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NOQ Report Is Moving to AmericaFirstReport.com

Not Every “Crypto” Is Decentralized: Proof-of-Work vs Proof-of-Stake

by David Waugh
March 23, 2022
in Opinions
Crypto

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Cryptocurrencies operate differently than the money that we are used to. Because they are solely electronic, there is no physical currency to trade. Instead, each network creates a record or “blockchain” of every transaction that takes place on the network.

There are currently two main types of mechanisms used to verify transactions on the network: Proof-of-Work (PoW) and Proof-of-Stake (PoS). While the industry was founded on PoW, many networks are moving to PoS. The MIT Technology Review dubbed PoS one of the top ten breakthrough technologies of 2022, while the European Union almost banned PoW.

Consensus Mechanisms

A “consensus mechanism” is the process of validating transactions across many nodes of the network. Consensus mechanisms are necessary for cryptocurrency networks to maintain the accuracy and validity of their blockchains, or ledgers. Since no central authority controls the ledger, a consensus of the majority of the network verifies each transaction to make sure it does not contain incorrect or fraudulent transactions.

With a centralized payment network such as PayPal or Venmo, verification is easy. A single authority controls the ledger and acts as a trusted party to verify or clear the transactions. An individual cannot “double-spend” on these networks.


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On a cryptocurrency network, however, because of the ease with which a digital currency can be reproduced without a central authority verifying transactions, an individual could attempt to sneak duplicate transactions into the blockchain before the next block is added.

Proof-of-Work

PoW was implemented in 2009 by Satoshi Nakamoto as the consensus mechanism for Bitcoin, the original cryptocurrency network. The Bitcoin network continues to operate using PoW.

So how does Proof-of-Work work? When someone wants to transfer funds from one bitcoin address to another, he announces the transaction to the network by signing it with his private key and sending it to the recipient address via its public key. The transaction is bundled with other recent transactions into a block that is added roughly every ten minutes to the Bitcoin blockchain.

The blocks are created through “mining.” For each block, Bitcoin miners (computers) compete to solve a cryptographic puzzle, using processing power, which requires a significant amount of electricity. Once the first miner solves the problem, a block of verified transactions is added to the chain, and they become part of the permanent record. In exchange for their work, the miner receives a reward in bitcoin.

Mining is “the work” in the term “Proof-of-Work.” Miners use their computing power, or “work” to “prove” the network. Because the network creates a permanent record of verified transactions, PoW eliminates the need for a central authority.

Proof-of-Stake

Proof-of-Stake emerged in 2013 as an alternative to PoW. It is used by networks such as Cardano and Solana. The Ethereum network plans to switch from PoW to PoS in the future, and its creator, Vitalik Buterin, is a major proponent of PoS as a consensus mechanism.

Whereas PoW relies on the work put in by miners to create the longest blockchain, PoS involves network participants “staking,” or locking up their crypto assets, in exchange for becoming validators of the blockchain. Validators are randomly selected by the network to verify the blockchain. PoS validators are similar to PoW miners, but instead of work, their “stake” allows them to validate the network. As Campbell Harvey states in DeFi and the Future of Finance,

Validators make themselves available by staking their cryptocurrency and then they are randomly selected to propose a block. The proposed block needs to be attested by a majority of the other validators. Validators profit by both proposing a block as well as attesting to the validity of others’ proposed blocks.

PoS uses a process of “slashing” that can be used to penalize bad actors. If a validator proposes or validates bad blocks, or is inactive on the network and doesn’t sign transactions, they can have their stake “slashed.” Slashing helps the PoS network discourage downtime and double signing, both of which are harmful to the network.

Tradeoffs Between PoW and PoS

PoS networks don’t require anywhere near the same amount of energy as a PoW network because they don’t involve thousands of specialized computers churning away simultaneously, consuming significant electricity, “working” to solve a cryptographic puzzle. The significantly lower amount of energy required by PoS to achieve consensus is viewed by many as a positive feature of the protocol. Further, because PoS networks do not require many computers “working” to achieve consensus, they potentially exhibit increased throughput, or the ability to process transactions faster.

That said, there are significant drawbacks to PoS. Cryptocurrencies are, on the whole, presented to the public as “decentralized,” but networks using PoS consensus mechanisms are drawn into a process that moves away from any meaningful decentralization. As Lyn Alden elaborates,

With a proof-of-stake system, the more coins you have, the more voting power you have, and those with the coins are also the ones earning the new coins from staking. Since they don’t need to expend resources to stake, they can simply increase their overall staking amount as they earn ongoing coins from staking rewards, and exponentially grow their influence on the network over time, forever. Network dominance tends to lead to more network dominance, in other words.

