Five Minute Blockchain Newsletter No. 40

Five Minute Blockchain Newsletter No. 40

Five Minute Blockchain

Welcome to a new edition of the TruBlo newsletter. We are funding 45 early-stage blockchain ideas to explore new options for “trusted content on future blockchains”. A list of all TruBlo projects is here:

Our main question for selecting news and links: How is the field of blockchain, content and trust evolving?

Estimated reading time: 5 min 12 secs

Updates this week:


FTC sues US data broker Kochava

The Federal Trade Commission (FTC) has filed a suit against Kochava, a US-based data broker.

“Kochava’s data can reveal people’s visits to reproductive health clinics, places of worship, homeless and domestic violence shelters, and addiction recovery facilities. The FTC alleges that by selling data tracking people, Kochava is enabling others to identify individuals and exposing them to threats of stigma, stalking, discrimination, job loss, and even physical violence. The FTC’s lawsuit seeks to halt Kochava’s sale of sensitive geolocation data and require the company to delete the sensitive geolocation information it has collected.”


The Guardian

Two-thirds of UK youth are not interested in crypto

A survey conducted by youth marketing agency Seed in May 2022 showed low interest in cryptocurrency among young people in Britain.

“Responses revealed that 66% of so-called ‘zoomers’ aged 18-24 are not interested in cryptocurrency, with 10% willing to try it but won’t prefer it over other investments. It canvassed 2,000 people during May, which was the depths of the crypto crash. Women are even less interested in crypto, with three-quarters giving it a thumbs down. In contrast, half of men are willing to give it a try.The situation for NFTs was even worse, with 70% believing non-fungible tokens (NFTs) are scams.”

Ledger Insights

Facebooks pervasive pixel

A study using technology from Mozilla reveals the extent of data collection around the world.

The Markup

People buying guns with cryptocurrency leave a digital trail

Gun owners in the USA want no or minimal data registration about purchases and ownership. But buying weapons with crypto could leave an unintentional digital trail.



Sources: Netflix plans to launch ad tier in November, to be ahead of Disney+

In July, the company announced to plan for the introduction in early 2023. Now it looks like the launch will be done earlier for markets in the US, Canada, UK, France and Germany.


Google blocks TruthSocial app because of violent content

TruthSocial is a social media platform initiated by former US president Donald Trump after being banned from Twitter. Now it seems Google will not allow the app to be downloaded via the Google Play Store.


French government uses AI to detect undeclared swimming pools

In France, homeowners must declare a swimming pool for accurate property tax. Authorities are now using machine learning software to analyse aerial photos.

“The software, developed in partnership with the consulting firm Capgemini and the US digital giant Google, was tested in nine regions — Alpes-Maritimes, Var, Bouches-du-Rhône, Ardèche, Rhône, Haute-Savoie, Morbihan, Maine-et-Loire and Vendée — and revealed more than 20,000 undeclared swimming pools, according to a report by the directorate. “


Twitter tests an edit button for Tweets

A tweet can be edited for up to 30 minutes, and the edit history will be shown to users. The feature has been requested for a long time, though critics feat that the edit option might open the door to misuse.

The Verge

Little kids yelling “poop” at Alexa are driving up profits for some songs

“Pecunia non olet” is a Latin proverb that means “Money does not smell”. Now, some musicians report that songs with the word “poop” are getting many plays. The assumption is that this happens because little kids yelling “poop” activate Alexa.



Helium developers propose switching to Solana

According to a blog post by the Helium Foundation, the platform wants to free up resources needed to develop and maintain its own blockchain and instead plans to switch to Solana.

“Developers behind the Helium network – a grid of medium-range wireless hotspots pitched as an alternative to hard-wired internet service – are proposing to migrate away from the project’s own blockchain onto Solana, in pursuit of faster transaction speeds, higher uptimes and more interoperability with other blockchains as key reasons. The Helium Foundation wrote in a Medium post this week that the new proposal from the Helium core developer team would improve the operational efficiency “significantly.” The proposal to move toward Solana and away from Helium’s own blockchain, officially known as HIP 70, “addresses network speed, reliability and scalability”.


