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Monero’s [XMR] hashrate drop by over 70% slightly increases ‘risk of a 51% attack’

Priya

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Monero's [XMR] hashrate drops by over 70%, slightly increases 'risk of a 51% attack'
Source: Unsplash

Earlier this week, Binance Research released a report on the implications of the Monero hard fork, which occurred on March 9. On one hand, the research provided a detailed report on the privacy and security update that went live during the upgrade, on the other hand, the report concentrated on ASIC miners and the possible outcomes of the hard fork.

Initially, the hard fork was set to take place later in April, however, it was advanced due to rising concerns of centralization because of the increasing number of ASIC miners on the network. To achieve this, the team changed its Proof-of-Work [PoW] algorithm from CryptoNight V8 to CryptoNight-R.

The report stated that this hard fork had three sub-consequences on the miners using ASIC mining equipment. The first sub-consequence was that there was a sudden drop in the hashrate. According to the report, Monero’s hashrate plummeted by “roughly 70%” between March 8 and March 10, “validating previous pre-fork estimates about the heavy contribution rate of ASICs to Monero’s total network hashrate”.

Source: Binance Research

Source: Binance Research

The second sub-consequence was that it resulted in an increase in block profitability. The report claimed that the profitability per block witnessed a significant increase of over 200%, a direct result of a decrease in the difficulty of mining a block. It further stated that the network’s mining difficulty, on “an average” had decreased by over 70%, which was in accordance with the fall in hash rate.

The report read:

“Meaning that the same CPU or GPU card on average could produce nearly 3 times as many Monero post-fork, on average […] so removing their contributions to the network means that the average variable cost of mining on Monero is much higher using general purpose units […]Lowering network difficulty also offers a more even playing field […]”

Source: Binance Research

Source: Binance Research

The next prominent sub-consequence was the block time, which increased from an average of 2 minutes to over 10 minutes, as of March 10. The reason for this was that the mining difficulty was not mathematically designed to adjust instantly, even though ASIC miners were excluded almost immediately after the hard fork. The report further added:

“As a consequence, fewer miners were competing for blocks with pre-fork difficulty levels that assumed higher network aggregate hashrates, leading to longer block times […] It took roughly 36 hours for the average block-time to return to the normal average of two minutes per block.”

Source: Binance Research

Source: Binance Research

More so, the report presented two outcomes of this hard fork; mining remained “fairly unprofitably” for household miners and the drop in the hashrate could have resulted in a “higher probability of a 51 percent attack”.

The first outcome revealed that the “month-on-month in absolute USD terms is fairly low” irrespective of the increase in the profitability and the decrease of difficulty. The report said,

“In comparison, the April 2018 fork (“Fork 1”) had a larger impact in mining profitability, as the price of Monero was more than 3 times higher than XMR price in March 2019, resulting in a much wider magnitude in USD-denominated mining profitability in the aftermath of the two forks.”

Source: Binance Research

Source: Binance Research

The second outcome suggested that there was “a slightly higher risk” of a 51 percent attack on the Monero network, a result of over 70 percent drop in its hash rate. The report stated,



“In general, ASIC miners may lead to centralization of the mining activities behind any PoW asset, but their absence also exposes a greater tail risk for the network. Achieving “ASIC resistance” remains a cat and mouse game and there is a trade-off between staving off centralization and boosting mining participation rate.”

Smooth_xmr, an XMR core team member, said on Reddit:

“The 51% attack statement is just entirely wrong. You can’t meaningfully compare hash rates across different algorithms. Considering only the hash rates, it is possible the network got more secure, less secure, or stayed about the same.”

Jonaemahina, a Redditor, said:

Source: Reddit

Source: Reddit





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Priya is a full-time member of the reporting team at AMBCrypto. She is a finance major with one year of writing experience. She has not held any value in Bitcoin or other currencies.

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Tether’s [USDT] market capitalization hits all-time high, Facebook in talks with Winklevoss twins, trading firms over new cryptocurrency and more

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Tether’s [USDT] market capitalization hits all-time high, Facebook in talks with Winklevoss twins, trading firms over new cryptocurrency and more

Daily Crypto News – May 25

1) Bitcoin Wallet receives part of 5,000 BTC: A recent Whale Alert highlighted a transaction on May 24, where a large sum of Bitcoin [BTC] exchanged hands between two anonymous wallets. According to the alert the transaction took place at 22:13:23 + 1 minutes and 5,000.00001092 BTC was transferred from an unknown wallet, with address 19SiCYaYKZh9A8HUjuh14eg5wtYzKxiFbB, to another unknown wallet with address 14GcjGjxwadzcpmq9EG3KUgTKATjurbnWt.

Read more at https://bit.ly/2VRQwb0

2) Bitwise Report 2.0: Bitcoin [BTC] futures continues growth: On a month-on-month basis, Bitcoin Futures saw a massive bump in April trading at an average of 10,000 contracts daily, peaking on April 4, with over 22,000 contracts traded. To put that number in perspective, in March 2019, the average contracts traded was less than 4,000. Despite the high standards set in April, the average daily contracts traded in May, with 25 days gone has exceeded 14,000 and still looks to grow, given the price performance of Bitcoin.

Read more at https://bit.ly/2W40sTR

3) Craig Wright on private keys: Craig S Wright has, for years, claimed he is the true creator of Bitcoin [BTC] without providing a shred of evidence to support the same. With the crypto-community levelling, Wright could prove his worth by sending BTC from Satoshi Nakamoto’s touted wallet containing around 980,000 BTCs, the BSV man in a twisted cause and effect situation, stated he will “sign” into his wallet only when he proves he is the creator.

Read more at https://bit.ly/2X6fdlw

4) Tether’s [USDT] market cap hits ATH: Tether and Bitfinex are being closely scrutinized now more than ever due to the NYAG’s lawsuit; however, the scrutiny doesn’t seem to have affected Tether as the market cap of USDT has increased by over $100 million in approximately 70 days.

Read more at https://bit.ly/2McaTjE

5) Tether volume shift: Another controversial topic in the cryptocurrency industry was the issue of fake transaction volumes on many of the popular cryptocurrency exchanges. The magnitude of the topic was so large that even Changpeng Zhao, the Chief Executive Officer [CEO] of Binance had raised red flags. This topic and Tether as a whole received another twist when Larry Cermack, the Director of Research at The Block, pointed out a few parameters when it came to the said volume.

Read more at https://bit.ly/2wmk4mJ

6) Bitfinex’s LEO tokens listed on Delta Exchange: Bitfinex’s Leo tokens faced quite a lot of criticism when they were announced, due to the missing $850 million funds from Bitfinex. The private investment round by Bitfinex also faced a lot of heat from the media. However, in a recent development, Leo tokens are being listed on various exchanges for trading.

Read more at https://bit.ly/2HUEnNB



7) Robinhood en-route a projected valuation of $7 billion: Robinhood, the California-based cryptocurrency exchange made headlines recently when a source close to the organization revealed that it was on the verge of closing their latest round of funding at a valuation of a whopping $7 billion – $8 billion. Sources even claimed that the current round of funding could act as a precursor to an even bigger round of funding, which would pit Robinhood with the bigwigs like Coinbase and Binance.

Read more at https://bit.ly/2W64KKj





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