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What does Proof of Stake (PoS) mean in cryptocurrencies?

What is Proof of Stake (PoS)?
Proof of Stake is a blockchain consensus mechanism for processing transactions and creating new blocks. A consensus mechanism is a method for validating entries in a distributed database and keeping it secure. In the case of cryptocurrency, the database is called a blockchain, so the consensus mechanism secures the blockchain.
Find out more about Proof of Stake and how it is different from Proof of Work. Plus, learn about the problems proof-of-stake attempts face in the cryptocurrency industry.
Key points
- With Proof-of-Stake (POS), validators are chosen based on the number of staked coins they have.
- Proof of Stake (POS) was created as an alternative to Proof of Work (POW), the original consensus mechanism used to validate transactions and open new blocks.
- While PoW mechanisms require miners to solve cryptographic puzzles, PoS mechanisms require validators to hold and stake tokens for the privilege of earning transaction fees.
- Proof of Stake (POS) is considered less risky regarding the potential for a network attack, as it structures compensation to make an attack less profitable.
- The next block writer on the blockchain is selected randomly, with higher stakes awarded to nodes with larger staking positions.
Investopedia / Create Taylor
Understanding Proof of Stake (PoS)
Proof of Stake reduces the computational work needed to verify blocks and transactions. Under the test of work, heavy IT requirements have maintained the blockchain Safe. Proof of Stake changes the way blocks are verified using coin holder machines, so you don’t need to do as much computational work. Owners offer their coins as collateral, called staking, for a chance to validate blocks and earn rewards.
Validators are randomly selected to confirm transactions and validate block information. This system randomizes who gets to collect commissions rather than using a competitive reward-based mechanism like proof of work.
To become a validator, a coin owner must “stake” a specific amount of coins. For example, Ethereum requires staking 32 ETH before a user can run a node. Blocks are validated by multiple validators, and when a specific number of validators verify that the block is accurate, it is finalized and closed.
To activate your validator you will need to stake 32 ETH; however, you do not need to stake such a large amount of ETH to participate in the validation. You can join validation pools using “liquid staking” which uses an ERC-20 token representing your ETH.
Different proof-of-participation mechanisms can use various methods to reach consensus. For example, when Ethereum introduces sharding, a validator will verify transactions and add them to a block shard, which requires no more than 128 validators to form a voting “committee.” Once shards are validated and a block is created, two-thirds of the validators must agree that the transaction is valid, then the block is closed.
How is Proof of Stake different from Proof of Work?
Both consensus mechanisms help blockchains synchronize data, validate information, and process transactions. Each method has proven effective in maintaining a blockchain, although each has pros and cons. However, the two algorithms have very different approaches.
In PoS, block creators are called validators. A validator checks transactions, verifies activity, votes on results, and maintains records. Under PoW, block creators are called miners. Miners work to solve a hashing problem to verify transactions. In exchange for solving the problem, they are rewarded with a coin.
To “acquire” the position of becoming a block creator, you must own enough coins or tokens to become a validator on a PoS blockchain. For PoW, miners must invest in processing equipment and incur large energy costs to power the machines that attempt to solve the calculations.
The equipment and energy costs involved in PoW mechanisms are expensive, limiting mining access and strengthening the security of the blockchain. PoS blockchains reduce the amount of processing power needed to validate block information and transactions. The mechanism also reduces network congestion and eliminates reward-based incentives offered by PoW blockchains.
Block creators are called validators | Block creators are called miners |
Participants must own coins or tokens to become validators | Participants must purchase equipment and energy to become miners |
Energy efficient | Not energy efficient |
Safety through community control | Robust security thanks to expensive initial requirements |
Validators receive transaction fees as rewards | Miners receive rewards and commissions for blocks |
Proof-of-Stake Objectives
Proof of Stake is designed to reduce network congestion and address environmental sustainability concerns surrounding the Proof-of-Work (PoW) protocol. Work test it is a competitive approach to verifying transactions, which naturally encourages people to look for ways to gain an advantage, especially since monetary value is involved.
Bitcoin miners earn bitcoins by verifying transactions and blocks. However, they pay operating expenses, such as electricity and rent fiat currency. So what’s really happening is that miners are exchanging energy for cryptocurrency, which causes PoW mining use the same amount of energy as some small countries.
The PoS mechanism seeks to solve these problems by effectively replacing staking with computing power, whereby the network randomizes an individual’s mining ability. This means there should be a dramatic reduction in power consumption as miners can no longer rely on massive farms of disposable hardware to gain an advantage. For example, Ethereum’s transition from PoW to PoS reduced the blockchain’s energy consumption by 99.84%.
The first cryptocurrency adopt the PoS method was Peercoin. Many others followed soon after, but Ethereum was the blockchain where it had the greatest impact.
