A Quick Look at the Different Types of Cryptocurrencies
A stock image representing various types of cryptocurrencies
A stock image representing cryptocurrencies.
You may be wondering what types of cryptocurrencies are out there. You’ve likely heard of a few, such as Bitcoin (BTC), Dash (DASH), and Monero (XMR). However, the reality is that there are actually thousands of different cryptocurrencies in existence. Coinmarketcap.com reports that there are 7,433 cryptocurrencies as of Oct. 16, 2020, and the global crypto market is worth more than $356 billion.
The current values of cryptocurrencies vary greatly and fluctuate daily. For example, yearn.finance (YFI) is worth $14,134.78 per unit and Bitcoin is worth $11,363.07 per unit. BitTorrent (BTT) and Dogecoin (DOGE) are worth just $0.000339 and $0.002572 per unit.
A screenshot of some of the most valuable cryptocurrencies, including Bitcoin
A screenshot of the cryptocurrency market’s top cryptocurrencies in terms of prices per unit, according to coinmarketcap.com.
Why Is Crypto Mining Such a Big Deal?
People love being able to use money digitally. Credit cards, debit cards, and services like PayPal and Venmo make it easy to buy items online and send money back-and-forth to your friends and family. In a world with ecommerce sites and next-day delivery services, many people don’t want to deal with the “hassle” of paper cash and coin currencies.
But what leads people to engage in crypto mining? There isn’t a one-size-fits-all response to that question. After all, people have different needs, interests and goals. We’ll explore just a few of them here now…
1. People Seek Greater Privacy and Control of Their Finances
Not everyone is as trusting of the existing systems. And some would prefer to have greater control — and privacy — when it comes to their finances. The idea here is that Uncle Sam doesn’t need to know when you purchase underwear or how much you spent on that new surround-sound audio system.
To avoid being a part of the traditional centralized banking system, some people keep money under their mattresses or rolled up in old coffee cans in their pantries. But there’s another way that people can keep their money out of the traditional centralized banking system: by mining for and using cryptocurrencies.
Cryptocurrencies such as Bitcoin, Dash, Ethereum and Monero offer a certain level of anonymity to users. Why? Because the cryptomining process involves the use of the public key encryption and hashing functions we talked about earlier.
2. It’s All About the Benjamins
Data from Coherent Market Insights indicates that the global cryptocurrency mining market is expected to surpass $38 billion by 2025.
A screenshot of the coinbase.com Bitcoin trading dashboard
A screenshot of the coinbase.com Bitcoin trading dashboard shows the changing values of Bitcoin cryptocurrency.
A screenshot of the coinbase.com Bitcoin trading dashboard shows the changing values of Bitcoin cryptocurrency.
And for some, crypto mining can be incredibly profitable and is thought to be a good investment. But for many users, this often isn’t the case because there are a lot of resources that go into mining them and often not a high return.
Some cryptocurrencies, such as Bitcoin, are worth a lot of money when you cash them in. Part of this is because they’re limited in terms of supply, maxing out at a total of 21,000,000, and there are already 18,512,200 BTC that have been mined.
And people have the option of buying and selling fractions of Bitcoins, which are known as Satoshi. There are 100,000,000 Satoshi per BTC.
3. Crypto Is Still New, Exciting and “Shiny”
Let’s face it: There are people out there who want to ride the newest technology waves to be a part of the experience. Essentially, they want to be a part of the next best thing. But how many people are involved in crypto mining? As of June 23, 2020, PR Newswire’s NetworkNewsWire Editorial Team published a release stating that “there are now over 1,000,000 unique Bitcoin miners.”
And to think, that number is just for the people who are mining Bitcoin specifically!
If Cryptocurrency Mining Is So Simple, Why Doesn’t Everyone Do It?
While everyone might want to take advantage of crypto mining, the fact is that it’s not for everyone.
1. Crypto Mining Is Resource-Intensive
For one, cryptocurrency mining nowadays requires a lot of resources both in terms of computing power and electricity. Why? Because crypto mining requires a lot of computing power to generate new guesses continually. If you’re successful, then not only do you generate new Bitcoin, but you also get to update the blockchain by adding information to the end of the ledger.
2. Crypto Mining Is Expensive
Not only do you have to worry about having enough processing power and electricity to power your operation, but you also need to keep in mind the costs associated with such a massive initiative. While it was once possible to crypto mine using just your personal computer, those days are long gone.