Web3 is going great

Misplaced decimal allowed traders in Georgia to cash out at 100x the regular price

Coinbase tries to get its money back after discovering that in late August, Georgia traders could cash out crypto at 100 times the intended market rate. The Georgian Lari (GEL) exchange rate was 290, not 2,90. As a result, an estimated 900 traders could sell their holdings at a considerable profit. Coinbase is now seeking payback; accounts have been locked in some cases. The misplaced decimal point was not detected for seven hours.


Market analysis: The state of crypto banks in 2022

Users: From October 2021 to May 2022, saw its user base grow from 10M to 50M, an increase of 400%. Similarly, the number of Nexo users doubled from over 2M to over 4M from September 2021 to May 2022. Crypto lending has surged over the last two years and publicizes a vision of financial services where lenders and borrowers avoid the traditional financial firms that position themselves as the gatekeepers for loans or other products.

Company size: While some crypto banks are facing hiring headwinds, others are unperturbed amid market volatility. In June 2022, BlockFi announced a 20% layoff — the company headcount dropped from about 850 in January to about 680 by the end of July. Meanwhile, Nexo’s LinkedIn headcount has jumped nearly 60% since January 2022.


Short links

  • Google and YouTube outline plans for content moderation in US midterm elections TechCrunch
  • How to add DuckDuck Go Privacy Essentials to your browser ZD Net
  • Web3 Domain Name Service Could Lose Its Web Address Because Programmer Who Can Renew It Sits in Jail Coindesk
  • Snap appears to have axed its Web3 team as part of the social media company’s decision to restructure and cut its headcount by about 20%. Blockworks
  • 62% of wallets did not sell Bitcoin for a year amid a bear market Cointelegraph

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Photo by Bernard Hermant on Unsplash


DONS: Dynamic Optimized Neighbor Selection for Smart Blockchain Networks (Research)

DONS: Dynamic Optimized Neighbor Selection for Smart Blockchain Networks (Research)

Below is an abstract of a scientific article, which has been accepted for publication by a prestigious journal. The findings are related and useful for the funded project of the team. Their project in TruBlo is called FogBlock4Trust. Findings from the work below are used in the project.


Hamza Baniata, Ahmad Anaqreh, Attila Kertesz


DONS: Dynamic Optimized Neighbor Selection for Smart Blockchain Networks”, Future Generation Computer Systems

Main points:

  • We propose DONS for enhancing Blockchain networks in terms of Finality and Fidelity.
  • We propose AnoLE, a privacy-aware method for leader election in public Blockchains.
  • DONS showed optimum message propagation in different network models and sizes.
  • Our methods provide high security and privacy measures compared to current methods.


Blockchain (BC) systems mainly depend on the consistent state of the Distributed Ledger (DL) at different logical and physical places of the network. The majority of network nodes need to be enforced to use one or both of the following approaches to remain consistent:

  • (i) to wait for certain delays (i.e. by requesting a hard puzzle solution as in PoW and PoUW, or to wait for random delays as in PoET, etc.)
  • (ii) to propagate shared data through the shortest possible paths within the network.

The first approach may cause higher energy consumption and/or lower throughput rates if not optimized, and in many cases, these features are conventionally fixed. Therefore, it is preferred to enhance the second approach with some optimization.

Previous works for this approach have the following drawbacks: they may violate the identity privacy of miners, only locally optimize the Neighbor Selection method (NS), do not consider the dynamicity of the network, or require the nodes to know the precise size of the network at all times.

In this paper, we address these issues by proposing a Dynamic and Optimized NS protocol called DONS, using a novel privacy-aware leader election within the public BC called AnoLE, where the leader anonymously solves the “The Minimum Spanning Tree” problem (MST) of the network in polynomial time.

Consequently, miners are informed about the optimum NS according to the current state of network topology. We analytically evaluate the complexity, security and privacy of the proposed protocols against state-of-the-art MST solutions for DLs and well-known attacks. Additionally, we experimentally show that the proposed protocols outperform state-of-the-art NS solutions for public BCs. Our evaluation shows that the proposed DONS and AnoLE protocols are secure, private, and they acutely outperform all current NS solutions in terms of block finality and fidelity.

Fig. 1. Phases and steps of the proposed DONS protocol. Each step is performed by one (or more) system entity(s).
A step may depend on the result of a preceding step of the current round, or on the result of a subsequent step of the previous round.

