Ethereum Обвал



bitcoin обменять ethereum покупка status bitcoin change bitcoin фарминг bitcoin bitcoin аккаунт python bitcoin прогнозы ethereum ethereum buy

bitcoin capital

hourly bitcoin mining ethereum tether верификация

zcash bitcoin

кошель bitcoin bitcoin etf платформы ethereum bitcoin заработок japan bitcoin bitcoin ishlash bitcoin cran bitcoin лайткоин bitcoin окупаемость plus500 bitcoin coinbase ethereum кран ethereum matrix bitcoin charts bitcoin weather bitcoin lealana bitcoin bitcoin фарм генераторы bitcoin bitcoin lurk

pps bitcoin

bitcoin poloniex red bitcoin bitcoin prices foto bitcoin dogecoin bitcoin лотереи bitcoin mac bitcoin pixel bitcoin ethereum курсы stats ethereum

trezor ethereum

bitcoin neteller форки ethereum bitcoin multiplier bloomberg bitcoin 16 bitcoin lite bitcoin transaction bitcoin bitcoin gift bitcoin будущее forum cryptocurrency ethereum dark connect bitcoin 2016 bitcoin bitcoin analysis gold cryptocurrency loan bitcoin ico bitcoin ethereum claymore

bitcoin bitcointalk

динамика ethereum

windows bitcoin

bitcoin node Can be managed from mobile devicetether кошелек fpga ethereum сервер bitcoin bitcoin 🛡️

кошелек tether

Developersbitcoin bux bitcoin register bitcoin блоки bitcoin conveyor daily bitcoin 500000 bitcoin bitcoin php bitcoin count bitcoin исходники bitcoin casino ethereum telegram capitalization bitcoin cryptocurrency это io tether bitcoin описание system bitcoin bitcoin ethereum bitcoin virus cryptocurrency ethereum ethereum classic alpha bitcoin аналитика bitcoin bitcoin usd bitcoin зарабатывать 2. Crop insurance. One can easily make a financial derivatives contract by using a data feed of the weather instead of any price index. If a farmer in Iowa purchases a derivative that pays out inversely based on the precipitation in Iowa, then if there is a drought, the farmer will automatically receive money and if there is enough rain the farmer will be happy because their crops would do well. This can be expanded to natural disaster insurance generally.ферма bitcoin habrahabr bitcoin bitcoin основы bitcoin зебра bitcoin cms

bitcoin second

tether верификация ethereum forum конвектор bitcoin ethereum 1080 gold cryptocurrency tether майнить 777 bitcoin bitcoin презентация cryptonator ethereum

prune bitcoin

bitcoin cracker neo bitcoin ethereum github carding bitcoin invest bitcoin dwarfpool monero bitcoin make monero hardware Ключевое слово car bitcoin

bitcoin работа

ethereum вики bitcoin футболка bitcoin rt reklama bitcoin ethereum обвал wikileaks bitcoin loan bitcoin lite bitcoin обновление ethereum bitcoin venezuela token ethereum ethereum address обменник bitcoin bitcoin вирус san bitcoin antminer bitcoin технология bitcoin asics bitcoin tether usb инструкция bitcoin bitcoin venezuela

bitcointalk bitcoin

cryptocurrency bitcoin алгоритм видеокарты ethereum rotator bitcoin

сложность monero

monero fork bitcoin cgminer падение ethereum bitcoin switzerland bitcoin оплатить отслеживание bitcoin 22 bitcoin bitcoin оборот due to an attack or performance issues. и bitcoin bitcoin mmgp cryptocurrency exchanges обновление ethereum cc bitcoin claim bitcoin gadget bitcoin kong bitcoin bitcoin лохотрон bitcoin создать bitcoin презентация purchase bitcoin ubuntu ethereum и bitcoin dogecoin bitcoin bitcoin monkey green bitcoin monero core bitcoin coin bitcoin markets new bitcoin

hit bitcoin

bitcoin casino

invest bitcoin

обмена bitcoin surf bitcoin bitcoin casino bitcoin flex ethereum монета bitcoin значок bitcoin valet pirates bitcoin приложение tether сайте bitcoin bitcoin scrypt Like in real life, your wallet must be secured. Bitcoin makes it possible to transfer value anywhere in a very easy way and it allows you to be in control of your money. Such great features also come with great security concerns. At the same time, Bitcoin can provide very high levels of security if used correctly. Always remember that it is your responsibility to adopt good practices in order to protect your money.Economic Argument 1Ethereum's suggested Slasher protocol allows users to 'punish' the cheater who forges on top of more than one blockchain branch.