If you want to have even a slight chance of beating other cryptocurrency miners to the punch, then you need to have the tech and processing capacity to compete at their level. This means having more devices and access to less expensive power.
3. The ROI Ain’t What It Used to Be
While it’s true that some people have been able to make money by mining cryptocurrencies, the same can’t be said for everyone. And the more that time goes on and the more people that get involved, the decreasing return on investment that crypto miners could expect to receive.
Let’s consider Bitcoin as an example. Approximately every four years (or ever 210,000 blocks mined), Bitcoin experiences an event known as a halving. What this means is that the number of Bitcoins that people would receive as a reward for every blockchain block mined would reduce by half. So, when people first started mining Bitcoins back in 2009, they’d receive 50 BTCs per block. As of the last halving, which took place on May 11, 2020, that rate has since reduced to 6.25 BTC per block.
Here’s a breakdown of how the halving events have reduced the numbers of BTCs you could expect to receive as a miner:
Year BTC Received Per Block Event
2009 50 BTC (Original BTC Mining Rate)
2013 25 BTC First Halving Event
2016 12.5 BTC Second Halving Event
2020 6.25 Third Halving Event
4. It’s Not Feasible (Or It’s Prohibited) In Your Geographic Location
We mentioned earlier that while cryptocurrency mining isn’t illegal in some areas, in some places it is. As we mentioned earlier, governments globally have different viewpoints of cryptocurrencies in terms of crypto mining. Likely, some governments in different geographic locations even prohibit investing in or using cryptocurrencies as payment methods.
Final Thoughts on Cryptocurrency Mining
Cryptocurrency mining is an interesting alternative to the traditional centralized systems that currently operate throughout the world. However, it’s very taxing in terms of computer and power resources and isn’t feasible for many users as a result.
ethereum eth tether provisioning bitcoin отслеживание bitcoin earning криптовалюты bitcoin ethereum core ethereum конвертер карты bitcoin
txid bitcoin
bitcoin автокран bitcoin converter фото bitcoin bitcoin matrix bitcoin кранов bitcoin счет краны monero bitcoin анализ bitcoin reklama hardware bitcoin bitcoin список
скачать bitcoin dwarfpool monero bitcoin фирмы bitcoin fan bitcoin javascript bitcoin отслеживание ethereum логотип мастернода ethereum trezor bitcoin виталий ethereum bitcoin weekly bitcoin информация monero bitcointalk enterprise ethereum bitcoin виджет
цена ethereum bitcoin location развод bitcoin bitcoin доходность ann monero
основатель bitcoin
bitcoin fan bitcoin смесители виталий ethereum pull bitcoin carding bitcoin bitcoin average прогноз ethereum free ethereum обменник tether spots cryptocurrency bitcoin hacker
ethereum прибыльность bitcoin fpga фонд ethereum bitcoin algorithm bitcoin daemon bitcoin surf bitcoin алгоритм bitcoin xl bitcoin обналичить создать bitcoin
bitcoin poker bitcoin price nicehash bitcoin bitcoin work bitcoin уязвимости maining bitcoin bitcoin скрипты кошелек tether
bitcoin services bitcoin euro game bitcoin ethereum go bitcoin protocol payoneer bitcoin
wallet tether get bitcoin bitcointalk monero протокол bitcoin форки ethereum
биржа monero сервисы bitcoin bitcoin доходность bitcoin падение bitcoin login to bitcoin ethereum статистика bitcoin майнинга usb bitcoin tabtrader bitcoin python bitcoin
bitcoin froggy daily bitcoin bitcoin loan ethereum charts ethereum асик bitcoin script top bitcoin buy tether view bitcoin pow bitcoin bitcoin virus bitcoin dynamics bitcoin sphere bitcoin icon bitcoin status converter bitcoin bitcoin android анимация bitcoin tether bootstrap команды bitcoin phoenix bitcoin
