Proof of Work (PoW) - News, Opinion & Analysis

Proof of Work (PoW)

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Proof of work (PoW) is the original type of consensus algorithm in a blockchain network. It was first developed in 1993 as a way to prevent denial of service attacks and others on a network. However, it wasn’t until 2009 that Satoshi Nakamoto implemented PoW on Bitcoin as an innovative way to achieve consensus in a distributed network. Since then, PoW has become a widely used consensus algorithm for many cryptocurrencies.

PoW is used to validate transactions which produces new blocks and links them together to form a blockchain. In PoW, miners compete against each other to solve complex computational puzzles. When a miner successfully solves the difficult puzzle it is verified by other miners and a new block is added to the blockchain. The transactions in the new block are thus added to the network and miners get rewarded for adding new blocks to the blockchain and securing the network.

The process of proof of work secures a blockchain network and helps to protect the network against numerous different attacks. The more miners a PoW blockchain has, the more computational hash power it has, which makes the blockchain more secure. A successful attack on a PoW blockchain would require a lot of computational power and time. Therefore, attacks on highly secure PoW blockchains can be very expensive and deemed pointless. To this day, PoW is considered to be the most secure consensus algorithm because it is the most tried and tested. 

However, PoW is not without downsides. It is very energy intensive and therefore not the most efficient consensus algorithm. Also, some experts say that PoW blockchains are more difficult to scale and that newer methods such as PoS or DPoS are required to implement various scaling solutions.

In this tag you can discover proof of work (PoW) news, cryptos, opinions and analysis created by knowledgeable individuals on the matter.

Minima - changing the game?

27 Jan 2020 2 minute read 2 comments Adam Funnell

Very occasionally, I come across something that gives me goosebumps. Something that could really change the game. It is not often, and more often than not when a new protocol comes along, we seem to be going over old ground and very little changes. P...

Byzantine Fault Tolerance

26 Jan 2020 1 minute read 0 comments piotrillo

The problem of the Byzantine generals, also called problem of interactive consistency. This refers to a problem of consistency. It is about the task of making common and precise decisions in a network. The problem can best be described with a metapho...

Reaching PegNet Community Consensus via PoW

20 Jan 2020 4 minute read 3 comments PegNet

One of PegNet’s selling points is decentralization — officially there is nobody in charge of PegNet. It works as long as the people using it agrees to play by the same rules, which at the moment is done by everyone using the same software: pegnetd. A...

Proof of Work (PoW) Vs Proof of Stake (PoS) Consensus Algorithm | An In-depth and Non-Technical Comparison

19 Jan 2020 10 minute read 0 comments CryptoSorted

The two most popular blockchain consensus algorithms -Proof of Work (PoW) and Proof of Stake (PoS). What are their basics, how do they work? Who invented them? What differentiates Pow and PoS and what do they have in common? Which one is more secure...

Proof-of-Work vs. Proof-of-Stake (what is the difference?)

17 Jan 2020 2 minute read 1 comment TrocProcLock

So each Cryptocurrency has one of two methods to verify transactions. Proof-of-Work and Proof-of-Stake. Proof-of-Work (PoW) was brought over to the money world by Hal Finney in 2004. And when Bitcoin was introduced in 2009 it was the first widely ad...

PoW will be replaced? Can PoC start a new era of mining?

13 Jan 2020 3 minute read 2 comments Diskcoin

Thanks to the consensus mechanism adopted by Bitcoin, BTC has been evaluated by many analysts as one of the most secure databases for human beings at the same time; at the same time, the high energy consumption problem caused by PoW is also increasin...

New choice for hard disk mining-DISC

7 Jan 2020 2 minute read 0 comments Diskcoin

Because of mining, BTC has created batches of wealthy people. People who know BTC are eager to participate and profit from it. This seemingly reasonable requirement has become increasingly difficult to achieve due to the development of BTC (POW). Wha...

POC - Changing Consensus with Hard disk

23 Dec 2019 5 minute read 4 comments Diskcoin

No matter how the future blockchain develops, it will never be possible to bypass the eternally unchanged level of Token. The value of Token originates from the resources consumed by mining rather than the concept of ideology. This is the current sta...

The risks and rewards of cryptocurrencies

16 Dec 2019 2 minute read 0 comments Chriss

Cryptocurrencies are with us for over 10 years, over that time we have seen some impressive growth in this field. Cryptocurrencies such as Bitcoin or Ethereum, or even some smaller contenders, can grow over 1,000% and more, in one year alone. These n...

How to tell if an altcoin has the potential to grow?

15 Dec 2019 3 minute read 6 comments Chriss

  Introduction to altcoins The word “Altcoin” is used as a name for every cryptocurrency which came after Bitcoin. So altcoins are both industry-leading coins like Ethereum, Litecoin or EOS, as well as newer, smaller cryptocurrencies. As we all know...