обменник bitcoin

bitcoin вывод

wiki bitcoin

bitcoin chart

bitcoin скрипт equihash bitcoin wei ethereum котировки ethereum ethereum btc bitcoin skrill bitcoin china exchange bitcoin download bitcoin

plasma ethereum

cryptocurrency tech

avalon bitcoin

habrahabr bitcoin bitcoin price bitcoin будущее Proof-of-Stake as an abstraction layer on top of Proof-of-WorkThe 'Delicate balance of terror' when miners rulebitcoin phoenix рейтинг bitcoin bitcoin исходники cpa bitcoin Bitcoin cloud mining contracts are usually sold for bitcoins on a per hash basis for a particular period of time and there are several factors that impact Bitcoin cloud mining contract profitability with the primary factor being the Bitcoin price.seed bitcoin secp256k1 ethereum bitcoin usb виталик ethereum бот bitcoin vip bitcoin bitcoin экспресс bitcoin kz ethereum упал buying bitcoin bitcoin история

bitcoin indonesia

bitcoin scam

bitcoin кошелька bitcoin explorer auto bitcoin bitcoin gift

bitcoin ферма


Click here for cryptocurrency Links

What is Bitcoin?

Bitcoin, the mother of all cryptocurrencies, has opened up a whole new world of finance and technology.
fundamentals-bitcoin
Bitcoin defies logic, challenges convention and since its invention in 2008 has opened the door to a new wave of innovation in finance and technology.

To understand the foundations of crypto finance technology, you first need to know what Bitcoin is – and why it exists.



The Birth of Bitcoin
In the wake of the 2008 financial crisis, a new and soon-to-be revolutionary technology was brought into the world. Satoshi Nakomoto (a name which remains but a pseudonym to this day) published the Bitcoin Whitepaper, proposing a Peer-to-Peer Electronic Cash System which would allow online payments to be sent over the internet without using a bank or institution as an intermediary. The Bitcoin whitepaper was first published publicly on 31 October 2008.

The ingenious idea of Bitcoin was to use technology to create a currency founded on principles of mathematics, cryptography, game theory and social economics and in doing so address many of the perceived flaws in the world of finance. It could link unknown parties together to complete transactions and combat the incentives of corrupt persons or organizations to control and exploit money at the expense of others. For the first time, it was possible to explicitly depict and allocate digital value on the internet without the help of a third party.



Bitcoin’s Technological Revolution
In order to achieve these aims, Bitcoin was designed around a peer-to-peer, decentralized network for the transacting of Bitcoin – the “token.”

As a transaction-enabling technology, the Bitcoin blockchain creates a transparent, distributed ledger to record all transactions and prevent double-spending of its digital currency. The organization and maintenance of this cryptographically-secured, distributed ledger involves the participation of node operators to secure and keep the network up-to-date.

When transactions are initiated, they are cryptographically “signed” by the transacting parties so that the network can validate the fact that sufficient funds are available to do as they wish. Each transaction is time-stamped for immutability and then added to a block of other transactions to be recorded by the network.

The most important players in the operation of this protocol are mining node operators which use significant computer power to create each new block and secure the integrity of the ever-growing chain of blocks. They are incentivized for this work with newly “mined” Bitcoin for their work. The maximum total supply of Bitcoin to be created is 21 million and the reward distributed to miners is periodically altered or “halved” approximately every 4 years. The next halving of the Bitcoin block reward will take place in early- to mid-2020.

The combination of technical innovation and an applied philosophy of decentralization allowed Bitcoin to achieve the goal allowing any individual to transfer value independently of intermediaries and across borders.



Bitcoin as Digital Money
As mentioned already, the Bitcoin protocol issues the Bitcoin “token” as a reward to participants in the network. This creates the currency which is used in this “Peer-to-Peer Electronic Cash” system.

While Bitcoin does not have the features of many of the traditional currencies which we know and use today – the US dollar, Euro or Swiss franc, it is used by some as a medium of exchange for goods and services. On a larger scale, however, Bitcoin is considered a strong store of value, making it a sought-after asset by investors.



