Decentralized Finance: present and future

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What is Cryptocurrency?

"Any form of currency that only exists digitally, that usually has no central issuing or regulating authority but instead uses a decentralized system to record transactions and manage the issuance of new units, and that relies on cryptography to prevent counterfeiting and fraudulent transactions". [1] Cryptocurrencies are based on a blockchain technology, also known as a distributed ledger. Due to the decentralised nature, the currencies are thought to be resistant to government manipulation and interference. [2]

Origins of Cryptocurrencies

Bitcoin

Ethereum

If Bitcoin is the mother of all cryptocurrencies, we can call Ether the father. As the cryptocurrency with the second largest market cap, Ether was developed and is the native currency of Ethereum blockchain, which was developed to be able to offer a wider array of implementations and adaptations of blockchain than Bitcoin. It allows anyone to build decentralized applications on top of the Ethereum blockchain, as well as construction and trade of NFT’s, and overall has a more open and adaptable to change environment than Bitcoin, according to most( except Bitcoin maximalists, who think this is just a misconception and a lack of awareness about the real potential of Bitcoin)

Proof of Work vs Proof of Stake

When it was first developed, the security of Ethereum blockchain was based on proof-of-work.This concept is relied upon to make any sort of attack and manipulation on the chain extremely difficult, which is needed to ensure the availability of the network, as well as to prevent mishaps like double spending

What is proof of work?

Even though proof of work is a term popularized by Bitcoin(whose security is also based on this concept), it was actually coined in the early 2000s. Later as it got adapted as the security guarantee of most cryptocurrencies, it started to play a more important role in most tech savvy consumers’ lives. To understand how proof of work works, we first need to understand what the “work” in “proof of work” is. Here, work refers to the work done by Etherum miners to validate and add a new block to the blockchain, in order to enable new transactions to take place. Network security relies on the fact that the computations done by the miners in order to add a new block to the chain are very labor-intensive and hard to replicate, yet they are extremely easy to be verified by anyone who wishes to do so.Miners are incentivised by a monetary price in the form of blockchain’s native token, which is given to whoever is able to solve the problem(find the nonce of the transaction) first. However this computationally intensive process also means miners employ very powerful equipment that consumes high amounts of energy. A single Etherum transaction is said to use 262 kWh energy, which is comparable to the amount used by a US household in 5 days.

Why the switch?

There are many different reasons for the switch from Proof of Work to Proof of Stake, but here are the most mentioned ones:

The environmental cost:

As mentioned above, the environmental cost of mining seems high to many people, though usually this is not based on a decision made by comparing ETH mining process to other financial transactions, some a lot more meaningless, like high frequency stock trading executed every day in Wall Street. Yet regardless of how fair or an unfair comparison is made, it is obviously a good idea to make sure the future of finance is constructed in a more sustainable way. Hence this is one of the aims of switching from PoW to PoS, which will remove the incentive for doing the calculations necessary to add new blocks to the chain as fast as possible, thus in effect lowering energy consumption of miners

Monopolization of the Network:

As mentioned above, the safety and longevity of Ethereum blockchain depends on solving the computational puzzles presented with every transaction as fast as possible. And in order to make sure there are people willing to do this job so that the chain remains online, a monetary incentive is presented to solvers. This financial gain quickly drew the attention of entrepreneurs, especially people who had access to cheap electricity. Slowly, a whole industry developed around Ethereum mining, and the imbalance in computational power of miners meant small-time miners began seeing considerable decreases in their rewards. Eventually, big companies took over almost all of the mining, leading to a highly un-decentralized system, which goes contrary to the very spirit of the development of most blockchain technologies, With a switch to PoS, the hope is a shift to a more egalitarian system where not only mining-whales but also small shrimp who just want to partake in the blockchain have some say will be achieved.

So, what is Proof of Stake?

Proof of stake is a consensus mechanism where the miners, who are now called “validators” are chosen randomly by an algorithm-though it is important to note that this algorithm makes its selection based on the amount of holdings every validator has, so whoever has more ETH has a higher chance of being picked, currently this bar is set at 32 ETH, which is worth around $100,000 at the time of writing, thus removing the need to compete against other validators and getting rid of the need to employ very fast machines that consume exorbitant amounts of energy.The switch is also supposed to make Ethereum blockchain more scalable, allegedly allowing for up to 100,000 times more transactions to be validated per second.