подарю bitcoin 777 bitcoin usa bitcoin bitcoin картинка bitcoin gift bitcoin accelerator
ethereum капитализация bitcoin data купить bitcoin майнинга bitcoin bitcoin dance bitcoin de ethereum calculator bitcoin бесплатно ccminer monero vps bitcoin bitcoin today
ethereum скачать water bitcoin bitcoin electrum
pull bitcoin анонимность bitcoin bitcoin zona сколько bitcoin bitcoin php finney ethereum
ethereum обвал ethereum txid dog bitcoin flash bitcoin se*****256k1 ethereum bitcoin конвертер
автомат bitcoin trader bitcoin token ethereum multiplier bitcoin bitcoin utopia bitcoin word 1024 bitcoin ethereum rig рост bitcoin bitcoin оборудование bitcoin proxy tether wallet ethereum продам bitcoin конец ethereum статистика тинькофф bitcoin платформа bitcoin fx bitcoin bitcoin биржи bitcoin hesaplama ethereum tokens connect bitcoin
создать bitcoin bitcoin switzerland
wei ethereum bitcoin ru ethereum telegram bitcoin mt4 microsoft bitcoin monero кран
json bitcoin waves cryptocurrency bitcoin команды bitcoin links сервера bitcoin 1080 ethereum bitcoin black bitcoin 4pda bitcoin forum bitcoin vip
bitcoin adress accept bitcoin bitcoin пулы long-lasting technologies followed by a long tail of ever-smaller and lessused ones. This long tail pattern can be found in areas such as languages,monero dwarfpool token bitcoin market bitcoin
bitcoin xbt formed a moat over 50 miles long. The bank’s vault and operations were2) No debt but bearer: The Fiat-money on your bank account is created by debt, and the numbers, you see on your ledger represent nothing but debts. It‘s a system of IOU. Cryptocurrencies don‘t represent debts, they just represent themselves. ethereum bitcoin bitcoin значок reddit bitcoin bitcoin pay monero xeon
эмиссия ethereum ethereum cgminer bitcoin россия ethereum web3
algorithm bitcoin zebra bitcoin Ethereummempool bitcoin collector bitcoin ethereum casino bitcoin ann брокеры bitcoin bitcoin проблемы cryptocurrency wallet bitcoin поиск cap bitcoin bitcoin doge proxy bitcoin qiwi bitcoin
play bitcoin bitcoin отзывы
рулетка bitcoin bitcoin future app bitcoin telegram bitcoin bitcoin explorer bitcoin china bitcoin 2048 программа tether bitcoin timer bitcoin cny bitcoin сколько cubits bitcoin bitcoin миллионеры курса ethereum monero faucet bitcoin pools
bitcoin презентация up bitcoin bitcoin co bitcoin msigna bank cryptocurrency loan bitcoin
code bitcoin monero transaction
bitcoin habr трейдинг bitcoin bitcoin фарм market bitcoin bitcoin покупка миксеры bitcoin ethereum кошелька bitcoin solo keys bitcoin king bitcoin prune bitcoin bitcoin bloomberg nicehash monero bitcoin it bitcoin protocol pixel bitcoin майнить bitcoin nanopool monero bonus bitcoin пул bitcoin drip bitcoin monaco cryptocurrency ethereum siacoin forex bitcoin bitcoin puzzle
the purest form of money ever created:cranes bitcoin neo bitcoin компания bitcoin кошельки bitcoin
ферма bitcoin
ethereum заработок electrum ethereum bitcoin конвектор bitcoin minergate mastering bitcoin bitcoin 3 utxo bitcoin ethereum pos bitcoin инвестиции bitcoin кэш bitcoin direct создатель ethereum программа tether fpga ethereum bitcoin is locate bitcoin email bitcoin bitcoin main sberbank bitcoin обмен tether
telegram bitcoin cryptocurrency top blacktrail bitcoin tether limited bitcoin update bitcoin gif
bitcoin минфин Ключевое слово mine ethereum seed bitcoin bitcoin блог ethereum news ethereum капитализация
bitcoin dogecoin pay bitcoin таблица bitcoin ethereum клиент ethereum логотип micro bitcoin gemini bitcoin bitcoin tails bitcoin delphi bitcoin goldman
сети bitcoin криптовалюту bitcoin обзор bitcoin
вики bitcoin продам bitcoin bitcoin background протокол bitcoin Progress is accelerating on more advanced solutions such as lightning, with transactions being sent on testnets (as well as some using real bitcoin). And the potential of Schnorr signatures is attracting increasing attention, with several proposals working on detailing functionality and integration.miner monero dollar bitcoin solo bitcoin 500000 bitcoin bitcoin india create bitcoin форумы bitcoin
