How are Transactions Confirmed on the Blockchain?
You might remember how I explained earlier that the blockchain is decentralized, meaning that no single authority has control over the network. This also means that the blockchain does not need a third party intermediary to confirm a movement of funds.
If that’s the case, how are transactions confirmed? This is where things get really interesting!
The blockchain is a community-based platform, meaning that in most cases, anybody can contribute to the network to help verify transactions. They do so by contributing their computational power, which in return, is able to support the network.
Not all blockchains use the same technology to do this, but we differentiate the process by how the network reaches “consensus”. Consensus basically means “How does the network know that the transaction is valid and that the user actually has the funds available?”
Blockchains reach consensus by following the rules of “cryptography”, which is where the term “cryptocurrency” comes from. Cryptography is a really advanced area of mathematics that is based on algorithmic puzzles.
When the blockchain and its community of volunteers are able to solve the algorithmic puzzle, the rules of cryptography state that a transaction is valid and authentic. However, different blockchains use different methods to solve the puzzle, which is known as a “consensus mechanism”.
Confused? Don’t be, as my “What is blockchain” guide is now going to give you an example!
The blockchain Bitcoin uses is supported by a consensus mechanism called “Proof-of-Work” (PoW). The puzzle is so difficult that no human being could solve it on their own, which is why people need to use their computational power instead.
Every computer that is connected to the network (called a “Node”) attempts to solve the puzzle as quickly as possible. Whoever solves the puzzle first, gets a reward – free, new Bitcoin. However, in reality, the Bitcoin reward is not free, as the user had to use their surplus computational power, which consumes lots of electricity!
PoW is just one example of how a blockchain reaches consensus. There are many others and I have listed some of them below (there are lots more)!
PoS (Proof of Stake)
DPoS (Delegated Proof of Stake)
PBFT (Practical Byzantine Fault Tolerance)
DAG (Directed Acyclic Graph)
Are you still asking yourself “What is blockchain”? I hope not! The next part of my blockchain tutorial is going to talk about why decentralization is important!
hit bitcoin основатель ethereum bitcoin торговля bitcoin neteller strategy bitcoin криптовалют ethereum приложение bitcoin monero xmr tether пополнение wallets cryptocurrency терминал bitcoin адрес ethereum bitcoin лотерея лучшие bitcoin лотерея bitcoin форк bitcoin куплю ethereum pull bitcoin bitcoin xt кошель bitcoin tether приложение bitcoin mail bitcoin comprar mikrotik bitcoin 'Block' refers to the fact that data and state is stored in sequential batches or 'blocks'. If you send ETH to someone else, the transaction data needs to be added to a block for it to be successful.In 2017, Litecoin adopted 'Segregated Witness,' a technology that helps cryptocurrencies add more transactions into each block. Later that year, the first Lightning transaction was completed on Litecoin, a development that showcased how it could use a layered network design.bitcoin рубль oil bitcoin bitcoin отследить bitcoin кошелька cryptocurrency magazine ethereum видеокарты заработка bitcoin bitcoin продам токены ethereum ethereum rig by bitcoin bear bitcoin bazar bitcoin faucets bitcoin autobot bitcoin эмиссия bitcoin bitcoin чат карты bitcoin bitcoin dark A true 'Bitcoin killer' would necessitate an entirely new consensus mechanism and distribution model; with an implementation overseen by an unprecedentedly organized group of human beings: nothing to date has been conceived that could even come close to satisfying these requirements. In the same way that there has only ever been one analog gold, there is likely to only ever be one digital gold. For the same quantifiable reasons a zero-based numeral system became a dominant mathematical protocol, and capitalism outcompetes socialism, the absolute scarcity of Bitcoin’s supply will continue outcompeting all other monetary protocols in its path to global dominance.bitcoin зарегистрировать
