Ethereum concepts
Smart contracts
Smart contracts are little computer programs that are stored on Ethereum’s blockchain. They can be activated, or run, by funding them with some ETH. For more on smart contracts, see a gentle introduction to smart contracts.
Here’s an example smart contract, taken from Wikipedia:
solidity_gavcoin
Source: https://en.wikipedia.org/wiki/Solidity
In Ethereum you set up a smart contract by creating a new account with some code in it, and uploading it to the Ethereum blockchain in a transaction.
Once a contract has been uploaded, it behaves a bit like a jukebox – when you want to run it you create a transaction containing a payment of ETH to the contract, and possibly supplying some other information if the contract needs it.
Each mining computer will run the smart contract on their computer using their Ethereum Virtual Machine as part of the mining process, and come to a conclusion about the output. In theory, if no one is behaving badly, each computer on the Ethereum network will come to the same conclusion because they are running the same contract code with the same supplied information.
When a block is mined, the winning miner will publish the block to the rest of the network, and the other computers will validate that they get the same result, then add the block to their own blockchains. This is how the state of Ethereum’s blockchain gets updated.
Accounts
In Bitcoin, there is a concept called address where bitcoins are stored – like a bank account number, but for bitcoins. In Ethereum these are commonly called accounts and there are two types:
Accounts that only store ETH – these are similar to Bitcoin addresses and are sometimes known as Externally Owned Accounts (EOAs). You make payments from these accounts by signing transactions with the appropriate private key.
Here’s an example of an account that stores ETH:
https://etherscan.io/address/0x2d7c76202834a11a99576acf2ca95a7e66928ba0
Accounts that store ETH and have code (smart contracts) that can be run – these smart contracts are activated by a transaction sending ETH into it. Once the smart contract has been uploaded, it sits there waiting to be activated.
Here’s an example of an account that has a smart contract:
https://etherscan.io/address/0xcbe1060ee68bc0fed3c00f13d6f110b7eb6434f6#code
Uncles and Orphans: blocks that don’t quite make it
Ethereum’s rate of block generation is much higher than Bitcoin’s (250 blocks per hour on Ethereum vs 6 blocks per hour on Bitcoin). When more blocks get created more quickly, the rate of “block clashes” increases – ie multiple valid blocks can get created at almost the same time, but only one of them can make it into the main chain. The other one “loses”, and the data in them is not considered part of the main ledger, even if the transactions are technically valid.
In Bitcoin these non-mainchain blocks are called orphans or orphaned blocks and they do not form part of the main chain in any way and are never referenced again by any subsequent blocks.
In Ethereum they are called uncles. Uncles can be referenced by a few of the subsequent blocks (see the section on ETH issuance) and although the data in them is not used, the slightly smaller reward for mining them is still valid.
This achieves two important things:
It incentivises miners to mine even though there is a high chance of creating a non-mainchain block (the high speed of block creation results in more orphans or uncles)
It increases the security of the blockchain by acknowledging the energy spent creating the uncle blocks
Gas and Gas Price
When you activate a smart contract, you ask all the miners in the whole network to each individually perform the calculations within it. This costs them time and energy, and Gas is the mechanism by which you pay them for that service.
The payment is a small amount of ETH that the person who wants to run the contract needs to send to the miner to make it work. This is similar to putting a coin in a jukebox.
Payment (in ETH) = Gas amount (in Gas) x Gas price (in ETH/Gas)
Gas amount
The more complex the smart contract (the number and type of computational steps, memory used for storage, etc), then the more Gas the contract requires to run and complete. In the jukebox analogy, the longer or louder the song, then the more you’d need to pay to make it work.
Gas Price
Whereas the amount of Gas to run a contract is fixed for any specific contract, as determined by the complexity of the contract, the Gas Price is specified by the person who wants the contract to run, at the time they request it (a bit like Bitcoin transaction fees). Each miner will look at how generous the gas price is, and will determine whether they want to run the contract as part of the block. If you want miners to run your contract, you offer a high Gas Price. In this way it’s a competitive auction driven by how much someone is willing to pay to have a contract run.
Why Gas?
Making smart contracts cost Gas/ETH/money stops people from activating them willy-nilly, solving problems relating to transaction spam that would happen if running smart contracts were free.
ETH Units
Just like 1 dollar can be split into 100 cents, and 1 BTC can be split into 100,000,000 satoshi, Ethereum too has its own unit naming convention.
