology that can guide the surgeon’s hand while still affording them a view of the situation. As such, mixed reality headsets allow surgeons to operate on patients more effectively, blending the real world with projections of computed Tomography (CT), and Magnetic Resonance Imaging (MRI) scans of the patients in order to detect exactly where an operation should be performed. 

A prime example of this came in 2017 when the first surgical procedure using Microsoft’s HoloLens was performed by Dr. Gregory Thomas, Head of Orthopedic Surgery and Traumatology at the Hospital Avicenne AP-HP. During the procedure, the doctor was able to view holograms and 3D models of the patient projected in real-time, as well as call on the assistance of other doctors who could appear via proxy holograms.

Image credit: Assistance Publique Hôpitaux de Paris

Thomas likened the technology to having a smartphone in the operating theatre, saying: “I realized that I was able to use the HoloLens as a computer or a smartphone to get any information I need when I need it, during surgery. That allows surgeons to be quicker, to be more efficient and to improve performance.” AR’s utility for surgery is further proven by the virtue of hands-free control, with manual gestures and voice commands being used to access information that would otherwise be inaccessible to an operating surgeon in a sterile room.

Since that time, there have been numerous initiatives to make use of the technology in a surgical setting, as well as before the surgery actually takes place. Holographic representations of the area being operated on can be constructed and observed in 3D before surgery takes place, affording surgeons a much more visceral understanding of what they need to do while also allowing infinite practice attempts.

“Medicine, particularly surgery, is still an apprenticeship. You watch a person operate 100 times before you’re allowed to,” said Dr. John Sledge, an orthopaedic surgeon in Louisiana who makes use of augmented reality. “But now we can have residents run through 100 operations on the HoloLens, complete with rare complications and their solutions. We can do worst-case scenario training. With the HoloLens, we can make a problem occur and the doctor in training has to solve it.

Problems remain, however, not least the potential of issues with the cleanliness of augmented reality headsets in an operating theatre as well as the question of how they can be restored if they stop working. Other approaches to AR bypassing the use of a head-mounted display have duly been tested, including an advanced form of projection onto a patient’s body. That solution requires 3D reconstruction of a bodily region so that a flat X-ray image can be properly projected onto the skin without distortion. 

Telehealth

During the COVID-19 pandemic and its associated lockdowns, telehealth has risen to the fore as a means of accessing healthcare without being somewhere physically. While this can be achieved with a simple video call, bringing AR into the mix opens up more meaningful interaction possibilities. Case in point being the Alder Hey Children’s NHS Foundation Trust, which brought in AR to reduce physical contact between staff, patients and visitors with virtual ward rounds. That enabled one clinician to make the rounds wearing a HoloLens 2 device with others joining in remotely via Microsoft Teams – enabling them to see what the clinician sees as well as engage in two-way audio and video communication.

The capacity for remote collaboration in augmented reality also opens up many training possibilities, allowing more experienced but not physically present doctors to witness and even holographically appear to trainees as they learn – potentially a huge boon to healthcare professionals in developing parts of the world.

Aside from educating professionals, AR has taken on a role in educating ordinary members of the public about their health, as demonstrated by the recent BBC television programme Your Body Uncovered. Away from the television cameras, the technology is being used to prepare patients for surgery by demonstrating to them exactly what the problem is and how it will be fixed via a virtual twin of their bodies.

Mental Health

One area where AR can best demonstrate its unique capabilities is in so-called “exposure therapy”, whereby a therapist attempts to help a patient overcome fears, anxieties and phobias. With AR, patients can be exposed to a virtual representation of something that scares them while knowing that they are in a safe environment and that the object of their fears isn’t real.

Image credit: Phobys

One study using an augmented reality smartphone app to reduce fear of spiders found the “intervention led to significantly lower subjective fear” over a controlled two-week trial. While virtual reality could be used for similar purposes, using AR means that a user is able to see their own body and surroundings while interacting with virtual elements, helping them to better engage in the treatment. The fact that AR can be so readily accessed from a smartphone means such exposure therapy can also be accessed as a self-help tool, not requiring the presence of a therapist.