Full paper:

DONS: Dynamic Optimized Neighbor Selection for Smart Blockchain Networks”, Future Generation Computer Systems, Volume 130, May 2022, Pages 75-90

Go to journal home page - Future Generation Computer Systems

Creative Commons Attribution-NonCommercial-No Derivatives License (CC BY NC ND).

Report: Energy Efficiency of Blockchain Technologies

Report: Energy Efficiency of Blockchain Technologies

The EU Blockchain Observatory and Forum (EUBOF)  has published updated new findings and views regarding the energy efficiency of blockchain technologies. This topic, specifically for the mining of Bitcoin blockchain assets, is the subject of debate.

Based on reports about massive energy demand for mining Bitcoins questions arose as to the sustainability of such technologies. Based on the analysis and comparison of different Blockchain technologies a set of recommendations are made.

The paper provides a number of recommendations to policy makers.

The report is 50 pages long. Download is free.



Trends and Scenarios for Blockchain, Fintech and Crypto – 2021

Trends and Scenarios for Blockchain, Fintech and Crypto – 2021



Background: For years now Futurist Amy Webb and her team at the Future Today Institute in New York City publish insightful trend reports. The researchers dig through mountains of material, the goal is to find out how new developments will affect business and society. By now the yearly Tech Trends report has become a highly important source for many organisations around the world. The findings help to develop individual strategies and start to innovate.

  • How is the report organised? The entire Tech Trend report delves into more than 500 trends. For the 2021 edition, this 14th annual Tech Trend report is split up into 12 smaller reports, based on topics. One of those covers blockchain, which is what we care about here.

Key elements of the 2021 Tech Trends Report

Overview of 2021 Tech Trends Report

Six indicators for each trend

To make the importance of each trend clearer, the report provides six indicators for each.These indicators are very helpful to understand whether a trend is important right now or over a longer period. Below are the six indicators used in the Tech Trend Report.

  • Years on the list: Some trends show up for the first time, others have been reported upon for several years. It must be noted that some trends take more than a decade to fully evolve. Others fade away when expected technologies are not evolving or when buyers are not interested as expected. 
  • Key insight: A brief description of the trend, in simple words. This alone is helpful, simply to learn about many trends which are new and relevant. 
  • Examples: Providing examples of the trend at work, by naming projects and companies.
  • Disruptive impact: What the trend might mean for business, government or society
  • Emerging players: “Individuals, research teams, startups or other organizations emerging” around the specific trend 
  • Action scale: As a conclusion, the Tech Trend report provides recommended actions. These are ranging from “Watch closely” to “Informs strategy” to “Act now”. The latest stage is reached when uncertainty is low, there is data supporting the trend evolution. 

Key trends for blockchain, fintech and crypto

  • The trends report is not just cheerleading further growths of tech.  While some developments are seen as solutions to problems, the researchers warn about pessimistic scenarios for some trends, for example, the idea of “Human IPOs” (where people auction off their time, decisions). 
  • The TruBlo take: What we found interesting: There are many opportunities for far-ranging impact for society, for example by making remittances simpler, easier and cheaper. The social aspects, over time, should be as important as the speculative, purely financial aspects of blockchain and crypto. By being of value for many and being reliable the chances for blockchain technology to fulfil expectations and promises is much more likely than simply using it for casino-style speculation.

General observations

The report starts with a summary of recent observations around blockchain and new finance platforms. These are not trends, but current conditions and characteristics of the blockchain field. The key observations, as reported by The Future Today Institute, are:

  • Existing, large crypto holdings enable investments for innovation. 
  • Decentralised financial instruments will be adopted by enterprises
  • Four dozen countries are piloting digital fiat sovereign currencies
  • Blockchain is adopted for supply chain management, often for environmental purposes
  • Big demand for impartial and secure financial systems for fast (and low-cost) transactions
  • Smart contracts could remove intermediaries
  • Fractional ownership might evolve, based on the option to sell and trade tiny parts of an asset with crypto money fractions

Blockchain trends for 2021

Trend 1: Central Bank-Backed Digital Currencies (CBDCs)

There are big forces at work here. Should central banks enable digital currency, the whole cryptosystem would get a big boost. There are many positive aspects here: Payments could be executed faster, with fewer costs. What authorities try to avoid at all costs are big mistakes, such as sudden security problems, money theft or other illicit activity.