The smallest unit is a wei and there are 1,000,000,000,000,000,000 of them per ETH. There are also some other intermediate names: Finney, Szabo, Shannon, Babbage, Ada – all named after people who made significant contributions to fields related to cryptocurrencies or networks.
Wei and Ether are the two most common denominations.
ethereum_units
Smart Contract languages: Solidity / Serpent, LLL
There are three common languages smart contracts are written in, which can be compiled into smart contracts and run on Ethereum Virtual Machines. They are:
Solidity – similar to the language Javascript. This is currently the most popular and functional smart contract scripting language.
Serpent – similar to the language Python, and was popular in the early history of Ethereum.
LLL (Lisp Like Language) – similar to Lisp and was only really used in the very early days. It is probably the hardest to write in.
Ethereum software: geth, eth, pyethapp
The official Ethereum clients are all open source – that is you can see the code behind them, and tweak them to make your own versions. The most popular clients are:
geth (written in a language called Go) https://github.com/ethereum/go-ethereum
eth (written in C++) https://github.com/ethereum/*****p-ethereum
pyethapp (written in Python) https://github.com/ethereum/pyethapp
These are all command-line based programs (think green text on black backgrounds) and so additional software can be used for a nicer graphical interface. Currently the official and most popular graphical one is Mist (https://github.com/ethereum/mist), which runs on top of geth or eth.
So, geth/eth does the nasty background stuff, and Mist is the pretty screen on top.
bitcoin окупаемость tether usd ethereum новости контракты ethereum ethereum клиент supernova ethereum bitcoin крах monero bitcoin компьютер bitcoin хардфорк tether программа bitcoin компьютер bitcoin play bitcoin waves NEM bitcoin china падение ethereum ethereum course bitcoin spinner machine bitcoin bitcoin обменник
bitcoin bittorrent
tp tether компьютер bitcoin bitcoin etf bitcoin converter eobot bitcoin bitcoin ecdsa ethereum *****u bitcoin отследить tether coin bitcoin количество bitcoin rates bitcoin покер ethereum получить компиляция bitcoin tether chvrches отзывы ethereum bitcoin минфин bitcoin check monero обменять ethereum статистика python bitcoin best bitcoin kran bitcoin акции ethereum Beyond the exchange rate fluctuations impacting profit and loss, there are other benefits and risks to consider before trading forex with bitcoin.tabtrader bitcoin This Coinbase Holiday Deal is special - you can now earn up to $132 by learning about crypto. You can both gain knowledge %trump2% earn money with Coinbase!moneybox bitcoin обменять ethereum ava bitcoin 500000 bitcoin кошелька bitcoin monero ico hd7850 monero ethereum курсы
Why does the dollar have value?config bitcoin рынок bitcoin blockchain ethereum ethereum russia by bitcoin clicks bitcoin life bitcoin
casino bitcoin alpha bitcoin transactions bitcoin 0 bitcoin monero bitcointalk bitcoin people wallet tether подтверждение bitcoin обмен tether ethereum покупка рубли bitcoin bitcoin hesaplama As a decentralized store of value, it is most natural to consider Bitcoin's market size relative tohalf bitcoin swarm ethereum bitcoin best roll bitcoin bitcoin hub
bitcoin card bitcoin maps майнер monero ethereum coin bitcoin проблемы
birds bitcoin ubuntu bitcoin payoneer bitcoin обвал ethereum бизнес bitcoin график monero
drip bitcoin monero news
bitcoin анимация dash cryptocurrency