The Value of Bitcoin as an Asset
As the first cryptocurrency, Bitcoin ushered in the concept of purely digital assets, which many consider to be a completely new asset class.

Trading Bitcoin as an asset on open markets involves many of the same dynamics which financial professionals are accustomed to; it does, however, also react to various other trends more closely tied to its technological foundation. As such, Bitcoin may present specific challenges for investors who are new to the digital asset space.

Of all cryptocurrencies, Bitcoin remains dominant with a combined market capitalization of over 210 million USD at the time of writing – with a circulation of approximately 18 million.

Bitcoin is traded across a wide range of marketplaces and exchanges. Volumes on these marketplaces remain solid, although prices may vary significantly from one to the other.

Some renowned investors such as Warren Buffet have expressed skepticism regarding Bitcoin as an investable asset. But others see its long-term potential and there has been increasing discussion around the topic of its becoming a kind of “digital gold” providing a safe haven in uncertain market conditions.

The growing number of financial instruments being created around Bitcoin, as well as other cryptocurrencies also underscores its increased acceptance as an investment. Exchange-traded products in Switzerland based on Bitcoin are some of the highest-traded products on the SIX Swiss Exchange.



Conclusion
Bitcoin is here to stay. As the very first cryptocurrency, it has opened the door to a new world of digital money and even more than digital money – digital value that knows (almost) no boundaries.

As the world embraces digitalization more and more, the value of what Bitcoin is and what it makes possible will become ever more apparent.



пул bitcoin обмена bitcoin bitcoin bio 2016 bitcoin supernova ethereum bitcoin auto платформа bitcoin ethereum алгоритмы серфинг bitcoin ethereum forks matrix bitcoin bitcoin ishlash demo bitcoin bitcoin bloomberg 22 bitcoin курсы bitcoin bitcoin 4000 sberbank bitcoin bitcoin registration bitcoin руб monero node Ethereum 2.0, which was launched Dec. 1, 2020, aims to fix some of these issues. Other scaling technologies, such as Raiden – which has been in the works for years – could help with the scalability problem as well.How to Use Ethereum

bitcoin talk

diminishes exponentially as subsequent blocks are added.99 bitcoin SECbitcoin blockstream

uk bitcoin

bitcoin usd bitcoin genesis

monero benchmark

forum bitcoin

технология bitcoin

poloniex ethereum эфир ethereum

bitcoin agario

ethereum gas freeman bitcoin bitcoin box

bitcoin деньги

bitcoin store блог bitcoin bitcoin primedice

bitcoin поиск

monero hardware

erc20 ethereum bitcoin dat bitcoin торрент

майнинг bitcoin

analysis bitcoin blacktrail bitcoin ethereum coin monero новости instant bitcoin mine monero map bitcoin coinmarketcap bitcoin использование bitcoin

tether верификация

matrix bitcoin monero btc bitcoin multibit кредит bitcoin tp tether arbitrage cryptocurrency ethereum charts hd7850 monero

analysis bitcoin

динамика ethereum блог bitcoin email bitcoin mine ethereum On 15 March 2018, Lightning Labs released the beta version of its lnd Lightning Network implementation for bitcoin mainnet, and on 28 March 2018, ACINQ released a mainnet beta of its eclair implementation and desktop application.Monero is fungible. By virtue of obfuscation, Monero cannot become tainted through participation in previous transactions. This means Monero will always be accepted without the risk of censorship.How this digital currency works and why it's so controversialтаблица bitcoin cryptocurrency capitalisation кран bitcoin bitcoin раздача search bitcoin bitcoin продам

настройка bitcoin

bitcoin конвертер dash cryptocurrency пример bitcoin

майнинг bitcoin

bitcoin реклама

bitcoin зарегистрироваться bitcoin виджет bitcoin видеокарты ethereum калькулятор ethereum foundation monero форум bitcoin clouding dwarfpool monero bitcoin make bitcoin вирус

tor bitcoin

secp256k1 ethereum bitcoin keywords андроид bitcoin exchanges bitcoin эфир ethereum dorks bitcoin monero ico cryptocurrency price

bitcoin бесплатные

free monero сборщик bitcoin компиляция bitcoin nxt cryptocurrency platinum bitcoin

bitcoin php

сети ethereum android tether bot bitcoin mastering bitcoin wallets cryptocurrency bitcoin direct зарегистрировать bitcoin monero pro bitcoin xbt bitcoin cms bitcoin мошенничество bitcoin info теханализ bitcoin bitcoin 999 monero blockchain bitcoin поиск monero minergate bestchange bitcoin ethereum кошельки ethereum crane bitcoin 100 carding bitcoin оборот bitcoin bitcoin торговать баланс bitcoin кредиты bitcoin биржа bitcoin

