In this short post I want to set out my case for the moral justifiability of 51% attacks against proof of work cryptocurrencies. In the past, a 51% attack was a theoretical construct that most people didn´t seem to think would be practically achievable or lucrative. This has now changed, as hashpower can be rented on sites like Nicehash and Mining Rig Rentals for a few hours at a time. The attack delivers the attacker two prominent opportunities:
-You can orphan blocks of ¨legitimate¨ miners. This essentially means that whatever work was produced by legitimate miners during your attack became worthless. Mine a secret chain of two hours worth of blocks, release it and you orphaned 2 hours worth of blocks by your competitors. By the time most of the miners have noticed their blocks were orphaned in an attack, their nodes will have been automatically mining on your own chain for a while and it will be too late for them to do anything about it. The amount of money they lost would be equivalent to the amount you had to spend to produce your chain. Because mining is an industry with tight margins, the economic impact on these miners can be very big. The cost may be sufficient in case of a very long attack, to persuade them to quit their endeavor and get a real job.
-The more important opportunity is that you´re able to double spend your coins. This is potentially, incredibly lucrative. How lucrative it is tends to depend primarily on the inflation rate of a cryptocurrency. A low inflation rate means relatively little ¨work¨ is done to maintain the security of the system. A high inflation rate on the other hand, turns the cryptocurrency into a very poor long-term investment. As a consequence, most cryptocurrencies face declining inflation rates, that delay the problem of their ultimately unsustainability into the future. The bank of international settlements explains this issue here
When it comes to the moral justification of a 51% attack, we first have to ask ourselves why proof of work is morally unjustifiable. There are two main reasons for this:
-Proof of work has an enormous environmental impact, that ensures future generations will have to deal with the dramatic consequences of climate change. There is no proper justification for this environmental impact, as it delivers no clear benefits over existing payment systems other than the ability to carry out morally unjustifiable actions like blackmail.
-Proof of work is fundamentally unsustainable, because of the economic burden it places on participants in cryptocurrency schemes. Cryptocurrencies can´t produce wealth out of thin air. The people who get rich from a cryptocurrency becomes rich, due to the fact that other people step in later. In this sense we´re dealing with a pyramid scheme, but the difference from regular pyramid schemes lies in the fact that huge sums of wealth are not merely redistributed, but destroyed
, to sustain the scheme. The cost of the work to sustain the scheme is bigger than you might expect, because the reality is that relatively little money has entered bitcoin. JP Morgan claims that for the crypto assets at large, a fiat amplifier of 117.5 is present, as a purported $2 billion in net inflow pushed Bitcoin’s market capitalization from $15 billion to $250 billion. You have to consider that the Digiconomist estimates that $2.6 billion dollar leaves the Bitcoin scheme on an annual basis, in the form of mining costs to sustain Bitcoin. The vast majority of retail customers who entered this scheme ended up losing money from it. In some cases this lead to suicides.
The fact that proof of work is morally unjustifiable doesn´t directly lead to a moral justification for a 51% attack. After all a sane society would use government intervention to eliminate the decentralized ponzi schemes that are cryptocurrencies. There are a few things that need to be considered however:
-Governments have so far failed in their responsibility to address the cryptocurrency schemes. Instead you tend to see officials insist that proof of work might suck and most cryptocurrency is a scam, but ¨blockchain technology¨ will somehow change the world for the better. Most libertarians who saw these schemes emerge insisted that it´s stupid to participate in them because the government would eventually ban them and round up the people who participated in them. This didn´t happen because of the logistical difficulty of suppressing these schemes (anyone with an internet connection can set one up) as well as the fact that suppressing them would lend credence to the anti-government anarcho-capitalist ideology on which these schemes are based. Goverments might say ¨these schemes facilitate crime, ruin the environment and redistribute wealth from naive individuals to scammers¨, but anarcho-capitalists would insist that governments have grown so tyrannical that they want to ban you from exchanging numbers on computers.