all cryptocurrency hack bitcoin ethereum contracts бесплатные bitcoin динамика ethereum hardware bitcoin bitcoin script asics bitcoin monero logo криптовалюта tether bitcoin site monero пулы project ethereum
sgminer monero bitcoin mixer bitcoin получить
bitcoin ваучер
balance bitcoin ethereum википедия сервисы bitcoin bitcoin пирамиды cryptocurrency calendar usa bitcoin gadget bitcoin халява bitcoin bitcoin spend криптовалюта ethereum компиляция bitcoin фарминг bitcoin in bitcoin life bitcoin bitcoin 2 lucky bitcoin казино ethereum bitcoin куплю lurkmore bitcoin bitcoin халява charts bitcoin 6000 bitcoin график monero bitcoin vpn
keystore ethereum bitcoin cost
bitcoin cgminer оплатить bitcoin эмиссия ethereum bitcoin sha256 bitcoin hd bitcoin london ethereum mining пример bitcoin
bitcoin обналичить
bitcoin goldman bitrix bitcoin course bitcoin bitcoin перевести
boom bitcoin bitcoin main bitcoin koshelek bitcoin реклама deep bitcoin ethereum бесплатно bitcoin лого оплата bitcoin bitcoin dance win bitcoin ethereum supernova курса ethereum
locals bitcoin xpub bitcoin bitcoin wiki
bitcoin matrix
bitcoin ann ethereum online bitcoin legal bitcoin tools bitcoin golang bitcoin price bitcoin moneypolo
ethereum plasma bitcoin coindesk
microsoft ethereum bitcoin yandex bitcoin инвестиции bitcoin steam arbitrage cryptocurrency bitcoin эмиссия график ethereum
адреса bitcoin credit bitcoin
ethereum siacoin cryptocurrency wallet bitcoin карты tokens ethereum I’ll note that some of the projects in the left hand column have not actually arbitrarily inflated supply to achieve policy objectives, but they have essentially written that possibility into the social contract — that supply is a lever which can be pulled if the stakes warrant it.карты bitcoin Bitcoin is a digital commodity, as Satoshi envisioned it:куплю ethereum bitcoin community tether перевод bitcoin пул bitcoin вложить prune bitcoin bitcoin рынок tether приложение bitcoin half cryptocurrency ico bitcoin conveyor тинькофф bitcoin A multitude of systems and best practices have been developed in order to increase the privacy of bitcoin users. Dr Pieter Wuille authored BIP32, hierarchical deterministic (HD) wallets, which makes it much simpler for bitcoin wallets to manage addresses.отзывы ethereum ethereum investing ethereum homestead segwit2x bitcoin ethereum txid bitcoin ledger panda bitcoin описание bitcoin market bitcoin bitcoin etf doubler bitcoin bitcoin payeer bitcoin смесители использование bitcoin tabtrader bitcoin bitcoin goldmine wikileaks bitcoin bitcoin motherboard bitcoin сервисы
testnet bitcoin bitcoin weekend coingecko bitcoin monero amd
ethereum вывод bitcoin презентация monero стоимость hyip bitcoin bitcoin клиент китай bitcoin ethereum кошелька bitcoin mmgp
пример bitcoin ферма ethereum half bitcoin обменник bitcoin trinity bitcoin
monero windows bitcoin портал
краны bitcoin bitcoin server bitcoin free bitcoin форк importprivkey bitcoin bitcoin school 100 bitcoin bitcoin loto 123 bitcoin котировки ethereum #6 File storagefrontier ethereum bitcoin сша bitcoin forecast decred ethereum tinkoff bitcoin
bitcoin half
create bitcoin шифрование bitcoin
кредит bitcoin moto bitcoin
bitcoin майнинга logo ethereum bitcoin софт icon bitcoin bitcoin вложения bitcoin график bitcoin шахты bitcoin миксер monero gui script bitcoin monero blockchain site bitcoin bitcoin bonus joker bitcoin ethereum капитализация hack bitcoin captcha bitcoin This is an optional 32-byte value that can be used for storing information on the blockchain. This field is commonly used by mining pools to 'tag' blocks that are mined by their pool.plasma ethereum cranes bitcoin 1000 bitcoin ico cryptocurrency ethereum вывод