The practice of using AR for such treatments is certainly in its infancy, but there are signs that AR is gaining ground as a method of treatment. According to GlobalData’s 2021 poll on digital health in neurology, 18% of 109 industry respondents thought AR and VR solutions would be the most suitable technology to treat mental and behavioural health conditions.

Summary

While augmented reality technology may currently be lagging behind the bigger brother that is VR, it has found a natural home in the world of medicine, where it has enjoyed a long and fruitful history. Despite that, it has very much yet to reach its full potential. As new approaches to AR continue to be developed and barriers to entry are lowered further, expect augmented reality to play an ever more prominent role in the healthcare of the future.

Privacy in Web3

In today’s centralised Web 2.0 landscape, we expect some measure of control over our data – whether it’s setting our social media feeds to private or being able to delete an e-commerce website account entirely. At the same time, we rely on platforms to deal with bad actors and remove offensive content. That might be via moderators who actively check content or simply banning individuals based on their IP address or other records. In the decentralised realm of Web3, those assumptions are seemingly falling by the wayside.

Web3 and Anonymity

Web3 services built on blockchain upend those existing norms by their very nature, leading to a place where there is simultaneously a surplus and a lack of privacy. That’s because while transactions are always public and irremovable, connecting your identity to your wallet is not a necessity in the same way it is when dealing with a traditional banking system.

For people who don’t want to be found, blockchain technology makes it relatively easy to disappear and pop up in new locations. They might create a new wallet, use cryptocurrency mixers or tumblers to obfuscate transactions or cryptocurrency ATMs to draw it out as physical cash, for instance.

On the flipside are blockchain analysis tools which are becoming increasingly adept at identifying wallets and transactions belonging to the same individual. When even those determined to maintain their privacy are having a harder time, what hope for those who aren’t as dedicated? Once their identity becomes associated with their cryptocurrency wallet address (whether intentionally or unintentionally), all of their transactions will be open for the whole world to peruse – whether well-intentioned or not.

This could lead to a situation where only individuals who can dedicate large amounts of resources and time to maintaining their anonymity (quite possibly for nefarious reasons) have any amount of privacy. What then becomes of the freely accessible transaction data connected to our identities?

Blockchain Scalability

The Privacy Problem

For the past few years, there has been a seismic shift occurring in terms of how companies make use of customer data. Initiatives like the EU’s General Data Protection Regulation brought in obligations for any company collecting data regarding people in the EU, for instance, while Google is bringing about changes to “cookies” to hamper tracking and third-party advertising, and Apple made it much harder to track user behaviour in iOS apps.

But as it stands in Web3’s decentralised format, algorithms will have free reign to harvest data. That might seem fairly harmless if it’s just a company trying to sell you things, but some are wondering whether corporations or even governments could harvest blockchain transactions in order to discriminate against individuals. Indeed, parts of China’s social credit system – intended to score the trustworthiness of every citizen based on their behaviour – already run on blockchain technology.

The Immutability Issue

As that proves, blockchains are not only used to store records of financial transactions. As more and more blockchain platforms are springing up, encapsulating everything from videogames to social networks, more complex files are beginning to be stored on-chain. That leads to the possibility of unsavoury items such as hateful comments or illegal images being immutably written into a given blockchain.

At the moment, storing complex things like images on the blockchain is prohibitively expensive, and as such it simply links to image files hosted elsewhere that are almost always stored instead. That would at least enable the address hosting an offending image to be taken down, but as costs come down, there might be little stopping people from intentionally filling blockchain platforms with illegal content. While platforms might choose to hide such content within their decentralised application, it would still be visible on the underlying blockchain.

