Coffee with COSIMO: What is Staking and Proof of Stake?

Gráinne Clarke
3 min readApr 5, 2024

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In the second episode of Coffee with COSIMO, Jack Ward, principal at COSIMO Ventures and portfolio manager for our risk managed diversified staking fund, COSIMO Y was joined by Steve Flanagan who leads Ethereum staking efforts at Figment. The discussion centered around proof of stake and staking, exploring the intricacies of these concepts and their implications in the blockchain ecosystem.

Recap of Blockchain Fundamentals

Before delving into proof of stake, Jack provides a concise recap of blockchain fundamentals discussed in the previous episode. A blockchain serves as a secure, decentralized, and immutable digital ledger, eliminating the need for central authorities and ensuring transparent transactions across a global network of nodes. Nodes are computers being run by people that are coming to agreement on what’s happening on the network.

Exploring Proof of Stake

Steve sheds light on the essence of proof of stake (PoS). Unlike the traditional proof of work (PoW) mechanism employed by Bitcoin, PoS operates by validators putting up collateral, typically in the native asset of the blockchain, to ensure network security and validity. Validators are crucial in processing transactions and maintaining the blockchain, earning rewards for their contributions.

Participation in Blockchain Networks

Understanding blockchain participation entails two key roles: transactors and validators. Transactors add data to the blockchain through transactions, while validators, crucial in PoS systems, process and validate these transactions. This consensus mechanism ensures the integrity and security of the network, fostering trust among participants.

Transitioning from Proof of Work to Proof of Stake

The conversation shifts to the transition from PoW to PoS, with Steve highlighting the efficiency gains and environmental sustainability of PoS, pointing out how Ethereum consumes 99.9% less power as a network than Bitcoin. Unlike PoW, which consumes significant computational power, PoS achieves consensus through validators staking collateral, reducing energy consumption while maintaining network integrity.

Incentives and Penalties in Proof of Stake

Steve elaborates on the incentives and penalties within PoS networks. Validators earn rewards for their contributions primarily through block proposal rewards and consensus rewards. However, they face penalties, known as slashing, for malicious behavior or operational inefficiencies, emphasizing the importance of prioritizing network safety.

Jack clarifies the definition of blocks for the audience explaining that a block is a transaction in the chain of blocks that is being agreed upon by these validators and by this decentralized network.

Ethereum’s Unique Approach to Proof of Stake

Ethereum’s PoS mechanism introduces unique complexities, such as the requirement for validators to stake in increments of 32 ETH. This approach aims to distribute participation across multiple validators while ensuring network security and decentralization.

Financial Implications and Revenue Models

Jack talks about the revenue models of these blockchain networks in simple, traditional terms, outlining how the rewards that are being paid out to secure the network are a cost for them and then the fees that people pay equates to revenue.

An intriguing aspect of PoS networks is their financial sustainability. Ethereum, for instance, has transitioned to a profitable blockchain model, with revenue generated from transaction fees exceeding the costs of network security. This profitability, coupled with deflationary mechanisms, positions Ethereum as a robust digital economy.

Use Cases and Future Outlook

The discussion concludes with a glimpse into blockchain’s diverse use cases, ranging from financial transactions to real-world asset tokenization and gaming. As blockchain adoption continues to expand, fueled by its efficiency and trustless nature, the future holds immense potential for innovation and growth.

In essence, proof of stake and staking represent pivotal advancements in blockchain technology, driving efficiency, sustainability, scalability and even profitability. As blockchain networks evolve and diversify, understanding these concepts becomes imperative for navigating the rapidly evolving digital landscape.

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The Coffee with COSIMO series aims to demystify blockchain technology and foster greater understanding among a broader audience. We encourage you to explore upcoming topics and join future discussions.

Make sure you follow COSIMO Ventures on X and LinkedIn and keep an eye out for the upcoming episodes of Coffee with COSIMO.

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