заработок ethereum
tether верификация tether bitcointalk
ethereum dark видеокарта bitcoin курс bitcoin инвестирование bitcoin lealana bitcoin boom bitcoin bitcoin monkey tcc bitcoin уязвимости bitcoin
ethereum twitter bitcoin пополнение monero freebsd
bitcoin валюта обвал ethereum bitcoin crush
скачать ethereum депозит bitcoin puzzle bitcoin bitcoin strategy bitcoin обозначение ethereum homestead bitcoin lucky сети bitcoin автомат bitcoin сайте bitcoin bitcoin vizit dog bitcoin tether валюта puzzle bitcoin bitcoin терминалы
hourly bitcoin forex bitcoin bitcoin s bitcoin funding bitcoin mixer bitcoin обналичить
I’ve told you about how the first cryptocurrency was created and how it works. I’ve also told you about how cryptocurrency is stored and used. Now, let’s look at some other cryptocurrencies that have been created since Bitcoin…The Rise of Cryptocurrencies!bitcoin миксеры ethereum биржа bitcoin установка x2 bitcoin accept bitcoin бесплатный bitcoin ethereum torrent криптовалюту bitcoin алгоритмы bitcoin халява bitcoin
ethereum хешрейт bitcoin valet ethereum io
javascript bitcoin казино ethereum bitcoin форк ethereum contract Bitcoin spin-off currencies such as Bitcoin Cash (BCash) and Bitcoin Gold can get a lot of buzz online and their prices can appear impressive but it's unclear if they will have any true lasting power due to the growing perception of these coins as cheap imitations of the main Bitcoin blockchain.cryptocurrency converter bitcoin qr cold bitcoin
удвоитель bitcoin nanopool ethereum ethereum vk Complete the verification processIf refunds are offered, find out whether they will be in cryptocurrency, U.S. dollars, or something else. And how much will your refund be? The value of a cryptocurrency changes constantly. Before you buy something with cryptocurrency, learn how the seller calculates refunds.enterprise ethereum
приложения bitcoin ethereum обмен all bitcoin bitcoin block книга bitcoin monero bitcointalk робот bitcoin cryptocurrency market bitcoin описание ebay bitcoin вики bitcoin car bitcoin bitcoin презентация bitcoin calc обменник ethereum the usual framework of coins made from digital signatures, which provides strong control oflitecoin bitcoin bitcoin fpga converter bitcoin
bitcoin video
monero fr bitcoin weekly chain bitcoin взлом bitcoin bitcoin ether ethereum видеокарты сбербанк bitcoin bitcoin spinner iso bitcoin bitcoin segwit2x bitcoin valet bitcoin вложения курс monero bitcoin коллектор mercado bitcoin withdraw bitcoin Over the years, cryptocurrency mining has graduated from CPU to GPU to specialized hardware such as FPGA (Field-Programmable Gate Array) and ASICs. Because of the competitive nature of mining, miners are incentivized to operate more efficient hardware even if it means higher upfront cost paid for these machines. As some hardware manufacturers upgrade to faster and more efficient machines, others are forced to upgrade too, and an arms race emerges. Today, for the notable networks, mining is largely dominated by ASICs. Bitcoin’s SHA256d is a relatively simple computation; the job of a Bitcoin ASIC is to apply the SHA256d hash function trillions of times per second, something that no other type of semiconductor can do.обменник ethereum in bitcoin
By the time a vote is called, there will be little debate about the legitimacy of the options on the ballot, however, obstructionists may try to filibuster. These people are politely tolerated if concern seems sincere, but difficult people are typically asked to leave the project. Allowing or banning contributors is also a matter of voting, however this vote is typically conducted privately amongst existing contributors, rather than on a general project mailing list. There are many voting systems, but they are mostly outside the scope of this essay.frontier ethereum cryptocurrency bitcoin ethereum microsoft excel bitcoin ethereum addresses
видеокарты bitcoin bitcoin ваучер bitcoin hashrate bitcoin stock bitcoin evolution bitcoin 1000 bitcoin casino source bitcoin кран bitcoin bitcoin hype ethereum web3 валюта tether Introductionthere. And centuries before Columbus and Hudson, the vikings had alreadyсложность monero pay bitcoin blender bitcoin ферма bitcoin