Even things uploaded innocently someone might later wish to delete would instead be stored forever within the blockchain itself. That directly contradicts existing legislation such as the “right to be forgotten” in the EU, which allows individuals to ask organisations to delete their personal data.

Potential Solutions

While some groups such as the OASIS Consortium seek to remedy these issues in the form of centralized standards, there are also those seeking to resolve them in the decentralised spirit of Web3. Europechain, for instance, specifically markets itself as a “GDPR supporting enterprise blockchain platform”, a feat which it achieves by having all of its validators under a Data Protection Agreement.

At the same time, privacy-centric blockchain platforms such as Zcash are developing a digital currency with shielded transactions to keep financial information private, while others like Aleo are using a cryptographic technique known as zero-knowledge proofs (ZKPs) to aid with the development of private applications on the blockchain. That technology allows transactions to be executed off-chain while remaining verifiable by allowing a statement or fact to be proved true without revealing what makes it so.

It remains to be seen which approach to addressing Web3 privacy will prevail as adoption grows. Will individual platforms need to go to the effort of moderating content and policing users, effectively mirroring their Web 2.0 counterparts of today, or will decentralised, on-chain solutions win out? What’s clear is that Web3’s issues with privacy aren’t going away anytime soon.

How do Blockchain Platforms Differ?

A quick glance at the largest cryptocurrency tokens reveals a host of diverse offerings, each with markedly different approaches when it comes to their underlying use of blockchain. From those that focus on being investment vehicles to others that specialize in hosting distributed applications, how exactly do these blockchains differ in their approach?

Bitcoin

Even the most casual follower of technology will be familiar with Bitcoin, which for many might also be practically synonymous with cryptocurrencies in general. That’s reflected in the fact that other cryptocurrencies are commonly grouped together as “altcoins” versus the monolith that is Bitcoin.

Its popularity stems partly from its first-mover advantage. Its journey to becoming by far the largest cryptocurrency started with its release in 2009. Developed by a mysterious person or group known as Satoshi Nakamoto, the currency is well known for its significant price fluctuations (topping out at around $69,000 in November 2021) as well as its pioneering use of blockchain technology.

While we won’t dive too deep into the specifics of how blockchains work, in the case of Bitcoin the work of joining together the eponymous, unalterable blocks is done via a process known as mining. To ensure that new data is permanently stored on the blockchain, computers on the network compete to solve increasingly complex mathematical problems. The miner who successfully solves the problem is then given Bitcoin as a reward. The chance of winning is directly correlated to the amount of work that can be done on the problem – hence the emergence of gigantic Bitcoin farms in areas where energy prices are low.

Bitcoin’s prominence means many of the negative headlines regarding blockchain technology (such as its outsized impact on the environment) involve the cryptocurrency in some way. It’s also recently been the centre of controversy after the nation of El Salvador adopted it as legal tender – a move the IMF condemned.

Hot and Cold Crypto Wallets

Ethereum

Where Bitcoin is focused on digital currency, Ethereum sets itself apart by virtue of its programmable nature. The open-source platform has become well known for its support of decentralized applications, smart contracts, NFTs (non-fungible tokens), as well as the ubiquitous cryptocurrencies.

That’s all accomplishable thanks to the fact that Ethereum is a so-called “Turing Complete” blockchain. What that means is that it can be coded to perform any task required of it via decentralized applications (dapps). Dapps include things like games and exchanges, all running securely on the blockchain. As a result, they gain all the security and uptime benefits of the technology – with all their code and data hosted, secured and verified by computers on a distributed network.

Then there are smart contracts, programs deployed on the blockchain that automatically execute agreements based on the rules that are coded into them. Thanks to that, they can be used as infallible intermediaries for executing transactions, ensuring that everyone involved is certain of the outcome once the prerequisite conditions are met. Ethereum is also well known for powering NFTs (non-fungible tokens), which use the blockchain to confer proof-of-ownership onto digital items such as digital art, video game items, music and much more besides. The principle is much the same as cryptocurrency, only an NFT points to a unique asset, while any given unit of cryptocurrency is identical.

