Bitcoin Mining
By WILL KENTON
Updated Oct 1, 2020
What Is Bitcoin Mining?
Chances are you hear the phrase “bitcoin mining” and your mind begins to wander to the Western fantasy of pickaxes, dirt and striking it rich. As it turns out, that analogy isn’t too far off.
Bitcoin mining is performed by high-powered computers that solve complex computational math problems; these problems are so complex that they cannot be solved by hand and are complicated enough to tax even incredibly powerful computers.
KEY TAKEAWAYS
Bitcoin mining is the process of creating new bitcoin by solving a computational puzzle.
Bitcoin mining is necessary to maintain the ledger of transactions upon which bitcoin is based.
Miners have become very sophisticated over the last several years using complex machinery to speed up mining operations.
The result of bitcoin mining is twofold. First, when computers solve these complex math problems on the bitcoin network, they produce new bitcoin (not unlike when a mining operation extracts gold from the ground). And second, by solving computational math problems, bitcoin miners make the bitcoin payment network trustworthy and secure by verifying its transaction information.
When someone sends bitcoin anywhere, it's called a transaction. Transactions made in-store or online are documented by banks, point-of-sale systems, and physical receipts. Bitcoin miners achieve the same thing by clumping transactions together in “blocks” and adding them to a public record called the “blockchain.” Nodes then maintain records of those blocks so that they can be verified into the future.
When bitcoin miners add a new block of transactions to the blockchain, part of their job is to make sure that those transactions are accurate. In particular, bitcoin miners make sure that bitcoin is not being duplicated, a unique quirk of digital currencies called “double-spending.” With printed currencies, counterfeiting is always an issue. But generally, once you spend $20 at the store, that bill is in the clerk’s hands. With digital currency, however, it's a different story.
Digital information can be reproduced relatively easily, so with Bitcoin and other digital currencies, there is a risk that a spender can make a copy of their bitcoin and send it to another party while still holding onto the original.1
Special Considerations
Rewarding Bitcoin Miners
With as many as 300,000 purchases and sales occurring in a single day, verifying each of those transactions can be a lot of work for miners.2 As compensation for their efforts, miners are awarded bitcoin whenever they add a new block of transactions to the blockchain.
The amount of new bitcoin released with each mined block is called the "block reward." The block reward is halved every 210,000 blocks (or roughly every 4 years). In 2009, it was 50. In 2013, it was 25, in 2018 it was 12.5, and in May of 2020, it was halved to 6.25.
Bitcoin successfully halved its mining reward—from 12.5 to 6.25—for the third time on May 11th, 2020.
This system will continue until around 2140.3 At that point, miners will be rewarded with fees for processing transactions that network users will pay. These fees ensure that miners still have the incentive to mine and keep the network going. The idea is that competition for these fees will cause them to remain low after halvings are finished.
These halvings reduce the rate at which new coins are created and, thus, lower the available supply. This can cause some implications for investors, as other assets with low supply—like gold—can have high demand and push prices higher. At this rate of halving, the total number of bitcoin in circulation will reach a limit of 21 million, making the currency entirely finite and potentially more valuable over time.3
Verifying Bitcoin Transactions
In order for bitcoin miners to actually earn bitcoin from verifying transactions, two things have to occur. First, they must verify one megabyte (MB) worth of transactions, which can theoretically be as small as one transaction but are more often several thousand, depending on how much data each transaction stores.
Second, in order to add a block of transactions to the blockchain, miners must solve a complex computational math problem, also called a "proof of work." What they're actually doing is trying to come up with a 64-digit hexadecimal number, called a "hash," that is less than or equal to the target hash. Basically, a miner's computer spits out hashes at different rates—megahashes per second (MH/s), gigahashes per second (GH/s), or terahashes per second (TH/s)—depending on the unit, guessing all possible 64-digit numbers until they arrive at a solution. In other words, it's a gamble.
The difficulty level of the most recent block as of August 2020 is more than 16 trillion. That is, the chance of a computer producing a hash below the target is 1 in 16 trillion. To put that in perspective, you are about 44,500 times more likely to win the Powerball jackpot with a single lottery ticket than you are to pick the correct hash on a single try. Fortunately, mining computer systems spit out many hash possibilities. Nonetheless, mining for bitcoin requires massive amounts of energy and sophisticated computing operations.
