What is Proof-of-Stake (PoS) and Why is it Essential for Crypto?

• Updated August 10, 2026

Crypto players are exploring alternative consensus mechanisms to the original Proof-of-Work (PoW) consensus, which has been part of the crypto space since its early days. Among the most popular alternatives are the Proof-of-Stake (PoS) consensus and its variations. This guide will explain proof-of-stake, its strong points, and some of its downsides.

While cryptocurrency and all its major aspects are paperless, mining tokens is energy-intensive and requires sophisticated machinery to solve complex algorithms and confirm each transaction. In the Proof-of-Work (PoW) model, which has been in use since 2009, transactions are added to a particular blockchain network. The confirmation of transactions requires advanced computers to solve cryptographic puzzles.

This process is highly competitive, energy-intensive, and leaves behind too much carbon footprint. Against this backdrop, many blockchain networks have adopted the Proof-of-Stake model of authenticating cryptocurrency transactions and creating new tokens.

What is Proof-of-Stake (PoS)?

Proof-of-stake (PoS) is an alternative consensus mechanism used for confirming crypto transactions and is known for minimizing the computing resources required to authenticate transactions.

Thus, unlike the Proof-of-Work model, the PoS approach is more environment-friendly.

Ethereum provides the clearest example of how far Proof-of-Stake has developed. The network completed the “Merge” in September 2022, replacing Proof-of-Work with Proof-of-Stake and reducing the energy consumption associated with its consensus mechanism by more than 99%.

By 2026, staking is no longer a future part of Ethereum’s roadmap but the mechanism securing the network.

Ethereum staking has also changed since the Merge. The Pectra upgrade, activated in 2025, increased the maximum effective balance of a validator from 32 ETH to 2,048 ETH while keeping 32 ETH as the minimum required to run a validator. It also allows larger validators to consolidate stake instead of operating numerous separate 32 ETH validators.

How Proof-of-Stake Works

In crypto, a consensus mechanism is used to validate and keep entries into a database secure. Since cryptocurrency uses blockchain as its database, the consensus mechanism should secure the blockchain.

The Proof-of-Stake model embraces a simple idea: instead of mining power, the odds of creating a block and receiving the associated reward depend on the user’s stake in the system.

For instance, an individual stakeholder with X number of coins in circulation can create a new block with X probability. Users with the highest stakes in the system are the most interested in maintaining a secure network. This is because they hold the highest level of risk if the price and reputation of the cryptocurrency suffer due to attacks.

The stakeholders, also known as validators, are chosen randomly based on different factors, including the number of coins they have locked up in the blockchain network. This process of locking up crypto coins in a given blockchain network is known as crypto staking. The locked-up coins are used as collateral; each time a participant validates a transaction, they receive a reward.

Several validators must agree that a transaction is accurate, with enough nodes to verify it before it goes through. Overall, the PoS approach is more energy efficient than the PoW model.

However, the basic PoS model seems like a whale paradise to some. Yet, the modern implementations of this consensus mechanism include a rule to prevent the same staker from being chosen several times in a row, giving more chances to other participants.

The conditions to qualify as a validator vary from one project to another. In some, you have a minimum stake required; in some, you have a fixed stake. For example, Ethereum requires at least 32 ETH to run a validator.

Ethereum is also exploring deeper changes to how validators are handled. One proposal within Ethereum’s Lean roadmap would reduce the amount of permanent data stored for each validator and use zero-knowledge proofs to verify more of their activity, with the longer-term goal of supporting a much larger validator set.

Proof-of-Stake Variations

Nowadays, the PoS consensus mechanism is available in different forms. Here are five of its variations:

1. Proof-of-Stake (PoS)

The basic Proof-of-Stake is the foundation of all other variations. The original Proof-of-Stake consensus mechanism was developed in 2012. This model uses validators to generate and confirm blocks of transactions through staking. The main advantages of Proof-of-Stake are energy efficiency and lower transaction fees.

2. Pure Proof-of-Stake (PPoS)

This Proof-of-Stake variation uses randomly selected validators to verify blocks using a “selection seed” per block. The validators are chosen secretly according to the number of coins they can stake. Algorand is an example of a popular blockchain that uses the Pure Proof-of-Stake model.

3. Delegated Proof-of-Stake (DPoS)

This Proof-of-Stake variation involves delegating or electing validators according to the votes they get from stakeholders. Stakeholders on a DPoS blockchain can pass their funds on to third-party validators who can use the funds to boost the chances of generating or confirming a new block.

Stakeholders vote for the candidate they trust the most. Some of the popular blockchains using the Delegated Proof-of-Stake mechanism include EOS, TRON, and Steem, among others.

4. Hybrid Proof-of-Stake (HPoS)

The Hybrid Proof-of-Stake model embraces the main benefits of both Proof-of-work and Proof-of-Stake mechanisms. It uses miners who only generate new blocks and leave them for the validators to verify. Combining PoW and PoS blocks miners from holding all the hash power within a given network.

5. Proof-of-Validation (PoV)

The Proof-of-Validation (PoV) variation is a more secure version of the Proof-of-Stake mechanism. It allows every validator on the platform to own a copy of each completed transaction. Besides, each validator has a list of all stakeholders on the network, identified by their public key addresses. Two-thirds of the system’s validators must agree to confirm a new block.