Examples (from Tech Trends Report) to better understand this trend: “In 2018, the Marshall Islands created a new digital currency called the Sovereign (SOV), which is now legal tender in the Micronesian nation. Singapore’s central bank created a digital currency backed by the Singapore dollar that runs on the Ethereum blockchain. Canada’s central bank has been researching the issuing of digital currency. China is the undisputed leader in CBDCs, successfully executing a large-scale pilot of more than 4 million digital yuan transactions from April to December 2020. An international coalition of central banks, including the Bank of Canada, Bank of England, Bank of Japan, European Central Bank, and U.S. Federal Reserve, issued a report in October 2020 outlining key principles for CBDCs.

Trend 2: Stablecoins

A stablecoin is a digital currency, but with the value connected (“pegged”) to a real-world currency. Quote from the report: “Stablecoins—specifically those pegged to the U.S. dollar—open up a universal means of exchange across the globe without traditional financial hurdles. People can now store savings in a stable asset rather than a local currency suffer- ing from inflation, and stablecoins offer faster, more affordable remittances.”

Trend 3: Social payments

The title of this trend initially a little misleading. It’s not so much about social, but about shifting payment features to social media platforms – to then be able to offer payment services like banks and credit cards. The trend is already huge. It will likely accelerate a global trend to move from cash money to digital tools, such as payment apps on mobile phones.

  • Examples (quoted from Tech Trend Report): “In 2009, Venmo became the first social payment app, requiring users to caption their transactions and offering the option to share transactions publicly. Owned by PayPal, it now has 300 million users, and social payments is a serious financial service sector. China’s Alipay gives its 870 million users access to wealth management services, loan applications, and credit scores—and issued half a billion dollars in Chinese loans in 2020. Face- book’s new WhatsApp Pay has 400 million users in India. Apple and Goldman Sachs created a credit card for iPhones and Apple Watches. Uber Money will build a bank for its drivers. Amazon is exploring a checking account service to go with its existing branded credit card. This year, Google will launch GooglePlex, a banking app integrated with Google Pay—creating a single app to pay businesses and peers, manage savings, and conceivably even apply for loans.”

Trend 4: Content Provenance and Permanent Archiving

One use case for blockchain which has not been mentioned that often: Content verification, content provenance (who published something and when) and permanent archiving (as a means against censorship).

Quote: “Blockchains can be used as a universal index of content authorship and edits. This is a powerful tool to authenticate content and to combat censorship and misinformation.


Trend 5: Automated Credit risk modelling

This trend does not rely on blockchain, but on the introduction of AI (Artificial Intelligence) to credit risk calculation. The danger here is that a system analyzed by machines might lead to unintended, but nevertheless, the extremely harmful bias of a system against certain lender groups in society e.g. marginalised communities.

  • DISRUPTIVE IMPACT: “In many cases, using AI in credit modelling has increased bias against marginalized groups. However, automated processes based on behaviour, and not demographics, could result in more just and equitable outcomes.”

Trend 6: Decentralized Exchanges and Automated Market Makers 

Examples (from Tech Trend Report): “Centralized markets like the New York Stock Exchange or Nasdaq maintain fair, consistent, and transparent processes for publishing prices and orders, where market makers provide liquidity with both buy and sell positions. In cryptocurrencies and fully electronic markets, algorithms typically price assets, rather than traditional market books. Ethereum-based decentralized exchange Uniswap surpassed $50 billion in lifetime volume, despite concerns about liquidity and volume from darknet markets. Just months after its 2020 start, hit more than $47 billion in volume and became a decentralized finance leader. Total trading volume for these exchanged ballooned to $6 billion as of the first half of last year, up from $2.5 billion in 2018 and 2019.”

Trend 7: Web 3.0

This trend is about new options, extended capabilities of browsers, including financial or near-financial transactions. From the report: “Web 3.0 allows for web browsers and mobile applications to perform more complex processes and enable entirely new kinds of transactions.”