bitcoin click While bitcoin is seeing increasing use by individuals and organizations as a virtual currency, the Ripple payment system is more popular among banks. RippleNet is a consortium of more than 200 financial institutions based in more than 40 countries, allowing for the easy facilitation of cross-border payments. The Ripple network continues to see growth among financial institutions, an area in which it is ahead of many of its competitors in the digital currency space.7Such a shared system of record can change the way disparate organizations work together.2011–2012Monero mining can be performed on a standard computer and does not need any specific hardware such as the application-specific integrated circuits (ASICs). An ASIC is a costly form of hardware that is commonly used to mine cryptocurrencies like Bitcoin. Instead, you can use the *****U or GPU of your own computer to mine the currency. A full list of hardware that can be used is available on the Monero website. Users can also install certain software, which may cost a developer fee.7ethereum клиент bitcoin habr casper ethereum ethereum wallet up bitcoin blog bitcoin bitcoin development торги bitcoin bitcoin buying
foto bitcoin day bitcoin takara bitcoin pizza bitcoin bitcoin best bitcoin майнер bitcoin mine bitcoin рубль
bitcoin microsoft If Facebook’s network/servers were decentralized, there would be no central point for a hacker to attack. In a decentralized network, the server is built and maintained by a collection of computers that are owned by many different people/companies instead of being at a central point.bitcoin debian bitcoin vps calculator bitcoin bear bitcoin
monero прогноз bitcoin today bitcoin red resilient peer-to-peer networksWhile large miners can theoretically initiate attacks that bends the consensus history to their likings, they also risk tipping off the market to their attack, causing a sudden collapse of the token price. Such a price collapse would render the miner’s hardware investment worthless, along with any previously-earned coins held long. In the case where manufacturing is highly concentrated, clandestine 51 percent attacks are easier to achieve.block bitcoin лотереи bitcoin bitcoin motherboard робот bitcoin bitcoin golden bitcoin okpay accepts bitcoin mixer bitcoin bitcoin статистика bcc bitcoin ethereum github bitcoin talk ethereum падение bitcoin satoshi ethereum frontier bitcoin терминалы reddit cryptocurrency bitcoin комиссия bitcoin buying monero калькулятор отзыв bitcoin bounty bitcoin coins bitcoin lamborghini bitcoin monero кран bitcoin genesis bitcoin tor lazy bitcoin
eth bitcoin сайте bitcoin value bitcoin bitcoin автомат bitcoin работа flypool monero bitcoin auction bitcoin rt bitcoin linux cryptonight monero loan bitcoin
get bitcoin
bitcoin 1000 bitcoin crash bitcoin blocks криптовалюта ethereum roboforex bitcoin
nvidia monero bitcoin blocks
tera bitcoin kran bitcoin ставки bitcoin tether скачать
ethereum проект bitcoin click ethereum ico bitcoin покер 1000 bitcoin bitcoin hack Before you dive into bitcoin mining you should come up with a plan to make it profitable. Some things you have to consider when mining:Bitcoin market priceethereum mining bitcoin 2048 go bitcoin
bitcoin аналоги ethereum бесплатно bitcoin masternode bitcoin net monero кран simple bitcoin эпоха ethereum форум bitcoin bitcoin farm пожертвование bitcoin майнить monero time bitcoin kong bitcoin
bitcoin live кликер bitcoin decred cryptocurrency ethereum проект bitcoin database падение ethereum kurs bitcoin обзор bitcoin bitcoin монета up bitcoin bitcoin продам форк ethereum bitcoin 2020 bitcoin оборот
cryptocurrency gold You can enhance your bitcoin hash rate by adding graphics hardware to your desktop computer. Graphics cards feature graphical processing units (GPUs). These are designed for heavy mathematical lifting so they can calculate all the complex polygons needed in high-end video games. This makes them particularly good at the Secure Hash Algorithm (SHA) hashing mathematics necessary to solve transaction blocks.blocks bitcoin phoenix bitcoin 9. Tether (USDT)bitcoin вирус webmoney bitcoin 0 bitcoin bitcoin будущее cryptocurrency wallets таблица bitcoin обсуждение bitcoin business bitcoin bitcoin ann half bitcoin
bitcoin shops биткоин bitcoin bitcoin зебра panda bitcoin bitcoin tm doubler bitcoin bitcoin москва bitcoin пул фермы bitcoin bitcoin nodes bitcoin hd arbitrage cryptocurrency фермы bitcoin ethereum пул bitcoin ann ethereum forks elysium bitcoin bitcoin golden
монета ethereum bitcoin greenaddress добыча bitcoin bitcoin arbitrage ethereum статистика ethereum инвестинг bitcoin значок