Proof-of-Stake Advantages and Disadvantages

According to crypto and blockchain experts, Proof-of-Stake delivers more advantages than the Proof-of-Work model. It offers faster transaction speeds and more energy efficiency. With these advantages, the Proof-of-Stake model supports more scalable blockchains, making it easier for more users to join the networks.

Additionally, the Proof-of-Stake model creates opportunities to earn more crypto. It allows users to stake their crypto assets to participate in network validation and earn rewards in return.

Yet, it is generally thought to be less secure.

In summary, here are its pros and cons:

How to Make Money Staking Crypto

In the Proof-of-Stake model, the validators, also known as “stakers,” put their assets into a smart contract embedded in the blockchain. The blockchain algorithm picks validators to verify each new data block according to how many coins they have staked and other factors.

The validators that successfully confirm transactions are rewarded either with newly created coins, network fees, or both depending on the algorithm.

Validators who verify only good transactions can earn more rewards on their assets. However, validators who approve potentially fraudulent transactions that don’t conform to the network’s rules can lose some of their assets as a penalty.

But generally, staking rewards vary from one platform to another depending on the rules governing the network. The staking rewards can also change according to the number of validators involved and the size of the reward pool. Ethereum researchers are even debating whether a growing share of validator rewards should be burned as staking participation rises, showing that the economics of Proof-of-Stake can continue evolving long after a network adopts the mechanism.

How to Get Started With Staking

According to experts, crypto holders looking to earn rewards through staking can get started on various crypto exchanges instead of setting up their own nodes. This is because those platforms offer staking rewards on multiple coins, which opens up more opportunities for earning rewards. Even so, crypto owners can explore more options, such as staking-as-a-service platforms and decentralized staking protocols.

By 2026, staking is no longer limited to running a validator or locking coins through a centralized exchange. On Ethereum, users can choose between solo staking, staking-as-a-service, pooled staking, and liquid staking solutions. Pools allow users with less than the 32 ETH needed for their own validator to participate, while liquid staking can provide a token representing the staked assets that can still be used elsewhere in DeFi.

Restaking has added another layer to this market. It allows already-staked ETH to help secure additional decentralized services in exchange for potential additional rewards. However, those extra opportunities also introduce risks beyond ordinary protocol staking, including smart-contract, operator, and additional slashing risks.

Getting started on a crypto exchange is easier. After buying coins, you just need to inform the exchange of your interest to participate in its staking program. Usually, you can access it from the user interface.

All the rewards earned are deposited straight to your account according to the governing rules of the exchange.

Mainstream crypto exchanges are already offering proof-of-stake coins and staking services. In DeFi lending, users can lend assets such as stablecoins to earn a return, although the risks and mechanisms differ considerably from native blockchain staking.

Some potential risks of staking

While it offers a credible way of earning crypto, crypto staking has its share of downsides:

Proof-of-Stake Cryptocurrencies

Proof-of-Stake is now used across numerous major blockchain networks. Some notable examples include:

Cardano

ADA owners can lock up their assets on the Cardano network and earn rewards according to the size of their stakes. The ability to delegate or pledge a stake depends on the governing rules of the Cardano network.

Polkadot

Polkadot uses Nominated Proof-of-Stake (NPoS), where DOT holders can support validators through nomination rather than operating validator infrastructure themselves. The staking model continued to evolve in 2026, with a March runtime upgrade introducing a minimum 10,000 DOT self-stake for validators and enforcing a minimum validator commission of 10%.

Ethereum

The Ethereum platform has used Proof-of-Stake since the Merge in September 2022. Users who want to run their own validator need at least 32 ETH, while pooled and liquid staking services allow participation with smaller amounts.

Proof-of-Stake itself is not the end of Ethereum’s consensus development. The network’s broader roadmap continues to reconsider parts of its validator, scaling and cryptographic architecture, meaning the way Ethereum implements PoS may keep changing even though the underlying consensus transition is complete.

Conclusion

The original idea behind the Proof-of-Stake consensus mechanism is to improve scalability and reduce environmental sustainability concerns witnessed in the Proof-of-Work protocol. While the PoW mechanism is more secure and offers a competitive approach to authenticate transactions, it’s more energy intensive and raises many environmental concerns.

The Proof-of-Stake protocol aims to solve these problems by replacing computational power with staking. The network picks validators to verify transactions according to the rules of each blockchain, leading to a massive reduction in energy consumption compared with Proof-of-Work systems.

Before getting into staking, new and casual crypto investors should also consider other core metrics like market capitalization, trading history, and price mechanisms of the crypto they chose, as well as the smart-contract, slashing, liquidity, and platform risks that may come with different forms of staking.

Author

Alexander Zdravkov

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Reporter at Coindoo

Alexander Zdravkov is a market analyst and crypto journalist with interests in economics, broader financial markets and digital assets. His journey into crypto began more than four years ago, driven by a fascination with the rapid evolution of blockchain technology and the transformative potential of decentralized finance. He began analyzing market cycles and identifying emerging trends before they reach the mainstream. He holds a degree in International Relations - a background that helped shape his broader perspective on global economics, geopolitics, and the interconnected nature of modern financial markets. Whether covering the latest developments in the crypto sector or exploring broader macroeconomic themes, Alexander focuses on giving readers context rather than simply repeating headlines. During his career, he has authored more than 5,000 articles covering cryptocurrencies, traditional finance, and global market developments. His work spans everything from Bitcoin and altcoins to macroeconomic trends influencing risk assets worldwide.