-Because cryptocurrency is fundamentally an online social arrangement, governments have very limited influence over the phenomenon. Binance seeks to become a stateless organization, not subject to the jurisdiction of any particular government. Just as with regular money laundering and tax evasion that hides in small nations that can earn huge sums of money by facilitating these practises, governments are dependent on the actions of individuals to address these practices. Whistleblowers released the panama papers and the tax evasion by German individuals through Swiss bank accounts. Through such individuals, the phenomenon could be properly addressed. In a similar manner, cryptocurrency schemes will need to be addressed through the actions of individuals who recognize the damage these schemes cause to the fabric of society.
-The very nature of a 51% attack means that it primarily punishes those who set up and facilitate the cryptocurrency scheme in the first place. The miners who pollute our environment to satiate their own greed are bankrupted by the fact that their blocks are orphaned. The exchange operators are bankrupted due to double-spend attacks against the scams that they facilitate. When this happens, the cryptocurrency in question should lose value, which then destroys the incentive to devote huge sums of electricity to it.
Finally, there´s the question of whether 51% attacks are viable as a response to cryptocurrency. There´s the obvious problem you run into, that the biggest and oldest scams are the most difficult to shut down. In addition, cryptocurrencies that fell victim to an attack tend to move towards a checkpoint system. However, there are a few things that need to be considered here:
-51% attacks against small cryptocurrencies might not have a huge impact, but their benefit is nonetheless apparent. Most of the new scams don´t require participants to mine, instead the new schemes generally depend on ¨staking¨. If people had not engage in 51% attacks, the environmental impact would have been even bigger now.
-51% attacks against currencies that implement checkpointing are not impossible
, if the checkpoints are decentrally produced. What happens in that case is a chain split, as long as the hostile chain is released at the right time. This would mean that different exchanges may get stuck on different forks, which would still allow people to double spend their cryptocurrency.
-There are other attacks that can be used against proof of work cryptocurrencies. The most important one is the block withholding attack. It´s possible for people who dislike a cryptocurrency to join a pool and to start mining. However, whenever the miner finds a valid solution that would produce a block, he fails to share the solution with the pool. This costs money for the pool operator, but it can be lucrative for the actor if he also operates a competing pool himself. In the best case it leads to miners moving to his pool, which then potentially allows him to execute a 51% attack against the cryptocurrency.
-It´s possible to put up a 51% attack bounty, allowing others to do the work for you. This works as following. You make transaction A : 100 bitcoin to exchange X, for a fee of 0.001 BTC. Once this transaction has been included in a block, you immediately broadcast a conflicting transaction with another node: You´ŕe sending those 100 bitcoin to your own wallet, but you´re also including a 50 bitcoin fee for the miners. The miners now have a strong incentive to disregard the valid chain and to start mining a new chain on an older block that can still include your conflicting transaction. Provided that pool operators are rational economic agents, they should grab the opportunity.
-Selfish mining in combination with a Sybil attack allows someone to eclipse the rest of the network, while controlling less than 51% of the hashrate. Your malicious nodes will simply refuse to propagante blocks of your competitors, thereby giving you more time to release your own block. Selfish mining will always be possible with 33% of the hashrate and as far as I can tell there are no pathways known currently to make the scheme impossible for people with 25% of the hashrate. This potentially makes a 51% attacks lucrative without having to carry out double-spend attacks against exchanges. Although double spending is a form of theft, it´s not clear to me whether a selfish mining attack would get you into legal trouble or not.