  • Examples: “Collaboration and decentralized creation are accelerated in Web 3.0—often referred to as the semantic web. Advanced techniques in data mining, natural language processing, and text analytics will make gathering and understanding unstructured data much easier. Plus, artificial intelligence and machine learning allow machines to collaborate directly with one another and, eventually, teach one another. In media, Otoy is cutting the costs of 3D visual effects production with a decentralized, distributed network of partners that can chip in spare processing power with a digital token known as RNDR. The InterPlanetary File System, a peer-to-peer hypermedia protocol, facilitates decentralized file sharing and cloud computing. Companies like Blockstack and Cosmos are building networking products that will unlock a new generation of applications and services.”

Trend 8: Smart Royalties

  • Quote from the report: Blockchain networks like Ethereum offer new ways to track ownership, licensing, and royalties through smart contracts or self-executing agreements in which the terms are directly written into lines of code.
  • Sample page from 2021 tech trends reportBlockchains form the foundational infrastructure layer for new, low-friction ways to automate royalty payments for digital intellectual property. A smart contract, for instance, could automatically pay an artist when her song is streamed or simply track the number of times people share online content, preserving it in a shared public database.
  • Example: Blockchain is at the core of the Open Music Initiative (OMI)—made up of IBM, Netflix, Pandora, and Spotify—which is developing a standardized open-source protocol and APIs for the music industry. OMI launched a pilot with the Massachusetts Institute of Technology that lets Berklee College of Music students license their work to other universities.

Trend 9: Distributed Computing for a Cause

For example: “…the Golem network, uses Ethereum blockchain and lets people rent out idle computing resources like storage, processing power, or band- width to render computer-generated images, conduct DNA analysis, and tackle machine learning tasks.”

Screenshot of Golem Network Homepage

Screenshot of Golem Network Homepage

Trend 10: Fractional Ownership

  • Quote from the report: “Fractional ownership, commonly associated with time-shares, allows unrelated parties to divide costs and risks in order to collectively own an asset. Now that the concept is being applied to blockchain and digital platforms, it can unlock new ways to purchase and own assets, whether they’re in fine art, stocks, or other markets.”

This trend shows how far-reaching changes in financial systems can be. Co-sharing has potential. But one must be very careful to not allow scams from the past to be repeated in the digital world.

Trend 11: Self-Funding Digital Infrastructure

  • Quote: “Although much of the internet relies on free open-source software, people are more inclined to use it than maintain it— which is difficult and often leads to burn-out of key contributors. Gitcoin, which caters primarily to the Ethereum blockchain community, created a marketplace of bounties for open-source developers who want to contribute to projects and earn income for their work. Since 2017, Gitcoin has facilitated $10.6 million open-source software projects. Other crypto projects, such as Zcash, earmark a portion of each “block reward”—the number of new coins that enter the circulation as the crypto is mined—to go toward community development.”

Trend 12: Non-fungible tokens and Digital Collectibles

Non-fungible tokens are a variety of crypto assets. In essence, they can not be split up. Instead, they are a link or identifier for a specific, unique asset – such as a work of art or a video or a song. On exchanges, it is possible to buy this item and then own it exclusively, though only in digital form.

  • NBA Top Shot, the recent auction of Beeples work via Christie’s are good examples. “As more aspects of our lives shift online, demand for digital status symbols and personal expression will increase.” Blockchains enable digital tokens that are provably unique and scarce. As a result, digital collectables are now a growing feature of eSports, online gaming, and social networks. These unique tokens have a variety of applications—from personal expression to commerce to investing. 


Inserted into the blockchain trend report are three scenarios. These are larger possible evolutions, such as agreements on new global exchanges. The most interesting, in our opinion, is a scenario called “A new Bretton Woods”. The scenario could evolve around the concept of a “bancor”, a supranational currency for global trade. This would mean that not one country has a dominance in international trade or profits from the demand for its currency.

There is a negative scenario in the report, too. It is about a very new trend on some new social networks, where people (celebrities, influencer) can “go public”. This would mean that others can invest in them, with money or engagement. This scenario brings up a number of red flags because it might easily cross borders in a very negative way.