Like Bitcoin, Ethereum only functions thanks to the energy-intensive process of mining – as they share the consensus mechanism known as “proof-of-work”. However, the platform is currently planning a raft of upgrades to move to another form of validation known as proof-of-stake. The platform is hoping that will solve scalability problems hampering its dapps. Currently, Ethereum can only handle somewhere between 15-45 transactions per second. To ensure that transactions get through such a congested system, exorbitant transaction or gas fees have to be paid by users. With upcoming upgrades the blockchain is targeting 100,000 transactions per second, meaning those associated fees should fall.

Solana

Like Ethereum, Solana is a generalist blockchain, supporting cryptocurrencies, decentralized applications, smart contacts and NFTs. It was founded in 2017 and is operated by the open-source Solana Foundation based in Geneva, Switzerland.

Solana’s blockchain emphasizes throughput – with transactions-per-second around 2500 compared to Ethereum’s 30. It achieves this via a process known as proof-of-history, whereby every transaction is given a cryptographic timestamp. That ensures there is a verifiable sequence of transactions without requiring the work of every node to validate it, meaning less computing power is required and lower gas fees have to be paid.

Unlike Ethereum and Bitcoin, however, it utilizes a proof-of-stake consensus mechanism. That sees users staking cryptocurrency to become validators. They are then randomly chosen to create new blocks as well as check and confirm blocks created by others. The tokens they have staked can be taken away if they approve fraudulent transactions, incentivising them to validate correctly – at which point they receive tokens and the transaction fees within a block.

Terra

Finally, South Korea-based Terra was founded in 2018 by Do Kwon and Daniel Shin. The Terra blockchain specializes in facilitating so-called “stablecoins”. These are cryptocurrencies that track the price of real-world fiat currencies. The blockchain supports two main complementary types of cryptocurrency tokens known as Terra and Luna respectively. The Terra tokens are pegged to the price of real-world currencies (TerraUSD being pegged to the United States Dollar). 

That’s achieved thanks to the Luna token, which serves to stabilize the price of Terra stablecoins. Users must “burn” Luna to mint Terra and vice versa. The system algorithmically incentivises one process over the other to keep the currency stable. While the price of Terra is maintained, as the use of the blockchain grows the price of Luna increases.

In line with all this, the Terra network touts its decentralized finance (DeFi) credentials, a movement to remove third parties from financial transactions. As such it supports decentralized applications including decentralized savings protocol Anchor

Summary

Even in the relatively early days in which we live, the inherent flexibility of blockchain technology has resulted in a broad swathe of use cases. While the blockchains we have discussed are leading the market at present, disruptors with pioneering new approaches to using the technology can be expected to join the pantheon at any time – with services like Chainlink’s oracle platform being just one potential bet.

All You Need to Know About Blockchain

Blockchain. While you may think the term has reached maximum saturation, expect it to become even more inescapable over the next few years as more and more solutions are built on top of it – be they dapps, DAOs or NFTs. Which makes understanding exactly what blockchain technology is on a fundamental level fairly crucial. Speaking of…

What is a Blockchain?

A blockchain is fundamentally a digital ledger that records information and stores it securely, verifying its authenticity through cryptography. Crucially, the work of updating the blockchain is a shared endeavour, carried out by computers across a network. That means a blockchain can be a secure and authentic record while remaining decentralized.

As you may be able to tell from the name, blockchains consist of “blocks” of data, joined together in a chronological chain that tracks precisely where assets are moving to and coming from. Once a block is created, it cannot be removed or altered, meaning that its position in the chain (as well as the date and order of transactions it contains) is permanently recorded. 

The physical hardware running the software of any given blockchain are referred to as nodes. Their responsibilities range from the aforementioned validation of transactions and setting the state of the blockchain to serving as the endpoints that enable users to actually access applications on the network.