putin bitcoin ethereum geth erc20 ethereum bitcoin смесители bank bitcoin store bitcoin bitcoin миксеры ethereum прогноз bitcoin зарабатывать polkadot ico trading bitcoin bitcoin keys bitcoin s monero gui
ethereum логотип ethereum проблемы phoenix bitcoin bitcoin main bear bitcoin bitcoin x2 bitcoin monkey monero купить shot bitcoin ethereum контракт карты bitcoin работа bitcoin bitcoin wsj bitcoin валюта cryptocurrency arbitrage bitcoin solo bitcoin проблемы bitcoin instagram кошелька bitcoin x2 bitcoin ethereum алгоритм
download bitcoin bitcoin майнеры курс bitcoin лохотрон bitcoin отзывы ethereum bitcoin news cryptocurrency mining кошелек tether average bitcoin bitcoin 4 ethereum microsoft bitcoin co bitcoin обсуждение usb bitcoin bitcoin fpga bitcoin блоки bitcoin 2x bitcoin вконтакте bitcoin calc 2.1 Ring confidential transactions (RingCT)node bitcoin bitcoin png transaction bitcoin
ethereum calculator
my ethereum bitcoin passphrase multiply bitcoin algorithm bitcoin What makes Cyptocurrencies special?bitcoin кошельки майнер bitcoin
адреса bitcoin mmm bitcoin vector bitcoin bitcoin игры bitcoin value bitcoin адреса bitcoin motherboard майнинг bitcoin
ltd bitcoin ico monero bitcoin казино bitcoin club взлом bitcoin bitcoin yandex вики bitcoin golden bitcoin bitcoin обучение bitcoin nodes production cryptocurrency bitcoin analytics bitcoin перевод bitcoin автоматически ethereum покупка difficulty bitcoin tether usb bitcoin fork
bitcoin инструкция pull bitcoin total cryptocurrency boxbit bitcoin ethereum contracts ethereum supernova взлом bitcoin контракты ethereum bitcoin anonymous
Should you buy cryptocurrency?купить ethereum bitcoin скачать ethereum обменять bitcoin добыть ethereum пулы bitcoin bounty ethereum serpent bitcoin purse ethereum io bitcoin мониторинг okpay bitcoin взломать bitcoin bitcoin xl big bitcoin asics bitcoin
monero график bitcoin аналитика bye bitcoin
часы bitcoin minergate bitcoin
monero windows Why is it needed?карты bitcoin ethereum цена monero криптовалюта
bitcoin упал цена ethereum bitcoin spinner bitcoin c supernova ethereum the ethereum кости bitcoin bitcoin swiss bitcoin зарегистрироваться donate bitcoin
The insurance industry covers practically everything on Planet Earth. Whether it’s your home, car, pet, health, holiday or phone — if it has value, it can be insured!monero форум geth ethereum space bitcoin bitcoin кошелька bitcoin депозит
bounty bitcoin 1 monero bitcoin минфин ethereum usd abi ethereum trade cryptocurrency ethereum block bitrix bitcoin алгоритм ethereum amazon bitcoin bitcoin продать bitcoin история tether yota strong, specialized altcoins as 'runners up.'bitcoin sportsbook продать ethereum приложение bitcoin java bitcoin *****p ethereum
криптовалюту bitcoin регистрация bitcoin bitcoin список перспектива bitcoin mindgate bitcoin
bitcoin вебмани ethereum логотип
обменник bitcoin bitcoin metal bitcoin автоматически bitcoin best raiden ethereum bot bitcoin bitcoin trading free bitcoin биржа bitcoin создатель bitcoin bitcoin hack ethereum алгоритм cryptocurrency ethereum
монета ethereum ethereum википедия ethereum btc bitcoin ann bitcoin сеть bitcoin billionaire е bitcoin bitcoin qr The plan is to increase throughput by splitting up the workload into many blockchains running in parallel (referred to as sharding) and then having them all share a common consensus proof of stake blockchain, so that to maliciously tamper with one chain would require that one tamper with the common consensus, which would cost the attacker far more money than they could ever gain from the attack.The UK-based Provenance offers supply chain auditing for a range of consumer goods. Making use of the Ethereum blockchain, a Provenance pilot project ensures that fish sold in Sushi restaurants in Japan have been sustainably harvested by its suppliers in Indonesia.Ethereum blocksbitcoin википедия bitcoin income bitcoin it bitcoin обзор flex bitcoin ethereum blockchain ethereum капитализация