The governance of PoS networks, therefore, becomes more like that of a centralized corporation than a decentralized cryptocurrency. And with respect to monetary networks, a corporate board of unelected officials is arguably similar to the fiat system we already have.

Further, PoS networks face technical challenges that PoW networks do not. PoS algorithms involve hundreds of thousands of lines of code, while the PoW algorithm can be created with a few hundred lines of code.

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As a more concrete example, the Solana network routinely suffers from partial outages, recently for a full 48 hours, due to “excessive duplicate transactions.” This problem arises because one essentially needs a data center to run a Solana validator, which gives the network higher throughput but sacrifices decentralization and security. While networks prioritizing throughput is not inherent to PoS, PoS networks use high throughput as a way to distinguish themselves from their competitors (Solana vs. Cardano). This leads PoS networks to value throughput over decentralization and security.

The Future of Consensus Mechanisms

Current cryptocurrency adoption rates outpace early adoption rates of the internet. “Crypto” is here to stay; it will be intricately linked to the future of money and financial markets.

PoW uses more energy than PoS, but it’s battle-tested, decentralized, and secure. Policymakers seeking to ban PoW, or thinking it can be easily replaced by PoS would do well to keep the inherent and important tradeoffs between the two consensus mechanisms in mind.

Levels of decentralization and trust vary across cryptocurrency networks, and different networks serve different purposes for consumers. The choice of consensus mechanism between PoW and PoS is a key determinant of the decentralization, efficiency, and security of the cryptocurrency network.

About the Author

David Waugh joined AIER in 2020 and currently works as the Managing Editor. He is a Don Lavoie Fellow with the Mercatus Center and he previously worked as an associate for S&P Global Market Intelligence.

David is a graduate of Hampden-Sydney College where he received a BA in Economics. While at Hampden-Sydney, he was a Senior Fellow with the Center for the Study of Political Economy and worked in the Economics department as a teaching assistant.

Image by Sergei Tokmakov Terms.Law from Pixabay. Article cross-posted from AIER.



Will America-First News Outlets Make it to 2023?

Things are looking grim for conservative and populist news sites.

There’s something happening behind the scenes at several popular conservative news outlets. 2021 was bad, but 2022 is proving to be disastrous for news sites that aren’t “playing ball” with the corporate media narrative. It’s being said that advertisers are cracking down, forcing some of the biggest ad networks like Google and Yahoo to pull their inventory from conservative outlets. This has had two major effects. First, it has cooled most conservative outlets from discussing “taboo” topics like Pandemic Panic Theater, voter fraud, or The Great Reset. Second, it has isolated those ad networks that aren’t playing ball.

Certain topics are anathema for most ad networks. Speaking out against vaccines or vaccine mandates is a certain path to being demonetized. Highlighting voter fraud in the 2020 and future elections is another instant advertising death penalty. Throw in truthful stories about climate change hysteria, Critical Race Theory, and the border crisis and it’s easy to understand how difficult it is for America-First news outlets to spread the facts, share conservative opinions, and still pay the bills.

Without naming names, I have been told of several news outlets who have been forced to either consolidate with larger organizations or who have backed down on covering certain topics out of fear of being “canceled” by the ad networks. I get it. This is a business for many of us and it’s not very profitable. Those of us who do this for a living are often barely squeaking by, so loss of additional revenue can often mean being forced to make cuts. That means not being able to cover the topics properly. Its a Catch-22: Tell the truth and lose the money necessary to keep telling the truth, or avoid the truth and make enough money to survive. Those who have chosen survival simply aren’t able to spread the truth properly.

We will never avoid the truth. The Lord will provide if it is His will. Our job is simply to share the facts, spread the Gospel, and educate as many Americans as possible while exposing the forces of evil.

To those who have the means, we ask that you please donate. We have options available now, but there is no telling when those options will cancel us. We just launched a new GiveSendGo page. We also have our GivingFuel page. There have been many who have been canceled by PayPal, but for now it’s still an option. Your generosity is what keeps these sites running and allows us to get the truth to the masses. We’ve had great success in growing but we know we can do more with your assistance.

Thank you, and God Bless!

JD Rucker


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Tags: AIERCryptoTop Story
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