Monero

 Even though most people who don’t have in depth knowledge about cryptocurrencies think they are anonymous, most cryptocurrencies are technically pseudo-anonymous at best(the at best part being due to the very common use of centralized exchanges, which are regulated by governments right ow and are subject to KYC-Know Your Customer- and anti-money laundering laws). They do allow transacting entities to be traced using their wallet addresses, and through these addresses anyone can get the full transaction history belonging to that address. So even if linking an address to a person isn’t something your average Joe is capable of, for a dedicated tech-savvy person, and for any government that has reign over the centralized cryptocurrency exchanges, it isn’t as difficult as some people make it out to be.
 This is where Monero comes in. Monero, known to traders as XMR, is a fully anonymous, decentralized cryptocurrency. It has the thid largest developer community behind it, after BTC and ETH, and attracts a lot of attention from privacy activists and cypherpunks, as well as governments and their taxation departments, like America’s Internal Revenue Service(IRS), who is offering bounties to anyone who is able to develop monero tracking technologies. 


Which aspects of Monero are private? Even though Monero is open source and uses a public distributed ledger system, allowing anyone interested to observe the transactions, these observers’ capabilities are reduced significantly compared to pseudo-anonymous blockchains like Bitcoin and Ether XMR doesn’t release any information about the monetary amount of the transactions It doesn’t release any information about the status of funds belonging to a certain address, whether they have been spent, transferred or not. The network also supports I2P(Invisible NetworkProject) that is an anonymous network layer(like Tor, but better according to some) that doesn’t even reveal the information that any transaction done on XMR is actually done on XMR.


       How?

Sea level:

 At a very basic level, we can describe this process as a masked dance party(courtesy of www.monero.how), where everyone is wearing masks of other participants, and all the attendees have multiple masks. So nobody knows who you actually dance with, many other people can claim to have danced with “you” at different times, or even at the same time, and in the end everyone will have danced with everyone. 

This analogy also explains why Monero enforces intractability for all transactions. If there were only three people on the dance floor, figuring out who is who would be a lot easier. Monero widens this pool by requiring everyone to remain anonymous.

Deeper Level: Monero provides anonymity using multiple different techniques. The most important ones are: using “stealth” addresses, bulletproofs, Dandelion++

Stealth Addresses: Stealth addresses are created by the sender every time a transaction is done. They are randomly generated, so observers aren’t able to connect transactions done by the same user to that person. The sender can use their private viewing key to see the record of all their transactions, but anyone who doesn’t have these keys isn’t able to track the transactions done by the person.

Bulletproofs:

 At first, Monero employed ring signatures and RingCT to obscure the amount of funds being transacted. Ring signatures create digital signatures that can be validated by anyone who has access to the public keys of the group members, but no information about which member of the group created the signature during this process. The original papers describe a scheme based on RSA signatures.
 Monero specifically employed “mixins” from previous transactions to obfuscate the sender’s address. First there was no lower limit, but as it was later realized this created a huge threat vector, a minimum of seven decoy signatures requirement was added. But a big downside of RingCT scheme was its huge size overhead. So a switch to “bulletproofs” was made
 Bulletproofs are based on “Non-Interactive Zero Knowledge Proof”(NZIP), which basically allows someone to commit a statement without revealing to the verifier what that statement is. For example if you and your friend are playing a guessing game where you tried to guess a number your friend randomly picked, your friend could commit this number with a zero knowledge proof commitment so that you wouldn’t know what it was until it was revealed, but your friend would have no way of claiming it was some other number either. These bulletproofs don’t require a trusted setup, hence lowering the size requirements and potentially allowing for additional security implementations to be made.

Stability of Cryptocurrency

When we talk about the stability of traditional currency, we are referring to the so-called purchasing power of that currency. If the amount of goods that can be purchased with a unit of currency does not fluctuate much over time, then that currency is said to be stable.