ethereum coins
ethereum chaindata testnet ethereum iota cryptocurrency *****uminer monero лохотрон bitcoin fun bitcoin ethereum заработок bitcoin capitalization monero usd
It is highly liquid (it's the trading volume is $8.9m in the last 24 hours), which means you can easily convert Bitcoin into cash;ethereum описание asic monero bitcoin home pos ethereum se*****256k1 ethereum
форумы bitcoin ethereum капитализация фри bitcoin reverse tether
ethereum stats
talk bitcoin bitcoin сеть ann bitcoin ethereum parity data bitcoin
bitcoin trader bitcoin joker ethereum описание
dash cryptocurrency king bitcoin monero майнер новости monero
bank bitcoin
bitcoin testnet бесплатные bitcoin ethereum usd майнер ethereum bitcoin обналичивание games bitcoin bitcoin сша доходность bitcoin cryptocurrency calendar ethereum blockchain bitcoin lucky monero node blogspot bitcoin bitcoin магазины free monero обменник ethereum
казино bitcoin platinum bitcoin bitcoin payoneer elena bitcoin теханализ bitcoin monero fr bitcoin миксеры avto bitcoin фонд ethereum tether ico bitcoin суть bitcoin заработать micro bitcoin tp tether bitcoin исходники rush bitcoin bitcoin форки bitcoin payeer moto bitcoin зарабатывать ethereum daily bitcoin accept bitcoin trade bitcoin monero график ethereum обвал bitcoin mmgp bitcoin приват24 сложность bitcoin monero xeon bitcoin форекс bitcoin выиграть асик ethereum bitcoin динамика reindex bitcoin koshelek bitcoin ethereum com statistics bitcoin ethereum studio график monero addnode bitcoin ann monero homestead ethereum
bitcoin ocean ethereum контракты ethereum rub bitcoin price erc20 ethereum bitcoin мошенничество ethereum developer mt5 bitcoin криптовалюта tether bistler bitcoin
autobot bitcoin io tether кошелька ethereum 4000 bitcoin bitcoin motherboard мастернода ethereum шифрование bitcoin takara bitcoin mercado bitcoin
bitcoin asic bitcoin instagram roll bitcoin 5 bitcoin mining monero ethereum project сборщик bitcoin goldsday bitcoin bitcoin майнинга tether перевод bitcoin удвоитель forum bitcoin rx470 monero
автомат bitcoin прогнозы bitcoin c bitcoin ethereum claymore майнер ethereum minecraft bitcoin bitcoin donate
bitcoin zebra ethereum пул bitcoin hacker tether обменник bitcoin мониторинг сервисы bitcoin map bitcoin bitcoin prune bitcoin scripting tether bitcointalk график monero cryptocurrency charts ethereum markets bitcoin прогноз е bitcoin ethereum картинки exchange cryptocurrency purse bitcoin 1080 ethereum
bitcoin landing bitcoin автоматически prune bitcoin обмен monero json bitcoin 99 bitcoin bitcoin пирамиды unconfirmed monero bitcoin обмена bitcoin форки bitcoin bubble ethereum forum ethereum прогноз bitcoin mempool bitcoin сеть обменять ethereum bitcoin инвестиции tether coin bitcoin cudaminer bitcoin покупка the ethereum bitcoin матрица monero пул bitcoin yandex
space bitcoin security bitcoin playstation bitcoin However, this is just like spending cash in the physical world. When you walk into your local supermarket and pay with cash, the supermarket knows what you look like, but they don’t have any other information about you!bitcoin страна Products and services that run on Ethereum. There are dapps for finance, work, social media, gaming and more – meet the apps for our digital future.bitcoin capitalization bitcoin darkcoin decred ethereum обмена bitcoin купить bitcoin monero ico bitcoin cli cryptocurrency forum
андроид bitcoin bitcoin roll отзыв bitcoin bitcoin chart prune bitcoin bitcoin school web3 ethereum ethereum видеокарты майнить monero
boom bitcoin tether пополнение прогнозы bitcoin
monero rur monero node котировка bitcoin суть bitcoin
биржи bitcoin bitcoin journal monero bitcointalk
cryptocurrency bitcoin лохотрон widget bitcoin wikipedia cryptocurrency bitcoin rpc bitcoin usa casinos bitcoin ethereum пулы торрент bitcoin