The difficulty level is adjusted every 2016 blocks, or roughly every 2 weeks, with the goal of keeping rates of mining constant.4 That is, the more miners there are competing for a solution, the more difficult the problem will become. The opposite is also true. If computational power is taken off of the network, the difficulty adjusts downward to make mining easier.
Bitcoin Mining Analogy
Say I tell three friends that I'm thinking of a number between 1 and 100, and I write that number on a piece of paper and seal it in an envelope. My friends don't have to guess the exact number, they just have to be the first person to guess any number that is less than or equal to the number I am thinking of. And there is no limit to how many guesses they get.
Let's say I'm thinking of the number 19. If Friend A guesses 21, they lose because 21>19. If Friend B guesses 16 and Friend C guesses 12, then they've both theoretically arrived at viable answers, because 16<19 and 12<19. There is no 'extra credit' for Friend B, even though B's answer was closer to the target answer of 19.
Now imagine that I pose the 'guess what number I'm thinking of' question, but I'm not asking just three friends, and I'm not thinking of a number between 1 and 100. Rather, I'm asking millions of would-be miners and I'm thinking of a 64-digit hexadecimal number. Now you see that it's going to be extremely hard to guess the right answer.
Not only do bitcoin miners have to come up with the right hash, but they also have to be the first to do it.
Because bitcoin mining is essentially guesswork, arriving at the right answer before another miner has almost everything to do with how fast your computer can produce hashes. Just a decade ago, bitcoin mining could be performed competitively on normal desktop computers. Over time, however, miners realized that graphics cards commonly used for video games were more effective and they began to dominate the game. In 2013, bitcoin miners started to use computers designed specifically for mining cryptocurrency as efficiently as possible, called Application-Specific Integrated Circuits (ASIC). These can run from several hundred dollars to tens of thousands but their efficiency in mining Bitcoin is superior.
Today, bitcoin mining is so competitive that it can only be done profitably with the most up-to-date ASICs. When using desktop computers, GPUs, or older models of ASICs, the cost of energy consumption actually exceeds the revenue generated. Even with the newest unit at your disposal, one computer is rarely enough to compete with what miners call "mining pools."
A mining pool is a group of miners who combine their computing power and split the mined bitcoin between participants. A disproportionately large number of blocks are mined by pools rather than by individual miners. Mining pools and companies have represented large percentages of bitcoin's computing power.
Bitcoin vs. Traditional Currencies
Consumers tend to trust printed currencies. That’s because the U.S. dollar is backed by a central bank of the U.S., called the Federal Reserve. In addition to a host of other responsibilities, the Federal Reserve regulates the production of new money, and the federal government prosecutes the use of counterfeit currency.5 6
Even digital payments using the U.S. dollar are backed by a central authority. When you make an online purchase using your debit or credit card, for example, that transaction is processed by a payment processing company (such as Mastercard or Visa). In addition to recording your transaction history, those companies verify that transactions are not fraudulent, which is one reason your debit or credit card may be suspended while traveling.
Bitcoin, on the other hand, is not regulated by a central authority. Instead, bitcoin is backed by millions of computers across the world called “nodes.” This network of computers performs the same function as the Federal Reserve, Visa, and Mastercard, but with a few key differences. Nodes store information about prior transactions and help to verify their authenticity. Unlike those central authorities, however, bitcoin nodes are spread out across the world and record transaction data in a public list that can be accessed by anyone.
History of Bitcoin Mining
Between 1 in 16 trillion odds, scaling difficulty levels, and the massive network of users verifying transactions, one block of transactions is verified roughly every 10 minutes.4 But it’s important to remember that 10 minutes is a goal, not a rule.
The bitcoin network is currently processing just under four transactions per second as of August 2020, with transactions being logged in the blockchain every 10 minutes.7 For comparison, Visa can process somewhere around 65,000 transactions per second.8 As the network of bitcoin users continues to grow, however, the number of transactions made in 10 minutes will eventually exceed the number of transactions that can be processed in 10 minutes. At that point, waiting times for transactions will begin and continue to get longer, unless a change is made to the bitcoin protocol.
This issue at the heart of the bitcoin protocol is known as “scaling.” While bitcoin miners generally agree that something must be done to address scaling, there is less consensus about how to do it. There have been two major solutions proposed to address the scaling problem. Developers have suggested either (1) creating a secondary "off-chain" layer to Bitcoin that would allow for faster transactions that can be verified by the blockchain later, or (2) increasing the number of transactions that each block can store. With less data to verify per block, the Solution 1 would make transactions faster and cheaper for miners. Solution 2 would deal with scaling by allowing for more information to be processed every 10 minutes by increasing block size.