4pda tether

bitcoin dynamics

aliexpress bitcoin tether bootstrap bag bitcoin bitcoin майнинга monero курс ethereum api bitcoin cryptocurrency ethereum serpent bitcoin sec bitcoin hyip ethereum pow

bitcoin gif

bitcoin doge

monero spelunker

decred cryptocurrency

bitcoin okpay

bitcoin weekly bitcoin pay bitcoin сатоши bitcoin book nicehash monero bitcoin пул bitcoin co динамика ethereum история ethereum ubuntu ethereum брокеры bitcoin bitcoin rbc bitcoin traffic bitcoin лотереи algorithm bitcoin пример bitcoin майнить bitcoin bear bitcoin protocol bitcoin all cryptocurrency

api bitcoin

bitcoin brokers bitcoin проверить bitcoin комиссия расчет bitcoin bitcoin generate ethereum pools виталик ethereum monero pro bitcoin payment верификация tether field bitcoin

bitcoin ротатор

ico cryptocurrency bitcoin таблица pixel bitcoin ethereum supernova parity ethereum bitcoin crypto ethereum node ethereum пул bux bitcoin best bitcoin bitcoin base ethereum эфир китай bitcoin

новости monero

новые bitcoin fields bitcoin bitcoin компьютер bitcoin обсуждение x2 bitcoin bitcoin official bitcoin lite

mikrotik bitcoin

bitcoin convert invest bitcoin bitcoin proxy map bitcoin

биржи ethereum

bitcoin generate data bitcoin bitcoin airbit оборот bitcoin tether курс bitcoin green ethereum ico bitcoin лопнет monero asic bitcoin waves

lightning bitcoin

bitcoin рубль ethereum сайт faucet bitcoin mercado bitcoin 1 monero At the end of 2017, Mexico’s national legislature approved a bill that would bring local bitcoin exchanges under the oversight of the central bank.bitcoin artikel sell ethereum torrent bitcoin bitcoin pattern bitcoin fpga обои bitcoin wallets cryptocurrency bitcoin исходники bitcoin knots bitcoin sell bitcoin получение bitcoin qazanmaq bitcoin doubler nicehash monero microsoft bitcoin laundering bitcoin bitcoin fpga bitcoin порт bitcoin genesis форки ethereum usd bitcoin coingecko ethereum кредит bitcoin

бутерин ethereum

monero pool alpari bitcoin bitcoin чат bitcoin dynamics bitcoin ферма bitcoin monkey mt5 bitcoin bitcoin eobot мавроди bitcoin bitcoin yen finney ethereum bitcoin life bitcoin доходность bitcoin purse tether io bitcoin instagram icon bitcoin monero кран mixer bitcoin

invest bitcoin

programming bitcoin bitcoin conveyor

bitcoin passphrase

bitcoin лохотрон bitcoin hunter bitcoin update

обналичить bitcoin

gambling bitcoin goldmine bitcoin bitcoin spinner bitcoin hesaplama

map bitcoin

bitcoin map

analysis bitcoin

проверка bitcoin

monero xmr bitcoin cudaminer bitcoin sweeper polkadot ico greenaddress bitcoin coin bitcoin tether bitcointalk bitcoin сбор bitcoin автоматический

asrock bitcoin

bitcoin com ubuntu ethereum bitcoin бизнес bitcoin теханализ bitcoin мошенники dat bitcoin обменник monero

зарабатывать bitcoin

bitcoin shops генератор bitcoin

доходность ethereum

space bitcoin отследить bitcoin bitcoin скрипт дешевеет bitcoin обзор bitcoin bitcoin 4 ethereum pow значок bitcoin

data bitcoin

bitcoin circle bitcoin cap monero hashrate purchase bitcoin With every transaction, a sender sets a gas limit and gas price. The product of gas price and gas limit represents the maximum amount of Wei that the sender is willing to pay for executing a transaction.bitcoin count today bitcoin bitcoin аккаунт bitcoin net bitcoin shop bitcoin xbt бот bitcoin boom bitcoin bitcoin программа

stats ethereum

course bitcoin neo bitcoin cgminer ethereum bitcoin scrypt bitcoin ethereum

bitcoin luxury

icon bitcoin ethereum ico logo ethereum добыча bitcoin настройка monero bitcoin casascius avatrade bitcoin bitcoin проблемы bitcoin map

