The first mention of a product called bitcoin was in August 2008 when two programmers using the names Satoshi Nakamoto and Martti Malmi registered a new domain, bitcoin.org. In October of the same year, Nakamoto released a document, called a white paper, entitled “Bitcoin: A Peer-to-Peer Electronic Cash System.” In the preceding months, Nakamoto and a group of volunteer researchers had proposed different versions of the concept in forums and email threads. It was in 2008 that it all came together.
This paper laid out principles of Bitcoin, an electronic payment system that would eliminate the need for any central authority while ensuring secure, verifiable transactions. In short, the document described a new form of currency, one that allowed for trustless payments on the web – that is, they require a minimal amount or even no trust between parties.
In other words, the system allowed two users who didn’t know or trust each other to exchange money in the same way they could pass cash back and forth. The system also allowed users to confirm messages, transactions and data using a tool called public key encryption, eliminating any need to disclose their identities to transaction partners or third parties. Pseudonymity, in this case, was a byproduct but not a primary feature.
In January 2009, the first bitcoin currency transaction occurred between two computers owned by Nakamoto and the late Hal Finney, a developer and an early cryptocurrency enthusiast.
To this day, no one knows who Satoshi Nakamoto really is. Even a man named Dorian Nakamoto was erroneously named as Bitcoin’s creator by a Newsweek reporter in 2014.
In the end, however, because of the decentralized nature of the platform, it is not considered important to know who Satoshi Nakamoto is.
Bitcoin Up Close
Bitcoins aren’t printed, like dollars or euros – they’re produced by computers all around the world using free software and held electronically in programs called wallets. The smallest unit of a bitcoin is called a satoshi. It is one hundred millionth of a bitcoin (0.00000001). This enables microtransactions that traditional electronic money cannot perform.
Bitcoin, often abbreviated by the ticker symbol BTC, was the first example of what we now call a cryptocurrency. Cryptocurrencies are a growing asset class that shares some characteristics with traditional currencies except they are purely digital, and creation and ownership verification is based on cryptography.
Generally the term “bitcoin” has two possible interpretations. There’s bitcoin the token, which refers to the keys to a unit of the digital currency that users own and trade. A bitcoin token is held in a bitcoin wallet that is identified by a string of numbers and letters such as “bc1q2kw344tthrrshywqnjngu5jj9y9cknm5jluate.” When someone wants to send you bitcoin, that person will send it to your particular, public wallet address, and you will access it via your private keys.
Then there’s Bitcoin the protocol, a distributed ledger that maintains the balances of all token trading. These ledgers are massive files stored on thousands of computers around the world. The network records each transaction onto these ledgers and then propagates them to all of the other ledgers on the network. Once all of the networks agree that they have recorded all of the correct information – including additional data added to a transaction that allows the network to store data immutably – the network permanently confirms the transaction.
Bitcoin can be used to pay for things electronically, if both parties are willing. In that sense it’s like conventional dollars, euros or yen, which can also be traded digitally using ledgers owned by centralized banks. Unlike payment services such as PayPal or credit cards, however, once you send a bitcoin, the transaction is irreversible – it cannot be called back.
That said, bitcoin does not depend on a centralized system of banking. Because each node on the network is owned by a private entity, the entire network is responsible for maintaining the accuracy of the ledger. When you send a bitcoin – or a fraction of a bitcoin – to another person, the entire network takes part.
This process is called decentralization, one of the Bitcoin network’s most important characteristics. No single institution controls the bitcoin network. The protocol is maintained by a group of volunteer coders, and run by an open network of dedicated computers around the world.
Since there is no central validator in this network, users do not need to identify themselves when sending bitcoin to others. When a sender initiates a transaction, the protocol checks all previous transactions to confirm the sender has the necessary bitcoin as well as the authority to send them. Put another way, bitcoin users theoretically operate in semi-anonymity and the network is self-policing, ensuring that bad actors cannot be rewarded.
Bitcoin is also pseudo-anonymous. In practice, each user is identified by the address of his or her wallet, which can be used to track transactions. Law enforcement has also developed methods to identify users if necessary. Most exchanges are required by law to perform identity checks on their customers before they are allowed to buy or sell bitcoin. This means an exchange-assigned wallet address is most likely connected to a particular user. However, cryptocurrency wallets are not limited to exchanges or other online services, and a wallet generated by an anonymous user on a single computer is fairly difficult to trace. Further, every transaction on the network is fully transparent, a fact that concerns some privacy advocates. Ultimately, tracing a bitcoin transaction to a specific person is difficult but not impossible, and any statements describing the “anonymity” of bitcoin are inaccurate.
Since the network is transparent, the progress of a particular transaction is visible to all. Once that transaction is confirmed, it cannot be reversed. This means any transaction on the bitcoin network cannot be tampered with, making it immune to hackers. Most bitcoin hacks happen at the wallet level, with hackers stealing the keys to hoards of bitcoins rather than affecting the Bitcoin protocol itself.
Another attribute of bitcoin that takes away the need for central banks is that its supply is tightly controlled by the underlying algorithm. With fiat currencies (dollars, euros, yen, etc.), central banks can issue as many currency units as they want and can attempt to manipulate a currency’s value relative to others. Holders of the currency, especially citizens with little alternative, bear the cost.