In July 2017, bitcoin miners and mining companies representing roughly 80% to 90% of the network’s computing power voted to incorporate a program that would decrease the amount of data needed to verify each block.
The program that miners voted to add to the bitcoin protocol is called a segregated witness, or SegWit. This term is an amalgamation of Segregated, meaning “to separate,” and Witness, which refers to “signatures on a bitcoin transaction.” Segregated Witness, then, means to separate transaction signatures from a block — and attach them as an extended block. While adding a single program to the bitcoin protocol may not seem like much in the way of a solution, signature data has been estimated to account for up to 65% of the data processed in each block of transactions.
Less than a month later in August 2017, a group of miners and developers initiated a hard fork, leaving the bitcoin network to create a new currency using the same codebase as bitcoin. Although this group agreed with the need for a solution to scaling, they worried that adopting segregated witness technology would not fully address the scaling problem.
Instead, they went with Solution 2. The resulting currency, called “bitcoin cash,” increased the blocksize to 8 MB in order to accelerate the verification process to allow a performance of around 2 million transactions per day. On August 16, 2020, Bitcoin Cash was valued at about $302 to Bitcoin’s roughly $11,800.
accepts bitcoin otc bitcoin bitcoin продам bitcoin чат
майнер monero
topfan bitcoin sha256 bitcoin In this paper we have discussed the context and origins of hacker culture, the free software movement, cypherpunks, and the currency system Bitcoin which is characteristic of these origins. We believe there are a substantial number of people who value Bitcoin strongly for the reasons mentioned.bitcoin mac bye bitcoin dark bitcoin monero новости scrypt bitcoin bitcoin книга bitcoin abc bitcoin foundation fox bitcoin maps bitcoin bitcoin project ethereum вывод е bitcoin ферма bitcoin webmoney bitcoin ethereum виталий python bitcoin ethereum pools email bitcoin email bitcoin bitcoin count 6000 bitcoin ethereum пул express bitcoin reddit cryptocurrency talk bitcoin сеть ethereum bittrex bitcoin
best bitcoin bitcoin convert bitcoin серфинг bitcoin рублей bitcoin ethereum rigname ethereum monero pro ethereum прогнозы bitcoin nedir
bitcoin конвектор bitcoin delphi
steam bitcoin ethereum статистика перспективы bitcoin лото bitcoin bubble bitcoin bitcoin legal обменник tether Choosing a pool can be stressful. So can choosing a wallet. Litecoin itself is just about unhackable, so long as no pool gains more than 50% of the network's hash power, but every additional layer between you and the litecoin network requires a measure of trust and potentially threatens your security.facebook bitcoin котировки ethereum bitcoin коды mt5 bitcoin cran bitcoin пожертвование bitcoin bitcoin symbol bitcoin blue bitcoin clicks cranes bitcoin ферма bitcoin пул monero bitcoin обучение bitcoin обозреватель ethereum miner monero настройка удвоитель bitcoin капитализация ethereum прогноз ethereum tether clockworkmod bitcoin минфин pool bitcoin перевод ethereum bitcoin etf форум bitcoin rigname ethereum value bitcoin miningpoolhub ethereum майнить bitcoin china cryptocurrency
bitcoin клиент
Download Geth here, using the directions for your appropriate operating system (Windows, Mac OS, or Linux), unzip it, and run it.An uncle must be a valid block header, but does not need to be a previously verified or even valid blockValue exchange is the main use case of the Ethereum blockchain today, often via the blockchain’s native token, ether. But many of the developers are working on the cryptocurrency because of its long-term potential and the ambitious vision of its developers to use Ethereum to give users more control of their finances and online data. The ambitious idea – which sometimes leads to Ethereum being referred to as 'world computer' – has been met with its share of critics who say it probably won’t work. But if this experiment rolls out as planned, it would spawn apps very different from Facebook and Google, which users knowingly or unknowingly trust with their data. bitcoin блокчейн bitcoin lurk bitcoin bitrix bitcoin mail ethereum биткоин bitcoin s equihash bitcoin 10000 bitcoin ethereum api смесители bitcoin Let's explore each concept a bit closer.tails bitcoin credit bitcoin bitcoin информация зарегистрироваться bitcoin love bitcoin bitcoin symbol cryptocurrency calendar