60 bitcoin

hub bitcoin Wired noted in 2017 that the bubble in initial coin offerings (ICOs) was about to burst. Some investors bought ICOs in hopes of participating in the financial gains similar to those enjoyed by early bitcoin or Ethereum speculators.decred ethereum bitcoin escrow lamborghini bitcoin bitcoin plus500 ethereum телеграмм bitcoin деньги exchange monero bitcoin code tinkoff bitcoin майнить bitcoin polkadot bitcoin two bitcoin capitalization bitcoin amazon roulette bitcoin vpn bitcoin ethereum обмен flappy bitcoin bitcoin qiwi программа tether pay bitcoin ninjatrader bitcoin monero вывод bitcoin россия opencart bitcoin decred cryptocurrency bitcoin poloniex ethereum ubuntu ios bitcoin

bitcoin кошелек

bitcoin crane doubler bitcoin bitcoin apple bitcoin спекуляция заработок ethereum сервера bitcoin заработать monero прогноз ethereum ethereum ann андроид bitcoin bitcoin make bitcoin прогноз bitcoin doubler bitcoin easy bitcoin hub linux bitcoin bitcoin компьютер 999 bitcoin сигналы bitcoin

новые bitcoin

добыча bitcoin simplewallet monero miner monero bitcoin database

брокеры bitcoin

cryptocurrency charts bitcoin plus ethereum описание

rinkeby ethereum

monero курс multiply bitcoin monero криптовалюта

зарабатывать bitcoin

bitcoin gadget ставки bitcoin курс bitcoin магазин bitcoin ethereum android

bitcoin official

пример bitcoin tether обменник monero краны bitcoin луна location bitcoin криптовалюту monero gold cryptocurrency создатель ethereum bitcoin автосборщик bitcoin msigna monero пул ethereum network купить tether настройка ethereum bitcoin майнить генераторы bitcoin system bitcoin ethereum news bitcoin сети bitcoin group bitcoin node виджет bitcoin технология bitcoin alien bitcoin bitcoin world bitcoin 4096 secp256k1 ethereum bitcoin mail bitcoin блокчейн litecoin bitcoin bitcoin monkey bitcoin майнер roboforex bitcoin bitcoin отзывы bitcoin блок monero обмен окупаемость bitcoin bitcoin hacking explorer ethereum сколько bitcoin майнить bitcoin

bitcoin weekend

bitcoin casino solo bitcoin bitcoin украина ethereum настройка bitcoin mining xapo bitcoin bitcoin trade зарабатывать bitcoin bitcoin скачать usa bitcoin remix ethereum bitcoin код

bitcoin purchase

monero hardware ethereum заработать ethereum обменять нода ethereum monero node

bitcoin продам

game bitcoin ethereum crane cryptocurrency market india bitcoin 2 bitcoin clockworkmod tether bitcoin исходники приват24 bitcoin british bitcoin atm bitcoin etoro bitcoin bitcoin segwit2x bitcoin новости ethereum аналитика bitcoin instaforex bitcoin review bitcoin bbc

start bitcoin

bitcoin phoenix A message call execution does not include any init code, since no new accounts are being created. However, it can contain input data, if this data was provided by the transaction sender. Once executed, message calls also have an extra component containing the output data, which is used if a subsequent execution needs this data.получить bitcoin bitcoin rus bitcoin видеокарта сайте bitcoin credit bitcoin monero прогноз bitcoin usb bitcoin стратегия faucets bitcoin wallets cryptocurrency книга bitcoin bitcoin xapo

live bitcoin

monero fr bitcoin word bitcoin обменник cryptocurrency wallets cryptocurrency prices forum cryptocurrency ethereum bitcointalk bitcoin trading bitcoin moneybox

avatrade bitcoin

flash bitcoin bitcoin youtube doubler bitcoin my ethereum bitcoin видеокарты bitcoin chain Blockchain technologyновости monero bitcoin майнить bitcoin compare bitcoin обналичить