Of course, as a decentralized network, users need to be incentivized to maintain the blockchain. That is usually financial, in the form of newly created cryptocurrency or from transaction fees paid by other users. These “gas fees” pay for miners to use their hardware to create the new block necessary.

Blockchain Scalability

Consensus Mechanisms

All of this is only possible thanks to consensus mechanisms that ensure every node agrees. Depending on the specific mechanism (such as proof-of-work or proof-of-stake), a blockchain grows via a process known as mining or validating. 

Proof-of-work mining involves computers on the network competing to solve increasingly complex mathematical problems in order to securely add new blocks onto the blockchain. Winning the race is a game of chance, but your odds are significantly improved the beefier your hardware, meaning mining is an energy-intensive affair. The miner who succeeds in creating the block is given new tokens – as well as the transaction fees contained within the block.

Proof-of-stake validation, meanwhile, sees users depositing cryptocurrency to become validators in a process known as staking. They are then randomly chosen to create new blocks as well as check and confirm blocks created by others. Once a block is validated, the validator then gets tokens and the transaction fees within. The tokens they have staked can be taken away in the event they approve fraudulent transactions.

In both cases, new transactions are verified and recorded without the interference of one central authority. Proof-of-stake is viewed as a greener solution for blockchain construction, with Ethereum being one example of blockchain targeting a move from proof-of-work. It also helps solve another of the problems plaguing the technology: scalability. Ethereum can only handle somewhere between 15-45 transactions per second – with upcoming upgrades the blockchain is targeting 100,000 transactions per second.

Why use Blockchains?

With all that in mind, you might be wondering why you would go to the trouble of doing all that just to produce a ledger – hardly the most groundbreaking of technologies. The key innovation that makes blockchain such an intriguing technology, however, is the fact that it is decentralized. What that breeds is trust. With data stored and synchronized across the network, immutably, users can be assured that everything they need is present and correct – all without the interference of a third party taking its own cut.

This fact enables a number of exciting possibilities, perhaps chief among them smart contracts. Essentially programs stored on the blockchain, their immutable nature means that they are guaranteed to execute whenever the conditions programmed into them are met. That means they can be used to automate agreements, again without relying on a third-party arbiter.

Smart contracts can be used to power everything from games to decentralized finance applications, but one of the most exciting possibilities is their use in oracles. Oracles connect reality to the blockchain by using off-chain data, perhaps from a real-world sensor, to trigger events. A prominent example is Chainlink, which allows users to connect smart contracts to real-world information such as weather data – in turn enabling parametric insurance that reimburses farmers for reduced crop yields caused by drought after a weather sensor detects low levels of rain.

Who are the Big Players?

In terms of name recognition, Bitcoin is certainly the best-known blockchain, thanks to the precipitous rise of its eponymous cryptocurrency. Since launching in 2009, its pioneering approach has seen it become far and away the largest cryptocurrency by market capitalization.

For possibilities on the blockchain other than cryptocurrency, however, Ethereum has proved to be the most popular. Having launched in 2015, it has made its way to being the second-largest by capitalization on the back of its smart contracts, decentralized applications and non-fungible tokens. Open source, the blockchain refers to itself as “programmable”, with a dedicated programming language for writing smart contracts known as Solidity.

Among the also-rans, the largest blockchain to have implemented the previously discussed proof-of-stake consensus mechanism is Cardano. Then there’s Solana, the USP of which is its use of proof-of-history to increase throughput – with transactions-per-second currently hovering around 2500. Proof-of-history sees every transaction given a cryptographic timestamp to produce a verifiable sequence of transactions that doesn’t require every node to agree, resulting in less computing power being required.

Summary

Now you understand what a blockchain is, it’s well worth diving deeper into some of the many possibilities the technology enables. Take a look at some of our other resources to find out more about NFTs, virtual land and blockchain gaming, to name but a few!