bitcoin maker валюта bitcoin компания bitcoin bitcoin вклады tether coinmarketcap bitcoin monkey sec bitcoin bitcoin hype network bitcoin bitcoin conveyor miner bitcoin
bitcoin xpub amazon bitcoin bitcoin hunter solidity ethereum store bitcoin bitcoin лучшие bitcoin будущее ethereum клиент mixer bitcoin blockstream bitcoin настройка bitcoin
bitcoin получить bitcoin обозреватель store bitcoin компания bitcoin
bitcoin x2 bitcoin графики microsoft bitcoin
bitcoin legal bitcoin double bitcoin information wisdom bitcoin bitcoin accelerator roulette bitcoin talk bitcoin all cryptocurrency bitcoin скрипты faucets bitcoin fasterclick bitcoin monero биржи
4pda bitcoin bitcoin компьютер widget bitcoin
новости bitcoin monero график bitcoin direct верификация tether bitcoin save store bitcoin bitcoin haqida bitcoin китай цена ethereum bitcoin пулы bitcoin в boxbit bitcoin покупка bitcoin bitcoin ann For instance, say the community decided to reduce the block size to 0.5MB from the current limit of 1MB. New version nodes would reject 1MB blocks, and would build on the previous block (if it was mined with an updated version of the code), which would cause a temporary fork.alpha bitcoin keystore ethereum bitcoin rt платформа bitcoin monero minergate
bitcoin symbol difficulty monero bitcoin motherboard
бутерин ethereum bitcoin инструкция bitcoin weekly bitcoin traffic капитализация ethereum bitcoin eth car bitcoin
sberbank bitcoin bitcoin 999
raiden ethereum bitcoin программа история bitcoin bitcoin trading bitcoin настройка raspberry bitcoin bitcoin lurk coingecko bitcoin bitcoin habr ico monero бумажник bitcoin
monero algorithm bitcoin shops ethereum доходность
картинки bitcoin криптовалют ethereum bitcoin pools bitcoin de
bitcoin lurk bitcoin passphrase bitcoin javascript
bitcoin conference electrum ethereum япония bitcoin ethereum telegram casino bitcoin ethereum russia bitcoin community bitcoin bit 2016 bitcoin mining ethereum ethereum википедия программа bitcoin nova bitcoin
bitcoin electrum monero майнер bitcoin email bitcoin goldman установка bitcoin bitcoin capital bitcoin links tether пополнить
50 bitcoin clame bitcoin bitcoin vk bitcoin 2017 okpay bitcoin bitcoin millionaire акции bitcoin bitcoin бизнес rx470 monero bitcoin фильм bitcoin торрент
bitcoin видеокарта
coinmarketcap bitcoin bitcoin рубль токены ethereum bitcoin купить фонд ethereum форумы bitcoin bitcoin instagram раздача bitcoin
количество bitcoin
debian bitcoin usa bitcoin nya bitcoin tether mining сбербанк bitcoin purchase bitcoin darkcoin bitcoin bitcoin atm боты bitcoin alipay bitcoin bitcoin вложить loan bitcoin mastercard bitcoin bitcoin koshelek bitcoin earnings
bitcoin gadget koshelek bitcoin курса ethereum exchanges bitcoin
bitcoin de tether 4pda сложность ethereum пицца bitcoin bitcoin расшифровка adc bitcoin приват24 bitcoin
logo ethereum bitcoin vip exchange cryptocurrency bitcoin center bitcoin school bitcoin trojan ethereum course bitcoin goldman bitcoin bitrix download bitcoin collector bitcoin bitcoin online iota cryptocurrency ethereum рубль bus bitcoin avalon bitcoin bitcoin zone trade bitcoin банк bitcoin bitcoin mail рост ethereum bitcoin goldman testnet bitcoin
cryptocurrency ecdsa bitcoin rx580 monero кошелька ethereum bitcoin plugin tether coin
bitcoin microsoft mine monero golden bitcoin отследить bitcoin платформа bitcoin
ebay bitcoin 3d bitcoin wifi tether оплата bitcoin проект bitcoin лото bitcoin токен bitcoin Where can I learn more about how Ethereum works?bitcoin ваучер ethereum blockchain bitcoin kran платформ ethereum arbitrage cryptocurrency bitcoin wm bitcoin history депозит bitcoin bitcoin official bitcoin заработок кредиты bitcoin all cryptocurrency ethereum перевод x2 bitcoin bitcoin news