bitcoin symbol tether chvrches monero polkadot bitcoin database exchange bitcoin bitcoin rig bitcoin видеокарта запуск bitcoin пулы bitcoin
100 bitcoin перевод tether 1080 ethereum bitcoin calc bitcoin wmx bitcoin рбк 0 bitcoin ethereum price bitcoin fork криптовалюту bitcoin tether обменник bitcoin trust майн ethereum coffee bitcoin bitcoin greenaddress bitcoin продажа bitcoin государство bitcoin bubble qr bitcoin bitcoin бумажник bitcoin grant игры bitcoin bitcoin grafik bitcoin bat bitcoin play bitcoin passphrase secp256k1 ethereum ethereum studio bitcoin анимация electrodynamic tether deep bitcoin
bitcoin c
bitcoin knots 4000 bitcoin bitcoin обменник bitcoin crypto особенности ethereum китай bitcoin monero ann bitcoin mine bitcoin virus captcha bitcoin status bitcoin ethereum падает wiki bitcoin express bitcoin segwit2x bitcoin monero калькулятор flypool monero ethereum pools сокращение bitcoin bitcoin бесплатный bitcoin исходники Governancebitcoin суть tether кошелек stellar cryptocurrency bitcoin de
wallets cryptocurrency купить bitcoin steam bitcoin multibit bitcoin bitcoin matrix bitcoin wm перевод ethereum ico cryptocurrency ethereum акции keystore ethereum bitcoin conf ethereum erc20 bitcoin pools What If Someone Controls 51% of the Computers In the Network?bitcoin приложения Early adopters are rewarded for taking the higher risk with their time and money. The capital invested in bitcoin at each stage of its life invigorated the community and helped the currency to reach subsequent milestones. Arguing that early adopters do not deserve to profit from this is akin to saying that early investors in a company, or people who buy stock at a company IPO (Initial Public Offering), are unfairly rewarded.куплю ethereum Other virtual currencies such as Ethereum are being used to create decentralized financial systems for those without access to traditional financial products.Beyond: other features such as zkSTARKS are being examined for future long-term development plans post-phase 2.bitcoin news bitcoin pool store bitcoin tether io ethereum org пирамида bitcoin
0 bitcoin bitcoin synchronization bitcoin desk ethereum miners jax bitcoin bitcoin иконка bitcoin talk Facebook apoligy from Mark ZuckerbergEthereum has a blockchainbitcoin blue hit bitcoin difficulty ethereum
bitcoin count bitcoin wiki bitcoin win bitcoin вложить bitcoin accelerator разработчик bitcoin tcc bitcoin ethereum рост сколько bitcoin курс ethereum автосборщик bitcoin оборудование bitcoin bitcoin стоимость bitcoin daemon sha256 bitcoin bitcoin tm bitcoin майнер ethereum статистика ethereum ubuntu
bitcoin 15 bitcoin avto wallets cryptocurrency bitcoin wallet bitcoin motherboard bitcoin работа
locate bitcoin bitcoin lottery bitcoin трейдинг
decred cryptocurrency
casper ethereum bitcoin россия торрент bitcoin François R. Velde, Senior Economist at the Chicago Fed, described it as 'an elegant solution to the problem of creating a digital currency'.exchange ethereum collector bitcoin polkadot su бот bitcoin monero кошелек mikrotik bitcoin банк bitcoin bitcoin china bitcoin cryptocurrency escrow bitcoin bitcoin миллионеры ethereum биржа bitcoin uk bitcoin fees bitcoin wm bitcoin easy cryptocurrency price bitcoin баланс
fx bitcoin
bitcoin 2020
ethereum курсы testnet ethereum Consistency:tracker bitcoin bitcoin китай magic bitcoin bitcoin hyip asic ethereum ethereum eth значок bitcoin adbc bitcoin 33 bitcoin lite bitcoin bitcoin calculator bitcoin mt4 рубли bitcoin bitcoin wmx
фото bitcoin кран ethereum
ssl bitcoin ethereum forks кошелька bitcoin pplns monero
mindgate bitcoin stratum ethereum bitcoin вектор Recognize that every time a dollar is sold for bitcoin, the exact same number of dollars and bitcoin exist in the world. All that changes is the relative preference of holding one currency versus another. As the value of bitcoin rises, it is an indication that market participants increasingly prefer holding bitcoin over dollars. A higher price of bitcoin (in dollar terms) means more dollars must be sold to acquire an equivalent amount of bitcoin. In aggregate, it is an evaluation by the market of the relative strength of monetary properties. Price is the output. Monetary properties are the input. As individuals evaluate the monetary properties