Stability of currencies[3]

Before 1971, the value of currency (and its consequent stability) was tightly linked to gold, insofar as the currency was merely a standby for the literal amount of gold that could be exchanged for that banknote of coin. The power of this transition from amounts of stuff (goods, cattle, gold, ect.) to a “paper” that guaranteed the same values exchanged was understood and already implemented in early-developing banking systems. The advantage is clear: less need to move goods around for every transaction; faster and more agile trading. This whole system relies, however, on the possibility of banks to exchange the banknote for gold, and vice versa. The bank grants for the amount of gold in your stead. After 1971, however, the literal connection (and possible exchange) from banknote to gold was severed. Traditional currency is now referred to as fiat[4] (latin for “it will be”). This fiat currency is now issued by a central government, and the same government grants for its value. When managed by strong governments, fiat currency is generally stable. Moreover, governments generally offer some form of asset protection, and enact laws that protect consumers against digital fraud or theft, which makes it easier to recover lost funds. Unfortunately, the centralisation also brings many problems, an obvious one being inflation. Moreover, having to rely on intermediaries, significant charges are issued to users. Absence of intermediaries is indeed one of the more appealing characteristics of crypto currencies, which enables the consumers to lower the fees (transactions, ect.) and costs of account maintenance, and take more control over their finances and privacy. However, the same anonymity properties can attract money launderers and other criminals, who can use them not to be tracked back to a fraud or a cyber attack. These are all factors that contribute in an indirect manner to the stability of crypto currencies; however, the lack of a regulated body that can grant asset protection or insurance is the main cause of instability. The value of cryptocurrency is generally derived from the continued willingness of market participants to exchange fiat for cryptocurrency, which may result in the permanent and total loss of value of a particular cryptocurrency should the market for that cryptocurrency diminish or disappear. There is no assurance that persons and companies who accept cryptocurrency as payment today will continue to do so in the future. Moreover, cryptocurrencies issued with a fixed number of units may be susceptible to deflation. In 2018, the Bank for International Settlements, a 90-year-old institution based in Switzerland, issued a research report concluding that cryptocurrencies are afflicted with inherent contradictions that make their widespread use as money impossible. Most of the crypto currencies generate trust by limiting the amount of currency available, in the case of bitcoin to 21 million. The problem with that is that during periods where there is greater demand for them, the supply is unable to respond This is theoretically a good feature for the store of value function of money, as your savings theoretically cannot be debased by creating more of the currency, but it's not so good for the stability required for price comparisons or making transactions. And it can backfire too for those trying to store value — just as there is no central bank to put downward pressure on the value of money, there's also no institution there to absorb potential losses and prop up the value of cryptocurrencies in times of crisis.

Usage During Global Crises

Technology

Limitations

Government & Regulations

Digital Divide

Graph of Countries and Internet Access[5]

We define the digital divide as the gap between members of society who have access to digital technologies (not only access to the Internet, but also to devices, such as computers and smartphones) and those who do not. The socio-economical disadvantages faced by those who suffer from digital divide are, among others: Learning and researching option are drastically reduced Inability to expand their business reach Limited means to find and apply for jobs Restricted purchasing options, being unable to benefit from the ones that are online Limited way to participate to democratic life, for example through voting According to reports from the United Nations[6] and World Bank[7] almost half of the world still does not have access to the Internet, as per April 2021.Particularly, data showed that, on average, developing countries’ internet penetration rate is around 35% (with the lowest valley recorded in Africa, with only 26%) compared to developed countries of 80%. Moreover, an increase in GDP of about 2 trillion US dollars and the creation of more than 140 million jobs have been estimated to be achieved by raising internet penetration to 75% in developing countries.

Bridging the digital divide by providing mobile networks and internet access would lead to improving the economic growth of a region, and improving social mobility and economic equality.

The two factors that have been hindering the spread of the Internet are: high infrastructure costs to fund rural, remote, or sparsely populated areas and the lack of funding as a result of high infrastructure costs.

As of lately, however, thanks to a promising new iteration of the WiFi technology (namely 6G) combined with a blockchain platform, many companies have expressed interest in venturing into researching and developing solutions for a mesh network that could cover those problematic areas.