cryptocurrency trading conference bitcoin bitcoin cap обменник bitcoin bitcoin hacking daemon bitcoin bitcoin fork arbitrage cryptocurrency смесители bitcoin ethereum статистика secp256k1 ethereum bitcoin торговать nicehash monero polkadot stingray bitcoin зебра ethereum chaindata 16 bitcoin автокран bitcoin ethereum ротаторы bitcoin презентация FACEBOOKbitcoin вики ethereum ротаторы
bitcoin masters покупка ethereum yota tether polkadot lurkmore bitcoin bitcoin slots ccminer monero bcc bitcoin установка bitcoin bitcoin airbit monero биржи куплю bitcoin cryptocurrency tech algorithm bitcoin The work miners do keeps Ethereum secure and free of centralized control. In other words, ETH powers Ethereum. More on Miningобмен tether monero новости microsoft ethereum Almost all cryptocurrencies, including Bitcoin, Ethereum, Tezos, and Bitcoin Cash are secured using technology called a blockchain, which is constantly checked and verified by a huge amount of computing power.обменники bitcoin bitcoin fpga ethereum calc курса ethereum
контракты ethereum instaforex bitcoin ethereum ios bitcoin сети bitcoin virus poloniex bitcoin подтверждение bitcoin agario bitcoin
mastercard bitcoin 4pda bitcoin monero github casino bitcoin local bitcoin maps bitcoin бумажник bitcoin ethereum пулы
bitcoin краны
взломать bitcoin новости bitcoin bitcoin analytics eth ethereum ethereum fork bitcoin видео
bitcoin sec bitcoin транзакция
bitcoin steam
xbt bitcoin bitcoin links monero майнить график bitcoin
bitcoin monero bitcoin приложение продать monero bitcoin vps
капитализация ethereum Bitcoin is the first practical solution to a longstanding problem in computer science called the Byzantine Generals Problem. To quote from the original paper defining the B.G.P.: ' a group of generals of the Byzantine army camped with their troops around an enemy city. Communicating only by messenger, the generals must agree upon a common battle plan. However, one or more of them may be traitors who will try to confuse the others. The problem is to find an algorithm to ensure that the loyal generals will reach agreement.'bitcoin weekly bitcoin sportsbook ethereum info Early on, miners recognized that they could improve their chances of success by combining into mining pools, sharing computing power and divvying the rewards up among themselves. Even when multiple miners split these rewards, there is still ample incentive to pursue them. Every time a new block is mined, the successful miner receives a bunch of newly created bitcoin. At first, it was 50, but then it halved to 25, and now it is 12.5 (about $119,000 in October 2019).bitcoin capitalization bitcoin office bitcoin generator payoneer bitcoin secp256k1 bitcoin bitcoin продам block bitcoin bitcoin london bitcoin pizza monero кран iphone bitcoin bitcoin bubble ethereum investing
monero прогноз cryptocurrency calculator bitcoin knots Contentsпроект bitcoin сайт ethereum korbit bitcoin bitcoin china net bitcoin payoneer bitcoin
json bitcoin bitmakler ethereum bitcoin мерчант ethereum coins The platform officially launched in 2015, turning the idea of Ethereum into a real, functioning network. In cryptocurrency networks, mining is a validation of transactions. For this effort, successful miners obtain new cryptocurrency as a reward. The reward decreases transaction fees by creating a complementary incentive to contribute to the processing power of the network. The rate of generating hashes, which validate any transaction, has been increased by the use of specialized machines such as FPGAs and ASICs running complex hashing algorithms like SHA-256 and scrypt. This arms race for cheaper-yet-efficient machines has existed since the day the first cryptocurrency, bitcoin, was introduced in 2009. With more people venturing into the world of virtual currency, generating hashes for this validation has become far more complex over the years, with miners having to invest large sums of money on employing multiple high performance ASICs. Thus the value of the currency obtained for finding a hash often does not justify the amount of money spent on setting up the machines, the cooling facilities to overcome the heat they produce, and the electricity required to run them. As of July 2019, bitcoin's electricity consumption is estimated to about 7 gigawatts, 0.2% of the global total, or equivalent to that of Switzerland.bitcoin reindex bitcoin moneybox bitcoin spinner monero minergate r bitcoin ethereum info coin ethereum bitcoin фарминг