Key take-aways

Here are the key insights from the blockchain report:

  • Strategy: Innovative use cases for blockchain abound, but the complexity of the ecosystem remains a hurdle for most companies 
  • Innovation: Companies interested in blockchain struggle to find meaningful use cases. Chief innovation officers can champion companywide ideation to identify value, brainstorm new use cases, test desirability and feasibility, create a proof of concepts with paper or functional prototypes, and launch new pilots— with systems to collect data, test, and evaluate applications. Within many organizations, blockchain enthusiasts are hiding in plain sight, ready to contribute to new initiatives. 
  • R&D: More work is needed: re-searching bitcoin’s long-term economic security and addressing the protocol risks of crypto-currencies and deep code reviews. 
  • Risks: In the longer term, as smart contracts and blockchain peer-to-peer frameworks gain acceptance, business models must transform. Blockchain will reduce operational costs and increase efficiencies. Human-based trust models will transition to algorithmic ones, potentially exposing companies to new risks. 

Questions to ask

In general, any organisation should at least watch what is going on in blockchain and the financial markets. The trend is strong. It is partially good, partially dangerous that most of the markets are only used by small “insider communities”. The general public, so far, has not found wide-ranging use cases for crypto. But that might change, although only after some crashes and large scale scams. Once the systems reach a certain maturity later, the questions to ask are:

  • How will blockchain drive the efficiency of business practices?
  • Is there adequate planning for the longer term? And which assumptions must hold true for the current strategy to succeed?
  • Which parts of an organizations business are vulnerable to disruption by blockchain?

Download PDF

The Study About Dis-Information You Should Read

“Information Disorder” is one of the best studies to read if you want to get involved in the fight for trustable content. Written by Claire Wardle and Hossein Derakshan, two experts in the field, the study provides a structured overview. This helps to first understand the problem of false and falsified information. The study goes beyond simply describing the problem.  Instead, it provides a “framework for policy-makers, legislators, researchers, technologists and practitioners” who need to work together for results. 


A need for collaboration


The report acknowledges that the phenomena are not new. False rumours and campaigns using false information existed before the internet. What has changed recently is the scale of “information pollution”. False information can spread faster, making it more complex to provide correct facts. “Information Disorder” suggests that there is an urgent need to work collaboratively to find solutions. To get there the report provides a detailed framework of possible actions. 


As a helpful overview, the report visualises the three key forms of information disorder, side by side. 


Information disorder

From just false to outright harmful: Forms of information disorder. Source: Information Disorder, 2017.

  • Mis-information is when false information is shared, but no harm is meant.
  • Dis-information is when false information is knowingly shared to cause harm.
  • Mal-information is when genuine information is shared to cause harm, often by moving information designed to stay private in the public sphere.

The study suggests clearly to not use the label “fake news”, with reason:

“In this report, we refrain from using the term ‘fake news’, for two reasons. First, it is woefully inadequate to describe the complex phenomena of information pollution. The term has also begun to be appropriated by politicians around the world to describe news organisations whose coverage they find disagreeable. In this way, it’s becoming a mechanism by which the powerful can clamp down upon, restrict, undermine and circumvent the free press.”

Information Disorder, 2017


Why it matters: If we want to curb the amount of wrong information we must understand first that an unintended communication mistake has to be separated from a campaign using entirely fabricated info. This applies to both technical tools against such information as well other forms of activism in this space.

The study asks the key questions: Who is creating disinformation? Why are they doing it and what are their goals? This is extremely important for any initiative in this field: Only when we understand why some groups use this instrument we have a real chance to block, filter or expose intentional mis- and mal-information. 

As the study comes from two authors with a writing/journalism background they take a look at how and why people consume such content and why – at times – they start to belief in what is presented them and even re-distribute the content. Why is this? “A key argument within this report, which draws from the work of the scholar James Carey, is that we need to understand the ritualistic function of communication. Rather than simply thinking about communication as the transmission of information from one person to another, we must recognize that communication plays a fundamental role in representing shared beliefs. It is not just information, but drama”

The role of social platforms: “Information pollution” can affect all complex topics – health and medical, economy and ecology. As such the occurrence of false information and the use as a tool is not new. But a difference now is that social media platforms amplify the reach and encourage users to post material which might earn them approval from others – through likes and other subtle forms of positive feedback.

“It is not just information, but drama”


Step by step the authors develop a framework of recommendations and actions for multiple interest groups: Administrations, public bodies, governments, the civil society and – of course – media organisations. What makes the study helpful is that these lists of tips are straight-forward and simple. In combination, one could hope though that the numerous counter-activities help to fight information disorder, over time.


Download the 2018 version of the report here: Information Disorder (free, no registration)