Proof of Stake security
Long touted as a threat to cryptocurrency fans, the Attack at 51%. This is a problem when using PoS, but it is unlikely to occur. With PoW, a 51% attack occurs when one entity controls more than 50% of the miners in a network and uses that majority to alter the blockchain. In PoS, a group or individual should own 51% of the staked cryptocurrency.
It is very expensive to control 51% of the staked cryptocurrency. According to Ethereum PoS, if a 51% attack occurred, honest validators in the network could vote to ignore the altered blockchain and burn the ETH staked by the perpetrator. This incentivizes validators to act in good faith for the benefit of the cryptocurrency and the network.
Most other PoS security features are not advertised, as this could create an opportunity to circumvent security measures. However, most PoS systems have additional security features that add to the inherent security behind blockchain and PoS mechanisms.
What is the difference between Proof of Stake and Proof of Work?
Proof of Stake (POS) uses randomly selected validators to confirm transactions and create new blocks. Proof-of-Work (POW) uses a competitive validation method to confirm transactions and add new blocks to the blockchain.
What is Proof of Stake for Dummies?
Proof of Stake is a consensus mechanism in which distributed cryptocurrency validator programs share the task of validating transactions.
What are the disadvantages of Proof of Stake?
With Proof of Stake (POS) consensus, users generally need to own a cryptocurrency before they can participate in the consensus and earn more cryptocurrencies. To host a full validation node on Ethereum, a user needs to stake 32 ETH, which is very expensive. Another disadvantage of PoS is that on blockchains with smaller networks, a high minimum stake could lead to centralization.
Is Ethereum a PoS or PoW?
Ethereum uses proof-of-stake as its consensus mechanic. Full validation nodes require a stake of 32 ETH, but other participants can take part in the consensus by delegating their ETH to a validator or participating in staking pools. Users can also stake small amounts of ETH on their own, but no reward is earned.
The bottom line
Proof of Stake is a mechanism used to verify blockchain transactions. It differs significantly from proof of work, mainly in that it incentivizes honest behavior by rewarding those who put up their cryptocurrencies as collateral for a chance to earn more.
The comments, opinions and analyzes expressed on Investopedia are for online information purposes. Read ours warranty and exclusion of liability for more information.
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Blockchain Technology Will Transform Water Access and Management Globally

Disclosure: The views and opinions expressed here are solely those of the author and do not represent the views and opinions of the crypto.news editorial team.
Access to clean water is a basic human need, yet billions of people around the world still struggle to get it. According to the World Health Organization, over 2 billion people live in countries suffering from severe water stress, and this number is expected to continue to grow due to climate change and population growth.
Traditional water management systems have struggled to address these challenges, often hampered by inefficiencies, lack of transparency, and misallocation of resources. Blockchain technology offers a promising solution to these challenges, providing equitable access and sustainable use of this crucial resource.
The current state of water management
Water management today faces several pressing issues. Inefficiencies in water supply, distribution, and use, coupled with a lack of real-time monitoring, often result in resource waste and misallocation. Many water sources fail to realize their full potential due to infrastructure and financing shortfalls. For example, the Environmental Protection Agency (EPA) report indicated that the United States would need to invest $625 billion over the next 20 years to repair, maintain and improve the country’s drinking water infrastructure due to aging pipes and other infrastructure problems. Additionally, in the United States alone, household leaks can to waste nearly 900 billion gallons of water per year nationwide. This is equivalent to the annual domestic water consumption of nearly 11 million homes.
Furthermore, corruption and mismanagement of water resources can cause unequal distribution, with disadvantaged communities often bearing the brunt of water scarcity. For example, South Africa is struggling with myriad challenges to its water security: drought, inadequate water conservation measures, outdated infrastructure, and unequal access to water resources. The country faces significant water scarcity, with demand expected to outstrip supply by 2030, creating a projected gap of 17%.
Furthermore, the global water industry is highly monopolized, with a few key players controlling a significant share of the market. These companies exert substantial influence over the water supply chain, often prioritizing profit over equitable distribution and environmental responsibility. This concentration of power can lead to inflated prices and limited access for vulnerable populations. The global bottled water market alone is projected to reach $509.18 billion by 2030, with these large companies capturing a significant share of revenue. This monopolization exacerbates existing inequalities in water access and highlights the need for more decentralized and community-driven water management solutions.
Source: Grand View Search
The potential of blockchain in water management
Blockchain technology can address these issues by providing a transparent, secure, and decentralized platform for water resource management. This approach offers several advantages:
- Transparency and accountability. Blockchain’s immutable ledger ensures that all transactions and data entries are transparent and cannot be changed once recorded. This transparency can reduce corruption and ensure that water resources are allocated fairly and efficiently. For example, blockchain can be used to track water usage from source to end user, providing a clear record of how water is distributed and used. This level of transparency can help hold authorities accountable and manage water resources sustainably.