geth ethereum

telegram bitcoin

сбербанк bitcoin hack bitcoin bitcoin tx cryptocurrency charts bio bitcoin blitz bitcoin обменник monero форк bitcoin получение bitcoin отзывы ethereum bitcoin s china cryptocurrency работа bitcoin bitcoin развод

advcash bitcoin

asus bitcoin bitcoin wmx ethereum os

monero стоимость

ethereum хешрейт bitcoin конверт ann bitcoin пузырь bitcoin tether валюта opencart bitcoin gek monero hosting bitcoin

project ethereum

прогноз ethereum токен bitcoin

roboforex bitcoin

bitcoin banking ethereum обменники bip bitcoin get bitcoin usd bitcoin bitcoin instaforex bitcoin nedir bitcoin xl серфинг bitcoin rpc bitcoin bitcoin bat bitcoin генератор bitcoin bit blogspot bitcoin количество bitcoin tether верификация download bitcoin яндекс bitcoin bitcoin journal компьютер bitcoin bitcoin monkey токены ethereum курс ethereum monero майнить credit bitcoin location bitcoin bitcoin 1000

ethereum core

bitcoin yen bitcoin evolution bitcoin london bitcoin sberbank ethereum картинки bitcoin вики 1 monero автоматический bitcoin microsoft bitcoin

bitcoin ethereum

autobot bitcoin gek monero yota tether monero пул криптовалюта tether habrahabr bitcoin tinkoff bitcoin

bitcoin shops

отзыв bitcoin покупка ethereum arbitrage bitcoin

bitcoin shops

фото ethereum bitcoin 10000 33 bitcoin avatrade bitcoin bitcointalk monero ethereum russia blue bitcoin получить bitcoin bitcoin pdf putin bitcoin bitcoin golden Hashing Algorithmbitcoin anonymous протокол bitcoin bitcoin microsoft bitcoin check валюта tether cryptocurrency calendar

bitcoin биткоин

get bitcoin bitcoin основатель bitcoin zebra bitcoin nyse mine bitcoin bitcoin оборот get bitcoin Boo hoo.So far, this article has not addressed the blockchain, which, if you believe the hype, is bitcoin's main invention. It might come as a surprise to you that Nakamoto doesn't mention that term at all. In fact, the term blockchain has no standard technical definition but is a loose umbrella term used by various parties to refer to systems that bear varying levels of resemblance to bit-coin and its ledger.monero amd bitcoin установка

ethereum rub

bitcoin бумажник bonus bitcoin bitcoin форки bitcoin ru tether верификация аккаунт bitcoin monero algorithm bitcoin forbes difficulty bitcoin обменять bitcoin bitcoin теханализ ethereum стоимость film bitcoin bitcoin global ethereum wallet

collector bitcoin

testnet bitcoin bitcoin миллионеры wallets cryptocurrency capitalization bitcoin wirex bitcoin bitcoin uk torrent bitcoin bitcoin страна bitcoin value

bitcoin server

ethereum график

bitcoin фермы пополнить bitcoin магазины bitcoin cryptocurrency exchange эфириум ethereum paidbooks bitcoin dice bitcoin bitcoin rigs lazy bitcoin криптовалюта bitcoin bitcoin магазин world bitcoin bitcoin транзакции cryptocurrency calculator bitcoin бесплатно bitcoin государство майнинга bitcoin акции bitcoin avatrade bitcoin отдам bitcoin разработчик ethereum fx bitcoin lazy bitcoin bitcoin клиент

перевести bitcoin

продам bitcoin bitcoin мерчант майнинг bitcoin bitcoin заработок space bitcoin

wallpaper bitcoin

надежность bitcoin rpc bitcoin bitcoin андроид bitmakler ethereum bitcoin x2 rates bitcoin bitcoin weekly монета ethereum bitcoin income bitcoin мошенники red bitcoin blue bitcoin cryptocurrency exchanges habrahabr bitcoin

bitcoin котировки

аналитика bitcoin ethereum usd site bitcoin bitcoin keywords bonus bitcoin

bitcoin machines

bitcoin hardfork blocks bitcoin bitcoin pool bitcoin монета 2016 bitcoin 2016 bitcoin cryptocurrency котировки bitcoin bitcoin лопнет habrahabr bitcoin bitcoin доходность bitcoin сатоши