A blockchain platform, combined with wireless mesh network technology, can put an end to the digital divide by providing affordable broadband internet access to remote areas.

The specific solution for Africa is a mix of extensive 4G coverage for outdoors and cheap-to-implement WiFi for indoor and stationary users. While it is true that satellite connectivity can be considered as an option for connectivity in remote areas, the costs are still too high, for a pretty slow connection (compared to high speed internet delivered through fiber, for example). the digital divide by bringing the internet via a satellite in a remote area, it is still costly.

A new technology based on blockchain is able to provide the low-cost internet infrastructure much needed in remote areas and low-income countries. Such technology is based on a mesh network architecture which makes use of blockchain protocol to keep track of every node in the network and its usage. Every node can behave as a receiver and a transmitter, essentially covering vast areas as a single Local Area Network with many Access Points.

As subscribers both receive and transmit data to other users, subscribers who consume less data than they transmit can also earn credit. The bookkeeping of this credit is delegated to a dedicated cryptocurrency, through blockchain protocol.

The same cryptocurrency will also be used as a utility credit for the user subscription service. This means that when subscribers pay for the network services they are actually buying a tiny portion of the coin which will be deducted as they use their phone to make calls or surf the internet.

As more and more users use the network the price of the coin will go up. However, this is only going to benefit the subscribers, so if the value of the coin goes up, the amount of available credit also increases.

Regulations

'Pump and Dump' Schemes

Social Intelligence

Cryptocurrency trading is gaining popularity very fast. Especially as a large portion of the population either couldn’t go to work or was out of work during the pandemic,the influx of fresh blooded retail traders started creating a hype around crypto. A range of new trading platforms, especially mobile, came to life, some of which were maye rightly accused by lawmakers for gamifying trading, offering rewards to users who make trades over a certain amount in a short period of time, having arcade-like graphics and holding trading competitions. While how much responsibility the platforms should take considering all the users are adults who are deemed capable of making their own decisions is up for debate, this environment of excitement created a whole new segment of data, based on crypto social media.

The fact that “Crypto Twitter” is a term widely known and used is a good indication of what a big role social media platforms play in the synergy surrounding cryptocurrencies. Many retail users get trading tips and setups from social media influencers who are “crypto experts”. Even billionaires like Elon Musk use Twitter to tweet seem,ngly random tweets about seemingly random cryptocurrencies and send their prices to the moon(some people call this market manipulation). This high level of activity naturally creates a huge amount of data. This is where a relatively new technology called “sentiment analysis” or “opinion mining” comes into play.

The main objective in sentiment analysis is to evaluate the public opinion using the social media posts of people and analyzing them using “natural language processing”, biometics, computational linguistics and similar techniques that are supposed to be able to pick up human emotions and context only through text. Sentiment analysis actually has a longer history than what most might imagine, supposedly even playing a role in Barack Obama’s victory in 2008 US Presidential Elections. Later it got adapted by large online marketplaces like Amazon, who used it to go though buyer comments and classify them according to their urgency levels and content(apparently before employing AI, Bezos himself would respond to every comment). Nowadays, sentiment analysis has proven to be a crucial part of holding the pulse of markets.

In the crypto space, sentiment analysis is done based on metrics such as increase/decrease in mentions, engagements, clicks, shared links, the number of posts, number of contributors and the like. Different coins, exchanges and crypto influencers are evaluated based on these metrics. One can also see the top 10 most talked about coins of the day, the ones where the cumulative metric has risen or fallen the most, the ones where the public sentiment is the most positive or negative etc.

Due to the fact that cryptocurrencies and their trading are still in their infancies, data regarding their trading is still scarce. One can’t go back 50 years to observe a larger trend, the history is still being written, in very grand terms. And this history is being shaped in a very different way than a traditional, centralized market structure.Since crypto came to existence during an era of very fast evolving technologies and social dynamics, its market dynamics also reflect this very nimble and maybe fickle structure. This highly variant composition can also be seen in the data gathered from sentiment analysis. The most mentioned coins on Twitter change on a daily basis, so do the trending buzzwords, maybe less frequently. But anyone who has been in the crypto space for the last few years can attest to the boom of “defi”, now to be replaced by the “nft” craze. Nobody can know for sure what will be the new “it” thing in a year, but one thing is for sure, whenever that “it” becomes “it”, crypto twitter will be the first to know about it.