The dreaded 51% attack is a morally justifiable and potentially lucrative solution to the Nakamoto scheme
While Bitcoin mining and Gold mining are completely different they do have some similarities. Both are intensive process and they both are carried out mainly because of one purpose which is rewards. In gold mining man power and machines are used to extract gold from the earth. Whereas in Bitcoin mining users use special computer hardware’s to solve a computational mathematical problem. For ... Cloud mining allows you to mine cryptocurrencies like Bitcoin without having to purchase the expensive hardware required to do so. There are several legitimate cloud mining services that let users rent server space to mine for coins at a set rate. There are also some legitimate ways to invest in Bitcoin mining companies and share profits from them. Purchasing a Bitcoin Mining Rig. If you aren’t in the mood to construct your own mining rig from scratch, purchasing a pre-assembled Bitcoin mining rig is likely your best option. We recommend on heading over to CryptoCompare.com to check out what a Bitcoin mining rig will cost you these days – along with its estimated “payback period ... c) Mining Rig. To mine bitcoins is not an easy task at all! Bitcoin Miners need to be vigilant and have a very expensive computer system, to solve the cryptography problems, in the least time. The computer system, required to perform these tasks is called a mining rig. A typical, modern day mining rig, consists of the following components. — Binance (@binance) August 10, 2019. How Dusting Attacks Work. In order to understand how a dusting attack works, it is first important to understand how Bitcoin and Litecoin transactions work. Bitcoin transactions consist of inputs and outputs. The coins sitting in a wallet, which are called the inputs, are gathered together to send a transaction. There are typically a couple of outputs ... Mining bitcoin can be profitable if a miner has in-depth knowledge of the intricacies of mining before beginning. It’s best to do a cost-benefit analysis before commencing bitcoin mining. Consider the cost of a rig, the cost of power, and the ease of mining, and then weigh these against your potential profit. These should help inform your decision to mine independently or to join a mining pool. While Bitcoin mining still demands huge expenses and power inputs, which is harmful to ecology, the developers of Pi Network crypto made a huge step forward evolution in mining processes. The main idea was to create a user-friendly network, where people can form chains and mine coins with a minimal cost and limited battery drain, using a mobile application. The PI Network mobile app is user ... Mining Bitcoin may not be difficult, but it can be expensive. It is necessary to make an upfront investment before seeing any profits. In this chapter we will see all that you need and all the possibilities offered to mine Bitcoin. Bitcoin Mining Hardware. Due to the fierce competition, it is important to have very powerful hardware. Mining ... Binance Labs, the venture wing of the largest cryptocurrency exchange Binance supports new blockchain startups and cryptocurrency projects through technical assistance and direct investment. Binance describes the project as an initiative to incubate, invest, and empower blockchain and cryptocurrency entrepreneurs, projects, and communities. Bitcoin Mining Explained: How Does Bitcoin Mining Work? An excerpt from the white paper explaining the immutability of a block after the completion of PoW. Effectively, the network cannot be “rolled back” and compromised. If you’ve read our guide to mining Ethereum, it’s integral to understand that Bitcoin and Ethereum are entirely separate blockchains and entities, with their own ...
Binance announced last week that they launched Binance Lending. A new platform added to the binance website on which retail investors like you and me can lend their money to Binance, which lends ... How to Mining Bitcoin 2019 Bitcoin Mining in 2019 - Still Profitable? Best Cryptocurrency Market Binance https://www.binance.com/?ref=25992167 Litecoin Donat... Join Binance Exchange Here! https://www.binance.com/?ref=13795076 Join Kucoin Exchange Here! https://www.kucoin.com/#/?r=7chr68 Mine Bitcoin and other Crypto... Mining bitcoin using nicehash. Graphic Cards - ZOTAC GeForce GTX 1070 MINI 8GB 256-Bit GDDR5 NOTE: This is not a financial advice. Kindly do your own research before making any investment. All the ... Pre-configured cryptocurrency mining rigs continue to sell well. I explain why I believe you should build your mining rig and not simply buy one.# Referenced in Video: Pre-Built Mining Rigs are ... most profitable mining rig 2019, gpu mining, gpu mining 2019, gpu mining explained, gpu mining rig, gpu mining farm, gpu mining rig 2019, gpu mining profitability 2019, gpu mining software ... Binance cryptocurrency bitcoin NEO Ethereum Litcoin GAS LISK Bytecoin Ark Dash Monero Ripple Dogecoin Ark Verge This is not financial advice. This is my opinion. Do your own research. With any ... sign up as a member $100 bitcoin and joun one the mining pools $500 in bitcoin and you’ll start mining for life. MINE LITECOIN ON GENESIS MINING: https://www.genesis-mining.com Also, if you want to mine bitcoin for yourself, build up your bag now and watch it grow in value over the next 2 years, try out Cudo Miner below. It's free to join and they even give you 5,000 ...