The Advantages and Disadvantages of Proof of Work vs Proof of Stake

The Advantages and Disadvantages of Proof of Work vs Proof of Stake

What’s the difference between proof of work and proof of stake? How do they
compare? Which one is better? Well, we don’t have all the answers, but this
article will help you understand the differences between these two methods for
reaching consensus in a cryptocurrency network, along with their relative
strengths and weaknesses. Let’s get started!

What is proof of stake?

The proof-of-stake is a type of algorithm that helps solve the challenges of
distributing public blockchains. The first cryptocurrency to use the
proof-of-stake was Peercoin in 2012. Proof-of-stake is an idea originating from
the observation that most cryptocurrencies rely on proof-of-work, which can be
tedious. A different consensus protocol has been developed, which is commonly
referred to as proof-of-stake. Proof-of-stake creates blocks in a deterministic
way depending on their wealth, hence minimizing power use. To give a concrete
example, imagine someone who chose the person who made the biggest contribution
to securing the network as a miner. This means wealth is referring to the coins
locked in a special type of node, called stake nodes. Instead of mining new
blocks as normal miners do, they simply participate in helping the blockchain
keep an accurate account of the ledger, receiving payoffs of new coins every so
often.

The Benefits Of Proof Of Work

Here are the benefits of Proof Of Work:-

  • The algorithm is easy to understand, which makes it easier for new users to
    join.

  • Users are incentivized to contribute to the security of the network through
    a process known as mining, which creates a feedback loop that provides security
    for Bitcoin in a distributed manner.

  • Unlike other cryptocurrencies, Bitcoin doesn’t require a lot of power or
    bandwidth, so miners can mine without worrying about electricity costs.

  • Miners are not geographically restricted because they can be run from
    anywhere with internet access and CPU capacity (however, they do need a wallet).

  • Mining is an incentive for people to take part in the processing of
    transactions on the blockchain, and they are rewarded with newly created
    bitcoins.

  • Mining prevents denial-of-service attacks because there’s no way someone
    could flood all nodes on the network with enough requests to disrupt the normal
    operation, making it expensive to attack the blockchain.

  • Due to bitcoin’s design, there will be less than 21 million coins, which
    makes the currency more valuable.

  • Miners overclocking is hard because the algorithm automatically adjusts the
    difficulty to ensure that blocks are mined at a rate of one every 10 minutes
    (unless bitcoins have been lost or stolen).

  • Mining prevents people from transacting bitcoins that don’t exist because
    all bitcoin transactions are recorded on a public ledger (making it impossible
    for someone to spend other people’s coins).

  • Bitcoin miners don’t have a centralized authority because they have to race
    against each other to find the next block in the chain, so it’s very difficult
    for one person to falsify records without getting caught.

The Benefits Of Proof Of Stake

  • t to censorship, because not only does it depend on nodes being online to
    confirm transactions, but every user can be an active part of the PoS, which
    means they can switch between being online and offline at any time, while still
    having their private keys.

  • If you want your blockchain to process more transactions per second than
    what PoS allows you and remain decentralized, you will need to use something
    like sharding or side chains, which would restore the benefits of Proof Of
    Stake.

  • Proof-of-Stake is much more environmentally friendly than Proof-of-Work.
    There’s no need for costly, specialized hardware that consumes vast amounts of
    power to mine PoS coins.

  • Proof-of-Stake doesn’t require any additional cost in purchasing expensive
    equipment or additional electricity which means that it can be obtained by
    everyone who has a computer.

  • Proof of stake also has a lot less volatility because there isn’t a chance
    of miners acquiring 51% control over the system. In proof of work mining, if one
    miner was able to accumulate 51% of all the hashing power they could essentially
    cause havoc on the system with what’s called a 51% attack.

  • PoS transactions confirm faster on average because each stakeholder only
    needs to sign off on their transaction instead of needing approval from other
    miners for transactions to take place.

  • PoS does not suffer from problems like double spending since every validator
    gets rewarded for creating blocks rather than just miners.

  • In a PoS system like Ethereum, the consensus among validators will be
    maintained even when nodes go offline for a period specified by the block time.

  • It is also much more cost-effective because there is no need to purchase
    expensive equipment. PoS is free since there are no extra costs.

  • It is much more resistant in two different layers or a centralized service
    running parallel to the blockchain.

Things To Consider Before Choosing A Blockchain Network

In bitcoin and other cryptocurrencies like Ethereum, proof-of-work (PoW)
involves miners verifying transactions. Their efforts are rewarded with coins.
PoW is disadvantageous because it consumes a lot of energy, is hard to scale,
and rewards participants with more computing power over those with the most
accurate information about past transactions. By limiting blocks mined per day
or month, one can limit the amount of computing power that can be used for
mining each day or month.

Final words

Proof of Work is an excellent way for cryptocurrency miners to make a living by
solving equations, which are needed to create a decentralized digital currency.
PoW prevents fraud, but only by recording all transactions on the blockchain.
Consequently, Proof-of-Work (PoW) mining is highly energy and resource
intensive, which has caused developers to develop alternative consensus models
such as proof-of-stake (PoS). Newer models use fewer resources but still possess
the same degree of security that PoW does.


Recently on our blog