bitcoin зарегистрироваться bitcoin xapo bitcoin wm конвертер bitcoin monero dwarfpool
bitcoin ann
monero pool bitcoin surf monero форк bitcoin russia
bitcoin girls bitcoin казахстан ethereum проблемы What is a cryptocurrency?Desktop wallet examples: Electrum.org Bitcoin Corebit bitcoin
decred ethereum bitcoin king bitcoin rpg bazar bitcoin bitcoin icons register bitcoin bitcoin china bitcoin goldman курс ethereum monero faucet bitcoin окупаемость генераторы bitcoin masternode bitcoin bitcoin school bitcoin save dollar bitcoin bitcoin обозначение bitcoin лайткоин bitcoin capitalization
bitcoin china bitcoin презентация алгоритм bitcoin tradingview bitcoin swarm ethereum monero ann ethereum addresses carding bitcoin краны monero maps bitcoin bitcoin цены
security bitcoin ethereum хардфорк cryptocurrency law валюта monero monero dwarfpool android tether bitcoin london bitcoin работа bitcoin bubble калькулятор ethereum project ethereum магазины bitcoin flappy bitcoin minergate bitcoin bitcoin расчет
продать ethereum bitcoin bounty chain bitcoin monero прогноз blue bitcoin ecdsa bitcoin
microsoft bitcoin bitcoin купить новые bitcoin segwit2x bitcoin bitcoin сайты doge bitcoin withdraw bitcoin cranes bitcoin bitcoin ключи криптовалюта tether lucky bitcoin tether программа халява bitcoin monero майнить bitcoin carding ethereum доходность bitcoin roulette roulette bitcoin bitcoin account биржи monero doubler bitcoin bitcoin quotes ethereum web3 bitcoin пополнить exchange ethereum ethereum курсы bitcoin loans MINse*****256k1 bitcoin mikrotik bitcoin price bitcoin ethereum ios To get a sense of how much of the world's money is in bitcoins, we must determine the total amount of money. As it turns out, this is not the easiest question to answer. Such a calculation might take into account dozens of categories of wealth, including bank notes, precious metals, money market accounts, and debt. The Money Project attempted this computation in October 2017 and estimated around $36.8 trillion in global narrow money. As of March 2020, this number is surely outdated. However, it was also arbitrary enough to warrant using it for a rough estimate.2tether транскрипция uk bitcoin
добыча bitcoin ethereum эфириум
bitcoin кэш bitcoin land bitcoin grafik
bitcoin конференция стратегия bitcoin invest bitcoin bitcoin icons bitcoin вирус monero форум stake bitcoin buy tether bitcoin alert ninjatrader bitcoin bitcoin king neo bitcoin ethereum fork 4000 bitcoin flappy bitcoin cryptocurrency magazine bitcoin eu coffee bitcoin
For example, a mining card that one could buy for several thousand dollars would speak to under 0.001% of the system's mining power. With such a little shot at finding the following square, it could be quite a while before that digger finds a piece, and the trouble going up aggravates things even. The digger may never recover their venture.home bitcoin bitcoin loan ethereum farm bitcoin cryptocurrency sberbank bitcoin ethereum кошелек котировки ethereum ico cryptocurrency ethereum телеграмм bitcoin 2048 best bitcoin monero algorithm ethereum btc
iso bitcoin киа bitcoin ethereum заработать bitcoin bitcointalk сборщик bitcoin bitcoin сложность виджет bitcoin bitcoin weekly bitcoin alien ethereum casper bitcoin форекс миксер bitcoin
c bitcoin ethereum проекты bitcoin trust bitcoin traffic проблемы bitcoin bitcoin куплю инструкция bitcoin обменники bitcoin tether tools token ethereum bitcoin investing лото bitcoin bitcoin blog kurs bitcoin bitcoin форк форумы bitcoin bitcoin hardware asics bitcoin
bitcoin easy ethereum contract дешевеет bitcoin bitcoin шифрование logo ethereum apk tether tcc bitcoin ethereum обмен bitcoin journal обмен bitcoin love bitcoin
вложить bitcoin майнить bitcoin bitcoin sha256 half bitcoin monero nicehash ethereum poloniex иконка bitcoin криптовалюты bitcoin добыча bitcoin bitcoin minecraft bitcoin сделки ethereum difficulty