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Coin Metrics research shows BTC and ETH are immune from 51% attacks - Crypto KingdomZ

Coin Metrics research shows BTC and ETH are immune from 51% attacks


It is no longer viable for nation-states to destroy the Bitcoin and Ethereum network via 51% attacks due to the astronomical costs required to do so, according to the latest research from crypto intelligence firm Coin Metrics. 

A 51% attacks refer to a malicious actor owning more than 51% of the mining hash rate in a proof-of-work system (such as Bitcoin) or 51% of staked crypto in a proof-of-stake network (like Ethereum). Attackers could theoretically use this power to alter the blockchain like preventing new transactions from gaining confirmations, or reverse transactions to double spend tokens for example.

Attackers could theoretically use this power to alter the blockchain, such as preventing new transactions from gaining confirmations or double-spending tokens — destroying the network completely by eroding trust. 

In a Feb. 15 report, Coin Metrics researchers Lucas Nuzzi, Kyle Water, and Matias Andrade argued that there are no longer viable ways for a nation-state attacker to continuously run an attack given the current cost of capital and operational expenses to achieve 51% control. 

The authors used a metric called “Total Cost to Attack” (TCA) to quantify exactly how much it would cost to attack a blockchain network.

The new TCA metric helped researchers quantify the cost of a 51% attack. Source: Coin Metrics

Using TCA, the report concluded that there are no profitable avenues by which to attack either the Bitcoin or Ethereum networks, nullifying the financial incentive for a nefarious attacker to do so.

“In none of the hypothesized attacks presented here [would the attacker] be able to profit by attacking Bitcoin or Ethereum,” read the report.

“Consider that even in the most profitable double spend scenario presented, where the attacker could potentially make $1B after spending $40B, that would account for a 2.5% rate of return.”

By analyzing secondary market data and real-time hash rate output, the report found a 51% attack on Bitcoin would require an actor to purchase a staggering 7 million ASIC mining rigs, which would cost somewhere around the $20 billion mark.

Noting that there simply aren’t enough ASIC rigs available on the market, the report moved to the next potential attack vector, which could be leveraged by a particularly “relentless” actor.

Assuming that a nation-state attacker was “resourceful enough” to manufacture their own mining rigs — with the Bitmain AntMiner S9 being the only “plausible” device that could be reverse-engineered for production — it would still cost north of $20 billion.

Manufacturing s9 rigs would still end up costing more than $20 billion. Source: Coin Metrics

Ethereum 34% attacks also overblown

The report also found that concerns over a potential 34% staking attack from Lido validators on Ethereum may also be misplaced.

The continued growth of Liquid Staking Derivative (LSD) providers — namely LidoDAO — has been viewed by many as a severe threat to the Ethereum network.

Related: Bitcoin devs can undo 21M supply cap but can’t force changes — Analyst

However, the report concluded it would not only be extremely time-consuming but also incredibly expensive for someone to leverage LSDs to attack the Ethereum blockchain.

“We estimate an attack on Ethereum would take 6 months due to the churn limit preventing stake from being deployed all at once,” said Nuzzi.

“That would cost over 34B USD. The attacker would have to manage over 200 nodes and spend 1M USD on AWS alone.”

It would cost at least $34 billion to mount an attack on Ethereum by way of LSDs. Source: Coin Metrics

Castle Island Ventures partner Nic Carter praised Coin Metric’s research as being “enormously important.” Carter noted that previous analyses had been largely vague or theory-driven and that this report marked the first time a rigorous and empirical analysis had been conducted.

“This is analysis that has never been possible before. This is a very significant contribution to the literature, and one that I personally have been waiting for for a long time,” wrote Carter.

Magazine: ‘Crypto is inevitable’ so we went ‘all in’ — Meet Vance Spencer, permabull



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