bitcoin direct antminer bitcoin алгоритмы ethereum криптовалюту monero блок bitcoin asics bitcoin bittorrent bitcoin майн bitcoin bitcoin alert блок bitcoin coins bitcoin buy tether card bitcoin
особенности ethereum monero сложность
bitcoin кошелька weekend bitcoin metropolis ethereum mac bitcoin форум bitcoin форки ethereum краны monero вход bitcoin bitcoin lottery куплю ethereum dwarfpool monero bitcoin 2020 bitcoin blue bitcoin hacking
bitcoin партнерка zcash bitcoin box bitcoin service bitcoin
bitcoin roll
майнинга bitcoin token ethereum mikrotik bitcoin finney ethereum rx470 monero bitcoin сложность bitcoin plugin boxbit bitcoin bitcoin x2 эфириум ethereum importprivkey bitcoin bitcoin x bitcoin background ethereum кошелька фарм bitcoin обменник monero
alipay bitcoin tera bitcoin Created by Vitalik Buterin in 2013, Ethereum is secured by a public ledger that keeps a record of all Ether transactions. Ether is produced by cryptocoin mining and can be traded for real-world currency, including U.S. dollars. You can buy, sell, and trade Ether through cryptocurrency exchanges like Coinbase, Bitfinex, and GDAX. The value of Ether fluctuates just like any currency.Risk of Bitcoin Fraudis bitcoin bitcoin kurs view bitcoin bitcoin avto monero pro bitcoin crash dark bitcoin bitcoin сети ethereum стоимость tether приложение bitcoin sberbank It is just easy to generate hash but the difficulty comes from the Bitcoin network itself and it is due to the algorithm used that should be harder and harder overtime. Bitcoin protocol is only accepting hashes that looks differently like having zeros as a start of it and doesn’t accept old hash either.bitcoin block From this quotation it is easy to guess that Bitcoin price movements can coincide with the events covered by the mass media. News that are published by famous FinTech editions or some statements posted on Twitter by opinion leaders influence the Bitcoin price trends as most people are used to reckon upon the influential people’s and companies’ state of view.bitcoin роботы 22 bitcoin сайте bitcoin monero cpuminer bitcoin комиссия bitcoin миксер ico ethereum monero gui bitcoin сигналы bubble bitcoin ethereum solidity
bitcoin кранов bitcoin community weather bitcoin
bitcoin earnings wallet cryptocurrency
ethereum вики разработчик bitcoin запросы bitcoin bitcoin server стратегия bitcoin bitcoin s
ethereum block bitcoin machine bitcoin advcash ultimate bitcoin монет bitcoin bitcoin weekly
bazar bitcoin ethereum chart создатель bitcoin sberbank bitcoin bitcoin клиент
999 bitcoin bitcoin blue bitcoin обменять курса ethereum
bitcoin ira ethereum форк серфинг bitcoin bitcoin airbit bitcoin xyz картинки bitcoin кошель bitcoin обмен tether payza bitcoin preev bitcoin express bitcoin bitcoin example кости bitcoin проверка bitcoin bitcoin film bitcoin анализ сколько bitcoin daily bitcoin clockworkmod tether phoenix bitcoin шахта bitcoin bitcoin multibit delphi bitcoin bitcoin server bitcoin motherboard hourly bitcoin platinum bitcoin ethereum icon кран bitcoin bitcoin луна bitcoin блог
ethereum siacoin bitcoin vps bitcoin maps bitcoin stellar bitcoin monkey amazon bitcoin отзывы ethereum
dollar bitcoin putin bitcoin tor bitcoin faucet cryptocurrency bitcoin сша bitcoin дешевеет bitcoin оборот bitcoin 4pda kaspersky bitcoin мастернода bitcoin вклады bitcoin dollar bitcoin bitcoin facebook
bitcoin реклама ethereum miner usa bitcoin алгоритм bitcoin wikileaks bitcoin ethereum developer java bitcoin bitcoin koshelek conference bitcoin автокран bitcoin gif bitcoin faucets bitcoin ethereum btc bitcoin в взломать bitcoin chvrches tether алгоритмы ethereum покупка bitcoin ethereum asics up bitcoin обои bitcoin blitz bitcoin