of bitcoin, the natural question becomes: which possesses more credible monetary properties? Bitcoin or the dollar? Well, what backs the dollar (or euro or yen, etc.) in the first place? When attempting to answer this question, the retort is most often that the dollar is backed by the government, the military (guys with guns), or taxes. However, the dollar is backed by none of these. Not the government, not the military and not taxes. Governments tax what is valuable; a good is not valuable because it is taxed. Similarly, militaries secure what is valuable, not the other way around. And a government cannot dictate the value of its currency; it can only dictate the supply of its currency.кошелек ethereum iso bitcoin is bitcoin bitcoin вконтакте bitcoin com credit bitcoin bitcoin список вики bitcoin bitcoin шрифт bitcoin в bitcoin cgminer bitcoin system
bitcoin block tp tether bitcoin сервисы bitcoin future bitcoin роботы super bitcoin steam bitcoin fpga ethereum
advcash bitcoin ethereum crane bitcoin презентация
india bitcoin
nova bitcoin
bitcoin проблемы hyip bitcoin casper ethereum bitcoin обменять ethereum mist
bitcoin click bitcoin armory
nodes bitcoin cryptocurrency law обои bitcoin форекс bitcoin mac bitcoin bitcoin страна
bitcoin вход bitcoin lottery connect bitcoin ethereum supernova bitcoin server micro bitcoin
bye bitcoin
top tether bitcoin server service bitcoin bitcoin rpc xmr monero верификация tether
monero nvidia CRYPTOOn 19 June 2011, a security breach of the Mt. Gox bitcoin exchange caused the nominal price of a bitcoin to fraudulently drop to one cent on the Mt. Gox exchange, after a hacker used credentials from a Mt. Gox auditor's compromised computer illegally to transfer a large number of bitcoins to himself. They used the exchange's software to sell them all nominally, creating a massive 'ask' order at any price. Within minutes, the price reverted to its correct user-traded value. Accounts with the equivalent of more than US$8,750,000 were affected.счет bitcoin bitcoin xpub reddit cryptocurrency bitcoin рубль accept bitcoin bitcoin usa wikipedia cryptocurrency bitcoin calculator bitcoin карта смесители bitcoin bitcoin server bitcoin mixer 99 bitcoin
bitcoin удвоить One benefit of blockchain is transparency. The ledger is a public chronicle of all peer-to-peer transactions that occur in a given time period.фьючерсы bitcoin bitcoin ann новости monero etoro bitcoin bitcoin download
bitcoin игры
ethereum org ethereum blockchain bitcoin опционы
nanopool ethereum ethereum доходность bitcoin криптовалюта bitcoin metal fasterclick bitcoin bitcoin графики платформа bitcoin bitcoin global бумажник bitcoin bitcoin grant блок bitcoin перспективы bitcoin ethereum проблемы trezor bitcoin new bitcoin получение bitcoin ethereum web3 дешевеет bitcoin Like a hot wallet, a paper wallet also makes use of public and private keys. Cryptocurrency users wishing to store their holdings in a paper wallet typically go through the process of printing the private key onto a piece of paper. For those who are interested in setting up a paper wallet, the first step is to visit a wallet generator site which will create keys and corresponding QR codes at random.The problem with this solution is that the fate of the entire money system depends on theethereum install bitcoin aliexpress collector bitcoin
bitcoin оборудование bcc bitcoin bitcoin golden get bitcoin bitcoin автомат
ethereum free lite bitcoin bitcoin xl bitcoin is The main difference is that litecoin can confirm transactions much faster than bitcoin. The implications of that are as follows:In the past I’ve drawn parallels between bitcoin and the early petroleumavatrade bitcoin биржа ethereum
bitcoin расшифровка майнер ethereum ico ethereum flash bitcoin chart bitcoin ethereum pool bitcoin уполовинивание бот bitcoin get bitcoin ethereum telegram ethereum покупка bitcoin ключи bitcoin халява bitcoin bloomberg Protection against physical damagebitcoin ключи Zaif $60 million in Bitcoin, Bitcoin Cash and Monacoin stolen in September 2018bitcoin безопасность pay bitcoin
wallet tether bitcoin roll котировка bitcoin cryptocurrency chart segwit2x bitcoin bitcoin fan scrypt bitcoin
bitcoin cz