Future of Cryptocurrency

Since the whole concept of cryptocurrencies has been around for barely longer than 10 years, it is hard to predict what the next ten years will bring. Though, there are a few factors that have been in everyone’s minds.

1. Regulations:

Due to their “high risk” nature and wide adaptation by illegal actors, according to governments, we have seen a rise in efforts to regulate the crypto space in the last few years. While a critical mind could just consider this a not so subtle ploy to demand more tax payments from the public, it is beyond doubt the crypto industry, be it centralized exchanges, personal investors or businesses that use cryptocurrencies in one form or the other will be facing a new wave of regulations in the near future

2. Adaptation by mainstream finance

As crypto goes under the control of governments, even though it probably becomes less appealing to the cypherpunks, it does become a more accessible instrument for traditional finance. Tech giants like Tesla are starting to hold Bitcoin in their balance sheets, some like Facebook and Amazon are starting to implement blockchain in their platforms, and banks are trying to lure traditional investors by creating crypto ETFs(exchange traded funds).

3. Elon Musk:

Elon Musk and his meaningful tweets(which are kindly shared with the public on a platform he of yesterday-25th of April, 2022- owns), have power beyond anyone’s wildest imaginations

Environmental Impact

Crypto currencies have been highly criticized for having a very high carbon footprint. Since we are talking about a digital currency, which therefore means it is by definition an “immaterial” commodity, bears the question: how? How can a string of zeros and ones have environmental impact? Everything is connected to the concept of crypto mining, in which “miners” compete to append blocks and mint new currency, each miner experiencing a success probability proportional to the computational effort expended. This form of cryptographic proof in which one party (the prover) proves to others (the verifiers) that a certain amount of a specific computational effort has been expended is called Proof of Work (PoW), and it’s been popularized by Bitcoin. Mining for proof-of-work cryptocurrencies requires enormous amounts of electricity and consequently comes with a large carbon footprint. Proof-of-work (PoW) blockchains such as Bitcoin, Ethereum, Litecoin, and Monero were estimated to have added 3 to 15 Mt (million tonnes) of CO2 emissions to the atmosphere in the period from January 1, 2016 to June 30, 2017. By November 2018, Bitcoin was estimated to have an annual energy consumption of 45.8 TWh (teraWatt-hour), generating 22 to 22.9 Mt of CO2. By the end of 2021, Bitcoin was estimated to produce 65.4 Mt of CO2 and consume between 91 and 177 TWh annually. As of 2022, the Cambridge Centre for Alternative Finance[8] (CCAF) estimates that Bitcoin consumes 131 TWh annually, representing 0.29% of the world's energy production. For what concerns electricity consumption, the world's second-largest cryptocurrency, Ethereum, uses 62.56 kWh per transaction. XRP is currently the world's most energy efficient cryptocurrency, only using 0.0079 kWh of electricity per transaction. Until 2021, according to the CCAF much of Bitcoin mining was done in China. Chinese miners used to rely on cheap coal power in Xinjiang in late autumn, winter and spring, and then migrate to regions with overcapacities in low-cost hydropower, like Sichuan, between May and October. In June 2021 China banned Bitcoin mining and Chinese miners moved to other countries such as the US and Kazakhstan. As of September 2021, according to the New York Times, Bitcoin's use of renewables ranges from 40% to 75%. According to the Bitcoin Mining Council and based on a survey of 32% of the current global bitcoin network, 56% of bitcoin mining came from renewable resources in the second quarter of 2021. Concerns about bitcoin's environmental impact relate bitcoin's energy consumption to carbon emissions. The difficulty of translating the energy consumption into carbon emissions lies in the decentralized nature of Bitcoin, impeding the localization of miners to examine the electricity mix used. The results of recent studies analyzing bitcoin's carbon footprint vary. A 2018 study published in Nature Climate Change by Mora et al. claimed that bitcoin "could alone produce enough CO2 emissions to push warming above 2 °C within less than three decades. However, three other studies also published in Nature Climate Change later dismissed this analysis on account of its poor methodology and false assumptions. For example, one study done by Michael Novogratz's Galaxy Digital claimed that Bitcoin mining used less energy than the traditional banking system. Predictions about bitcoin consuming the entire world's electricity are probably sensationalistic, but it is clear that more specialized research is very much needed, alongside careful monitoring and rigorous analysis. BIS report of 2018 contains a section pertaining to crypto mining and its environmental implications.

