Proof of Stake meaning is a popular, alternative consensus mechanism to Proof of Work. Instead of needing computing power to validate transactions, validators must stake coins to increase their chances to become validators. This fact drastically reduces the energy consumption needed. Proof of Stake also improves other areas such as decentralization, security, and scalability.
The Proof of Stake consensus algorithm was originally introduced back in 2011 on the Bitcointalk forum. It was proposed as a solution to Proof of Work's problems. While they both share the same goal of reaching blockchain consensus, the process they take is quite different. Rather than needing to provide a computationally intensive proof, participants only prove they have staked coins.
How does Proof of Stake work?
Now that you know Proof of Stake meaning, let us explore how it works. The Proof Of Stake algorithm uses a pseudo-random election process to select validators from a group of nodes. The system uses a combination of factors, including staking age, an element of randomization, and the node's wealth.
In Proof of Stake systems, blocks are usually “forged” rather than “mined”. Users participating in the forging process must lock a certain amount of coins into the network as their stake. The stakes' size determines the chances for a node to be selected as the next validator - the bigger the stake, the larger the chances.
However, unique mETHods are added into the selection process to ensure that not just the wealthiest of blocks can become validators.
Randomized Block Selection
In the Randomized Block Selection mETHod, the validators are selected by looking for nodes with a combination of the lowest hash value and the highest stake. Since the sizes of stakes are public, the next forger can usually be predicted by other nodes.
Coin Age Selection
The Coin Age Selection mETHod chooses nodes based on how long their tokens have been staked. Coin age is calculated by multiplying the number of days the coins have been staked by the number of coins staked.
Once a node has forged a block, its coin age is reset to zero, and it must wait a certain period to be able to forge another block. This prevents large stake nodes from dominating the blockchain.
Advantages of Proof of Stake
Adaptability
As users' needs and blockchains change, so can Proof of Stake. It's plain to see this with the vast number of adaptations available. The mechanism is versatile and can easily fit most blockchain use cases.
Decentralization
More users are encouraged to run nodes since it's more affordable. This incentive and the randomization process also make the network more decentralized. Although staking pools exist, there is a much higher chance for an individual to forge a block under Proof of Stake successfully. Overall, this reduces the need for staking pools.
Energy efficiency
Proof of Stake is incredibly energy efficient compared to Proof of Work. The cost of participating relies on the economic cost of staking coins rather than the computational cost of solving puzzles. This mechanism leads to a significant reduction in the energy required to run the consensus mechanism.
Scalability
As Proof of Stake doesn't rely on physical machines to generate consensus, it's more scalable. There's no need for huge mining farms or sourcing large energy supplies. Adding more validators to the network is cheaper, simpler, and more accessible.
Security
Staking works as a financial motivator for the validator not to process fraudulent transactions. If the network detects a fraudulent transaction, the validator will lose a part of its stake and its right to participate in the future. So as long as the stake is higher than the reward, the validator would lose more coins than it would gain with fraudulent activity.
To effectively control the network and approve fraudulent transactions, a node would have to own a majority stake in the network, also known as the 51% attack. Depending on the value of a cryptocurrency, it can be almost impossible to gain control of the network, as you would need to acquire 51% of the circulating supply.
In Conclusion
Proof of Stake meaning is a consensus mechanism that is an upgrade from Proof of Work, and it brings about many benefits that Proof of Work does not. In this article, we hope that you have a greater understanding of Proof of Stake and how it works in the crypto space.