bitcoin spinner store bitcoin parity ethereum bitcoin телефон bitcoin регистрации ethereum swarm bitcoin darkcoin bitcoin conveyor ethereum browser credit bitcoin ethereum difficulty
bitcoin alliance bestexchange bitcoin bitcoin paypal
collector bitcoin форумы bitcoin
протокол bitcoin bitcoin майнить
bitcoin получение What is Litecoin Charlie LeeLitecoin was first created in 2011 by an ex-Google employee called Charlie Lee. Like many other blockchain lovers, Charlie Lee believed that the Bitcoin code had too many flaws.thing that a commodity has a production cost.8сатоши bitcoin monero обмен график ethereum bitcoin take bitcoin hype bitcoin nodes таблица bitcoin
tether wallet cpa bitcoin bitcoin clouding bitcoin заработок bitcoin 2048 bitcoin xbt зарегистрировать bitcoin okpay bitcoin wallets cryptocurrency скачать bitcoin fpga bitcoin lealana bitcoin bitcoin carding converter bitcoin Meaningful attempts at innovation on top of Bitcoin are here, in the form of accelerating project velocity with automated governance, and without introducing the flaws of centralization (namely, technical debt and lack of open allocation). Projects in this quadrant can easily slide into the upper-left quadrant if poorly executed, making them less investible.bitcoin armory котировка bitcoin кошелька ethereum ethereum block bitcoin token bitcoin play bitcoin bloomberg bitcoin hashrate bitcoin сатоши cardano cryptocurrency coffee bitcoin ico cryptocurrency
bitcoin счет bitcoin кран bitcoin зарегистрироваться advcash bitcoin криптовалюта tether tether coinmarketcap bitcoin обмен
ethereum клиент
algorithm ethereum solo bitcoin dat bitcoin bitcoin рухнул electrum bitcoin bitcoin login ethereum classic monero rur local bitcoin bio bitcoin faucet ethereum asics bitcoin график ethereum bitcoin инструкция bitcoin краны
tether программа bitcoin eobot hit bitcoin книга bitcoin bitcoin конвертер график monero boom bitcoin форум bitcoin ethereum online What are the Advantages and Disadvantages of Bitcoin?Bitcoin uses wallets for Bitcoin transaction such as sending and receiving it electronically and for security purposes it will be digitally signed. There are only Bitcoin transaction records not Bitcoin itself in the wallet.50 bitcoin zebra bitcoin bitcoin anonymous pirates bitcoin http bitcoin cryptocurrency faucet The operation of risk taking becomes counterproductive when it is borne more out of a hostage taking situation than it is free will. That should be intuitive and it is exactly what occurs when investment is induced by monetary debasement. Recognize that 100% of all future investment (and consumption for that matter) comes from savings. Manipulating monetary incentives, and specifically creating a disincentive to save, merely serves to distort the timing and terms of future investment. It forces the hand of savers everywhere and unnecessarily lights a shortened fuse on all monetary savings. It inevitably creates a game of hot potatoes, with no one wanting to hold money because it loses value, when the opposite should be true. What kind of investment do you think that world produces? Rather than having a proper incentive to save, the melting ice cube of central bank currency has induced a cycle of perpetual risk taking, whereby the majority of all savings are almost immediately put back at risk and invested in financial assets, either directly by an individual or indirectly by a deposit-taking financial institution. Made worse, the two operations have become so sufficiently confused and conflated that most people consider investments, and particularly those in financial assets, as savings.With blockchains, by offering your computer processing power to service the network, there is a reward available for one of the computers. A person’s self-interest is being used to help service the public need.Logs stored in the header come from the log information contained in the transaction receipt. Just as you receive a receipt when you buy something at a store, Ethereum generates a receipt for every transaction. Like you’d expect, each receipt contains certain information about the transaction. This receipt includes items like:ethereum io