- Efficient resource management. Blockchain can facilitate the creation of smart contracts, which are self-executing contracts with the terms of the agreement written directly into the code. These contracts can automate water distribution based on real-time data, directing water to where it is needed most. For example, smart contracts could be used to manage urban water supply systems, automatically adjusting water distribution based on real-time consumption patterns and demand. This can help optimize water use, reduce waste, and ensure that households and businesses receive the right amount of water at the right time.
In Dubai, the Dubai Electricity and Water Authority (DEWA) has implemented a blockchain-based smart water network initiative as part of its broader smart city strategy. This project integrates blockchain technology with IoT sensors to monitor water usage in real time, manage distribution, and detect leaks. The decentralized ledger ensures data integrity and transparency, enabling more efficient water management and reduced waste. DEWA’s initiative aims to improve sustainability and resource management in the rapidly growing city, highlighting the potential of blockchain to support urban water management and conservation efforts.
Community participation and ownership
Through blockchain, individuals can directly control and monetize their access to water resources, eliminating the need for third-party intermediaries. This direct control model allows local communities to make collective and transparent decisions about their water use. By managing their water directly from the source, communities can tailor water management practices to their specific needs, promoting equitable distribution and encouraging a sense of accountability and stewardship.
Additionally, future models could allow people to monetize their access to water through web3 technologies. For example, a community-to-business (C2B) model could allow people to sell water directly to companies. In this model, people do not have to own the water directly, but can profit by staking their tokens during event sales pools. This approach not only supports sustainable water management, but also creates economic opportunities for community members. Additionally, a “Burn to Secure” protocol can be used to provide water allocation rights. This protocol provides a true sense of water security and financial opportunity by allowing people to redeem their rights. This system not only secures future water allocations, but also increases token scarcity and value.
Additionally, a pure sense of investment is achieved through investments in water sources. This leads to potential financial returns and dividends by addressing the inefficiencies in water supply mentioned above. By investing to finance infrastructure projects, such as building factories and improving distribution systems, more water can be brought to communities, creating additional economic opportunities.
Monetizing water access through the C2B model, the “Burn to Secure” protocol, and investments in water sources all generate economic benefits for the community, promoting a more equitable and efficient water management system.
Overcoming challenges
While blockchain technology has the potential to improve water management, there are challenges to its adoption. The complexity of blockchain systems and the need for technological infrastructure can be barriers, especially in developing regions. Additionally, there are concerns about the significant energy consumption of blockchain networks. However, technological advances and the development of more energy-efficient blockchain solutions are helping to alleviate these concerns. Additionally, education and capacity building are key to ensuring stakeholders understand how to effectively use blockchain technology. Governments, NGOs, and private sector partners need to work together to provide training and support to communities and water management authorities.
Blockchain technology offers a practical and effective means to improve water management. In addition to addressing inefficiencies, blockchain empowers communities, promotes sustainable practices, and opens up new economic opportunities through models like community-to-business (C2B). As we face the growing challenges of climate change and population growth, blockchain is not only an innovative solution, but represents a fundamental shift in the way we manage and value water resources. Adopting blockchain in water management is essential to creating a sustainable and equitable future by changing the way we interact with and protect our most vital resource.
Jean-Hugues Gavarini
Jean-Hugues Gavarini is the CEO and co-founder of LAKE (LAK3), a real-world asset company leveraging blockchain technology to decentralize access to the global water economy. LAKE aims to ensure access to clean water for all, protect water resources, and deliver water to those in need through innovative technologies. Jean-Hugues has a diverse career spanning the luxury, fashion, and footwear industries. His career path includes notable successes at Mellow Yellow, Cremieux, and Tod’s. Raised between Silicon Valley and the French Alps, Jean-Hugues has always been immersed in technology and freshwater resources. In 2018, Jean became the CEO of Lanikea Waters, a water solutions entity based in the French Alps. In 2019, the concept of LAKE was born, embodying his commitment to innovation and sustainability.
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Blockchain and AI Expo 2024

With rapid advances in the world of AI and blockchain, there are opportunities to leverage the security and transparency features of blockchain to improve the reliability and trust of AI systems and data transactions.
Explore the synergy of these advanced technologies in virtual mode Blockchain and AI Expowhich takes place on October 31, 2024 TO 10:00 GMT.
The event features cutting-edge presentations led by leading experts in evolving fields. Presentations are set to explore opportunities and challenges in the fusion of blockchain and AI, real-world applications, ethics, innovations in environmental sustainability, and more!