bitcoin block bitcoin blog zcash bitcoin bitcoin конвертер monero новости tether yota bitcoin cudaminer cryptocurrency magazine bitcoin книга delphi bitcoin bitcoin аккаунт trade bitcoin wiki ethereum bitcoin продам
Create a new transaction on the online computer and save it on an USB key.bitcoin суть bitcoin best bitcoin kurs
ethereum контракт bitcoin создать equihash bitcoin робот bitcoin торги bitcoin
bitcoin кран bcc bitcoin mist ethereum ethereum stats cryptonight monero bitcoin avalon
bitcoin биткоин us bitcoin c bitcoin withdraw bitcoin покупка bitcoin bitcoin bloomberg
bitcoin развод пример bitcoin wikipedia bitcoin charts bitcoin bitcoin spinner apk tether bitcoin пул bitcoin mainer ethereum myetherwallet bitcoin 3 simple bitcoin
bitcoin poker 22 bitcoin ethereum стоимость bitcoin работа bitcoin delphi bitcoin database раздача bitcoin bitcoin journal купить tether bitcoin игры bitcoin card accepts bitcoin masternode bitcoin bitcoin 123 bitcoin описание ethereum calculator xapo bitcoin бесплатный bitcoin android tether
андроид bitcoin
wikileaks bitcoin bitcoin information
bitcoin symbol история ethereum bitcoin ethereum Talking about losing cryptocurrencies, you wouldn't want this to happen just because you chose an insecure wallet. That being said, if you decide to make a long-term investment, it's recommended to get a hardware wallet, such as Ledger Nano S and Trezor Model T.monero usd bitcoin проверить bitcoin arbitrage free bitcoin bitcoin рынок пулы monero бот bitcoin bitcoin cli casino bitcoin
bitcoin математика bitcoin scam bitcoin hacker
sha256 bitcoin cryptocurrency
сборщик bitcoin bitcoin wallet bitcoin payment bitcoin коллектор bitcoin заработать
хешрейт ethereum bitcoin pay bitcoin fpga calc bitcoin bitcoin easy ethereum обменять математика bitcoin
playstation bitcoin foto bitcoin bitcoin magazin tether отзывы
bitcoin rt основатель ethereum bitcoin разделился bitcoin film transactions bitcoin monero майнить bitcoin авито ethereum покупка
bitcoin group Freedom of inquirybitcoin бесплатно exchange cryptocurrency planet bitcoin bitcoin котировки
рубли bitcoin bitcoin блокчейн planet bitcoin счет bitcoin обменники ethereum лучшие bitcoin bitcoin rpg bitcoin bitrix транзакции monero ethereum gas
bitcoin forecast boom bitcoin создатель bitcoin bitcoin перевод bitcoin презентация bitcointalk bitcoin android tether новости bitcoin bitcoin metal bitcoin торговля кошельки ethereum market bitcoin forum bitcoin сложность monero tether provisioning key bitcoin криптовалюту bitcoin
tether обменник bitcoin в monero вывод ethereum продам эфириум ethereum ethereum ротаторы bitcoin ваучер bitcoin converter putin bitcoin ethereum бесплатно bitcoin цена
trading bitcoin bitcoin подтверждение bitcoin api bitcoin ishlash bitcoin миллионер купить bitcoin forum cryptocurrency ethereum investing EthereumWith CMC Markets, you trade litecoin via a spread bet or contract for difference (CFD) account. This allows you to speculate on its price movements without owning the actual cryptocurrency. You aren’t taking ownership of litecoin. Instead, you’re opening a position which will increase or decrease in value depending on litecoin’s price movement against the dollar.monero faucet кошельки ethereum
in tranches over several months. bitcoin calc покупка ethereum bitcoin goldman bitcoin стратегия panda bitcoin bitcoin код collector bitcoin
криптовалюта tether air bitcoin хабрахабр bitcoin
bitcoin rigs bitcoin loto
bitcoin страна
bitcoin life bitcoin рублей технология bitcoin лохотрон bitcoin On 12 September 2017, Jamie Dimon, CEO of JP Morgan Chase, called bitcoin a 'fraud' and said he would fire anyone in his firm caught trading it. Zero Hedge claimed that the same day Dimon made his statement, JP Morgan also purchased a large amount of bitcoins for its clients.Litecoin Pricenetwork itself requires minimal structure. Messages are broadcast on a best effortbitcoin live ethereum faucets bitcoin news
trade bitcoin ethereum install ethereum получить bitcoin gold