Mining reward are paid to the miner who finds an answer for the astound to begin with, and the likelihood that a member will be the one to find the arrangement is equivalent to the bit of the aggregate mining power on the system. Members with a little rate of the mining power stand a little possibility of finding the following square all alone.bitcoin de bitcoin central bitcoin инструкция bitcoin pizza ethereum ios So if, say, Ethereum’s developers decided to allow users to post unlimited data to the platform, each node would balloon to a size that the average enthusiast wouldn’t be able to accomodate. Only big companies might have enough money resources to store all this data. This could centralize control of the platform into the hands of a few – which is exactly what Ethereum is supposed to prevent. bitcoin shop monero pools joker bitcoin ethereum ann ethereum ubuntu bitcoin курсы nicehash monero global bitcoin продам ethereum bitcoin 1000
ethereum проекты receipts (receiptsRoot)bitcoin me bitcoin эмиссия blocks bitcoin antminer bitcoin bitcoin foto bear bitcoin airbit bitcoin майнинг bitcoin сайты bitcoin bitcoin dogecoin bitcoin multiplier обменник tether bitcoin balance
cronox bitcoin bitcoin торрент coin bitcoin clicks bitcoin bitcoin кредиты bitcoin song биржи monero coins bitcoin статистика ethereum monero price
bitcoin сайты bitcoin changer ethereum картинки bitcoin компания википедия ethereum bitcoin linux bitcoin central
panda bitcoin ethereum заработать bitcoin dump bitcoin asic new bitcoin bitcoin презентация япония bitcoin транзакции ethereum андроид bitcoin ethereum валюта создать bitcoin security bitcoin connect bitcoin сколько bitcoin 0 bitcoin bitcoin страна bitcoin check kinolix bitcoin bitcoin blockstream bitcoin conveyor bitcoin knots cryptocurrency trading bitcoin hardfork 600 bitcoin pos ethereum bitcoin хешрейт bitcoin mac
hacking bitcoin accepts bitcoin добыча monero ethereum serpent платформу ethereum iso bitcoin
ethereum course bitcoin india bitcoin film keyhunter bitcoin 0 bitcoin bitcoin weekly bitcoin hacking ethereum stats удвоитель bitcoin форк bitcoin bitcoin проект прогнозы bitcoin epay bitcoin
bitcoin crush взломать bitcoin лотереи bitcoin ethereum прогнозы
bitcoin 10 torrent bitcoin gadget bitcoin bitcoin openssl
air bitcoin cryptocurrency tech amazon bitcoin bitcoin galaxy робот bitcoin amazon bitcoin bitcoin rus
importprivkey bitcoin avto bitcoin будущее ethereum
bitcoin plugin rx560 monero
monero кран strategy bitcoin telegram bitcoin bitcoin yandex buy bitcoin checker bitcoin шифрование bitcoin calc bitcoin
обвал ethereum
bitcoin завести ico ethereum cryptocurrency trading bitcoin loan cpa bitcoin bitcoin hyip
bitcoin games registration bitcoin bitcoin p2p accepts bitcoin bitcoin лохотрон trader bitcoin direct bitcoin стоимость bitcoin ethereum rotator ethereum dark ethereum хардфорк bitcoin ukraine 16 bitcoin
cubits bitcoin payable ethereum arbitrage cryptocurrency bitcoin etherium bitcoin code кости bitcoin avatrade bitcoin bitcoin second bitcoin калькулятор bitcoin автоматически usa bitcoin блок bitcoin bitcoin блокчейн bitcoin kz
сети bitcoin bitcoin график bitcoin etf bitcoin background bitcoin analytics bitcoin euro zcash bitcoin bitcoin покупка bitcoin магазины фото bitcoin ethereum client 600 bitcoin sberbank bitcoin 2018 bitcoin ethereum gas bonus bitcoin reklama bitcoin tether скачать падение ethereum ads bitcoin bitcoin skrill bitcoin demo ethereum faucet nya bitcoin конференция bitcoin bitcoin puzzle
is bitcoin explorer ethereum халява bitcoin coinder bitcoin конвектор bitcoin bitcoin биржи
bitcoin kurs bitcoin команды
майн ethereum динамика ethereum crococoin bitcoin кредит bitcoin bitcoin основы bitcoin rbc bitcoin life bitcoin casino bitcoin nodes monero ico ethereum cryptocurrency bitcoin ann таблица bitcoin
создать bitcoin bitcoin kurs bitcoin играть bitcoin virus ethereum pools bitcoin картинки биржи bitcoin
bitcoin trader boxbit bitcoin
monero algorithm bitcoin center bitcoin neteller keystore ethereum
bitcoin trust проекта ethereum bounty bitcoin bitcoin заработок flex bitcoin часы bitcoin monero обменять сложность ethereum bitcoin evolution ubuntu ethereum machine bitcoin doubler bitcoin bitcoin перевод monero faucet bitcoin символ ios bitcoin bitcoin fan
bitcoin тинькофф bitcoin wallpaper майнинг monero bitcoin blockstream
twitter bitcoin
сокращение bitcoin yandex bitcoin hashrate bitcoin minergate bitcoin bitcoin circle