Gain a comprehensive understanding of how these technologies can synergistically drive innovation, optimize operations, and promote strategic growth opportunities. Develop your knowledge to facilitate informed decision making and give your company a competitive edge in the growing technology landscape.
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Nigeria Eyes National Blockchain Nigerium for Data Sovereignty

Nigeria is keeping an eye on a new native blockchain network to protect the country’s data sovereignty.
According to local media, a team from the University of Hertfordshire has proposed the new blockchain, Nigeriato the National Information Technology Development Agency (NITDA).
Chanu Kuppuswamy, who leads the team, argued that relying on blockchain networks whose developers are located in other regions poses national security risks to the Nigerian government. He further said that Nigerium would allow the West African nation to customize the network to meet specific needs, while also promoting data sovereignty.
In his presentation, Chanu cited the recent migration of Ethereum to test of participation (PoS) consensus as an instance in which no Nigerians were involved but whose impact is far-reaching.
“Developing an indigenous blockchain like Nigerium is a significant step towards achieving data sovereignty and promoting trust in digital transactions in Nigeria,” he said.
While receiving the proposals in Abuja, NITDA’s Kashifu Abdullahi acknowledged the benefits a local blockchain would bring to Nigeria, including increased security of citizens’ data.
However, a NITDA spokesperson later clarified that Nigerium is still at the proposal stage and that the government has not yet decided whether to proceed or not.
“The committee is still discussing the possibility with stakeholders. Even if a decision is finally made, there is no guarantee that the name will be Nigerium,” the spokesperson told the media.
Nigerium’s reception in the country has been mixed. Some, like financial analyst Olumide Adesina, To say the network is “dead on arrival”. He believes the Nigerian government’s poor record in following through on its big technology plans will claim another victim. He pointed to the eNaira as a missed opportunity whose chances of success were much higher than those of Nigerium.
Others welcomed the proposal. Chimezie Chuta, who chairs the renewed The Nigerian Blockchain Policy Committee is “extremely optimistic“that Nigerium will be more successful than eNaira.
Speaking to a local news agency, Chuta stressed that eNaira failed because the central bank initiated the project on its own, without involving any stakeholders.
“They just cooked it and expected everyone to like it. [With Nigerium]there will be a lot of collaboration,” he said.
Registration of property title, digital identity and Certificate Verification are among the use cases that Nigerium is expected to initially target. However, Nigeria has already made progress in some of these fields through public blockchains.
SPPG, a leading school in governance and politics, announced in May the country’s first blockchain certificate verification system. Built on the The BSV BlockchainIt was developed in collaboration with the blockchain data recording company VX Technologies and local lender Sterling Bank.
Watch: The Future Has Already Arrived in Nigeria
Italian: https://www.youtube.com/watch?v=M40GXUUauLU width=”560″ height=”315″ frameborder=”0″ allowfullscreen=”allowfullscreen”>
New to blockchain? Check out CoinGeek Blockchain for Beginners section, the definitive guide to learn more about blockchain technology.
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Cambodian CBDC Developer to Build Palau Bond Market on Blockchain: Report

A Japanese fintech developer will build a blockchain-based bond market gateway for Palau, aiming to launch a trial in 2024 and a full launch the following year.
Japanese fintech developer Suramitsubest known for developing a central bank digital currency (CBDC) for Cambodia, is intended to build a Blockchain-gateway to the bond market based on the Pacific island nation of Palau, Nikkei He learned.
Soramitsu won the contract and plans to introduce the market on a trial basis in fiscal 2024, with a full launch scheduled for the following year, allowing the Palauan government to issue bonds to individual investors and efficiently manage principal and interest payments, according to the report.
The total cost of the project is estimated at several hundred million yen ($1.2 million to $5.6 million), less than half the cost of a non-blockchain alternative, people familiar with the matter said. The project has reportedly received support from Japan’s Ministry of Economy, Trade and Industry, with Japan’s foreign and finance ministries providing strategic and management advice on the project.
Soramitsu’s successful development of Cambodia’s CBDC in 2020 has boosted its reputation, with the digital currency’s popularity soaring, with over 10 million accounts opened by December 2023, representing 60% of Cambodia’s population. Following this, Cambodia’s central bank governor Chea Serey indicated intends to expand the reach of its CBDC internationally, particularly through collaboration with UnionPay International, the Chinese card payment service, and other global partners.
While Soramitsu’s work in Cambodia has been well received, the long-term popularity of CBDCs remains to be seen. As of late June, crypto.news reported a sharp drop in activity in India’s digital currency, the e-rupee, after local banks stopped artificially inflating its values.
According to people familiar with the matter, the Reserve Bank of India managed to hit the 1 million retail transaction milestone last December only after the metrics were artificially infiltrated by local banks, which offered incentives to retail users and paid a portion of the bank’s employees’ salaries using the digital currency.
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