Electronic waste

Bitcoins annual e-waste is estimated to be about 30 metric tons as of May 2021. It is also estimated that one Bitcoin generates between 272 and 380 grams of e-waste per transaction. This is worsened by the fact that the average lifespan of Bitcoin mining devices is estimated to be only 1.29 years: the effectiveness of the mining process is tightly linked to having state-of-the-art equipment. Mining hardware is improving at a fast rate, quickly resulting in older generations of hardware being disposed of. To add insult to injury, mining uses application-specific integrated circuits which, unlike most computing hardware, have no alternative use.

Efforts to reduce the impact

Some major cryptocurrencies are implementing technical measures to reduce the negative environmental impact. Bitcoin developers are working on the Lightning Network that would reduce energy demand of the network by moving most transactions off the blockchain. Ethereum is planning a transition from the Proof of Work to the Proof of Stake algorithm. This could reduce the network's energy demand by around 99%. The development of intermittent renewable energy sources, such as wind power and solar power, is challenging because they cause instability in the electrical grid. Several papers concluded that these renewable power stations could use the surplus energy to mine Bitcoin and thereby reduce curtailment, hedge electricity price risk, stabilize the grid, increase the profitability of renewable energy infrastructure, and therefore accelerate transition to sustainable energy and decrease Bitcoin's carbon footprint. Reversible computing chips and hash recycling could possibly provide some advantage to bitcoin mining in forms of reduced energy usage and e-waste, but reversible computing is still at its early stages. More research and development is needed on reversible bitcoin mining chips and also hash recycling for providing entropy to pseudorandom number generation. Climate-related criticism of Bitcoin is primarily based on the network’s absolute carbon emissions, without considering its market value. However, when taking a relative emission perspective that connects Bitcoin’s carbon emissions to its market value, one study suggests that Bitcoin investments can be less carbon-intensive than standard equity investments. The addition of Bitcoin to a diversified equity portfolio can thus reduce the portfolio’s aggregate carbon footprint. A 2022 study concluded that cryptocurrencies and other blockchain applications can support the transition to a circular economy and the underlying three principles of reducing, reusing, and recycling. Cryptocurrencies and token rewards can be used to incentivize the sustainable behavior of individuals. For example, token reward models can incentivize individuals to recycle. There are also several plastic cleanup incentive mechanisms that rely on token rewards.

References

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  • How Does Crypto Compare to Traditional Currency? https://www.tradestation.com/learn/market-basics/cryptocurrencies/the-basics/how-does-crypto-compare-to-traditional-currency/ | Accessed 26 Apr 2022
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  • DailyCoin. “What Happens to ETH If It Becomes PoS?” DailyCoin.Com, 5 July 2021, dailycoin.com/what-happens-to-eth-if-it-becomes-pos.
  • Editorial Staff. “Why Is Ethereum Switching From Proof of Work to Proof of Stake?” Business Magazine - Ideas and News for Entrepreneurs, 15 June 2021, www.businessmagazine.org/why-is-ethereum-switching-from-proof-of-work-to-proof-of-stake-15620.
  • Ethereum. “Proof-of-Work (PoW).” Ethereum.Org, ethereum.org/en/developers/docs/consensus-mechanisms/pow. Accessed 26 Apr. 2022.
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  • Nuzzi, Lucas. “Monero Becomes Bulletproof - Digital Asset Research.” Medium, 19 Oct. 2018, medium.com/digitalassetresearch/monero-becomes-bulletproof-f98c6408babf.
  • “What Is a Stealth Address?” Investopedia, 25 Feb. 2022, www.investopedia.com/terms/s/stealth-address-cryptocurrency.asp.
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