bitcoin com курс bitcoin bitcoin вклады escrow bitcoin bitcoin capital scrypt bitcoin 1 ethereum fields bitcoin bitcoin принимаем bitcoin оборот bitcoin статистика antminer bitcoin bitcoin compare bitcoin сайт bitcoin завести виталик ethereum пирамида bitcoin бесплатный bitcoin bitcoin заработок trader bitcoin ad bitcoin bitcoin доходность metal bitcoin bitcoin asic ethereum io bitcoin ферма проблемы bitcoin live bitcoin bitcoin avalon bitcoin стоимость bitcoin nodes ethereum токены ethereum supernova bitcoin страна bitcoin счет minecraft bitcoin monero dwarfpool bitcoin миллионеры However, you have to be very careful about which cloud mining company you use. There are lots of scammers that will take your money even though they don’t have a rig. Do lots of research before you send any money.bitcoin чат yandex bitcoin bitcoin metal forum bitcoin динамика ethereum ethereum shares статистика ethereum мавроди bitcoin bitcoin видеокарты
bitcoin видео by bitcoin
bitcoin видеокарты unconfirmed bitcoin bitcoin debian bitcoin перевод casper ethereum it bitcoin tether обменник mini bitcoin кран ethereum trade cryptocurrency hashrate bitcoin халява bitcoin ubuntu bitcoin андроид bitcoin ethereum доходность bitcoin investing bitcoin видеокарта dao ethereum bitcoin signals bitcoin pool bitcoin froggy simple bitcoin bitcoin play technology adopted by the mainstream.bitcoin генератор adbc bitcoin
adbc bitcoin
ico monero accepts bitcoin 99 bitcoin статистика ethereum форумы bitcoin ethereum mist bitcoin books ethereum crane legal bitcoin bitcoin x2 bitcoin joker ethereum price ethereum 4pda monero биржи ethereum википедия bitcoin прогноз обвал ethereum value bitcoin bitcoin trezor bitcoin приложение polkadot cryptocurrency faucet 2016 bitcoin polkadot su bitcoin video bitcoin tor добыча bitcoin bitcoin код stats ethereum monero кран ethereum dao iota cryptocurrency bitcoin china
ethereum info bank bitcoin It might not be perfect, but it’s pretty damn good, and this is why people are using it as money, despite the fact that nobody is forced to.bitcoin knots bitcoin map bitcoin cost ethereum пул партнерка bitcoin продать ethereum
bitcoin ocean
bitcoin qr bitcoin конвертер tether пополнение blitz bitcoin One of the nice things about GPUs is that they also leave your options open. Unlike other options discussed later, these units can be used with cryptocurrencies other than bitcoin. Litecoin, for example, uses a different proof of work algorithm to bitcoin, called Scrypt. This has been optimized to be friendly to *****Us and GPUs, making them a good option for GPU miners who want to switch between different currencies.click bitcoin bitcoin магазины пулы bitcoin
bitcoin pos ethereum course bitcoin google monero биржи kaspersky bitcoin galaxy bitcoin bitcoin transaction
server bitcoin bitcoin qr coin bitcoin bitcoin пополнение bitcoin cost вывод monero monero coin инвестирование bitcoin bitcoin market bitcoin уязвимости
50 bitcoin lamborghini bitcoin kurs bitcoin разработчик ethereum bitcoin birds bitcoin карты mempool bitcoin bitcoin login bitcoin weekly
верификация tether
pools bitcoin bitcoin биржа ethereum токены ethereum game bitcoin genesis bitcoin obmen консультации bitcoin bitcoin yen 10 bitcoin bitcoin js bitcoin config top cryptocurrency bitcoin land legal bitcoin bitcoin обменять банкомат bitcoin ico monero Far from being a novelty or prototype, Bitcoin has shown itself to be a threatening alternative to present-day organizational conventions and to the large commercial businesses that rely on them. It may spur a radical unbundling of corporate business as it lowers transaction costs for the institutions that adopt it. While the effects of such unbundling are unpredictable, value seems most likely to accumulate in cryptocurrency services businesses; in hardware makers and operators that rent computing resources to the network; and in building businesses on the layer 2 networks.4. What is a Blockchain Wallet?bitcoin base bitcoin регистрация bitcoin скрипт withdraw bitcoin carding bitcoin
форки bitcoin котировки bitcoin bitcoin instant bitcoin banking
bitcoin fire ethereum настройка testnet bitcoin bitcoin skrill topfan bitcoin net bitcoin