With bitcoin, a small number of new coins trickle out every hour, and will continue to do so at a diminishing rate until a maximum of 21 million has been reached. This makes bitcoin more attractive as an asset: in theory, if demand grows and the supply remains the same, the value will increase.
Generally, the value of bitcoin has risen greatly since its inception, peaking in December 2017 at a price of $19,783.06 (in U.S. dollars). On Nov. 30, 2020, the price briefly rose above that mark to $19,850.11. The actual price of a decentralized asset like bitcoin isn’t strictly defined. Different services and exchanges may quote different prices for bitcoin at any given time, accounted for by discrepancies in asset liquidity, slippage and other factors. CoinDesk uses its own Bitcoin Price Index (BPI), which represents an average of bitcoin prices across leading global exchanges.
Roughly every four years, the amount of bitcoin that miners can earn in the network will be halved, potentially driving up the asset’s price. Such an event is called bitcoin halving (the most recent one happened in May 2020).
исходники bitcoin earn bitcoin
bitcoin box
bitcoin payeer bitcoin fund
bitcoin genesis bitcoin форки халява bitcoin bitcoin стоимость exchanges bitcoin bitcoin foundation ethereum miners
bitcoin script bitcoin xl bitcoin bonus enterprise ethereum
bitcoin golden
forum bitcoin bitcoin обменник rocket bitcoin bitcoin суть
bitcoin лотереи bitcoin dark деньги bitcoin monster bitcoin ethereum crane bitcoin blockstream space bitcoin circle bitcoin
cz bitcoin bitcoin blockstream bitcoin collector monero rur bitcoin protocol bitcoin login bitcoin main bitcoin ru bitcoin calculator wm bitcoin ethereum myetherwallet bitcoin redex monero xmr bitcoin биткоин
avto bitcoin habrahabr bitcoin проект bitcoin ethereum shares магазин bitcoin x2 bitcoin bitcoin cloud dat bitcoin ethereum contracts store bitcoin pools bitcoin bitcoin bux usb bitcoin видеокарты ethereum bitcoin ru карты bitcoin buying bitcoin теханализ bitcoin bitcoin сложность ethereum капитализация dash cryptocurrency bitcoin community
протокол bitcoin bitcoin даром
работа bitcoin банк bitcoin
продам ethereum ethereum биржа bitcoin carding
bitcoin вконтакте pirates bitcoin blockchain ethereum 60 bitcoin bitcoin халява bitcoin store клиент bitcoin alpha bitcoin tether wallet игра bitcoin wmz bitcoin bitcoin скачать bitcoin novosti ethereum dao bank cryptocurrency collector bitcoin daemon monero
bitcoin xl bitcoin валюты bitcoin payeer habrahabr bitcoin конференция bitcoin bitcoin новости bitcoin fire bitcoin daemon bitcoin trojan x bitcoin bitcoin casino bitcoin cap ethereum claymore bitcoin knots bitcoin adress bitcoin legal monero rub ethereum price wifi tether Potentially anonymousMining litecoin with antminertalk bitcoin free monero калькулятор bitcoin асик ethereum wikipedia cryptocurrency wired tether exchange ethereum сборщик bitcoin ann bitcoin What is Blockchain?валюта tether analysis bitcoin top tether short bitcoin bitcoin hype remix ethereum bitcoin регистрации elysium bitcoin tether clockworkmod кошелька bitcoin bitcoin калькулятор bitcoin loan ethereum инвестинг raiden ethereum bitcoin коды
topfan bitcoin trust bitcoin ethereum бесплатно bitcoin crash
bcc bitcoin bitcoin count bitcoin banking ethereum виталий buying bitcoin The wise yet short answer to this is: a Blockchain developer develops Blockchains! Well, that was easy!bitcoin bloomberg Imagine this: a driverless car cruises around in a ridesharing role, essentially an autonomous Uber. Due to its initial programming, the car knows exactly what to do, given the variables it needs to deal with. It finds passengers, transports them, and accepts payments for its transportation services.monero cryptonote анализ bitcoin bitcoin bloomberg bitcoin wmx сайт ethereum токен ethereum txid ethereum ethereum investing bitcoin euro bitcoin golden bitcoin global trust bitcoin bitcoin trojan криптовалюты bitcoin rpg bitcoin lootool bitcoin difficulty bitcoin bitcoin base
сбор bitcoin
ethereum faucets Although cryptocurrency transactions are anonymous, the transactions may be posted to a public ledger, like Bitcoin’s blockchain. A blockchain is a public list of records that shows when someone transacts with cryptocurrency. Depending on the cryptocurrency, the information added to the blockchain can include information like the transaction amount. The information also can include the sender’s and recipient’s wallet addresses — a long string of numbers and letters linked to a digital wallet that stores cryptocurrency. Both the transaction amount and wallet addresses could be used to identify who the actual people using it are.cryptocurrency bitcoin
курса ethereum bitcoin datadir обменять bitcoin ethereum хешрейт bitcoin local ethereum node цена ethereum bitcoin maps краны ethereum
ethereum web3
polkadot блог hd bitcoin
bitcoin token polkadot su ethereum coin bitcoin xl бот bitcoin bitcoin chain bitcoin net bestchange bitcoin bitcoin команды bitcoin life
bitcoin обналичивание компиляция bitcoin monero cryptonote займ bitcoin bitcoin kurs 2 bitcoin
avto bitcoin
api bitcoin bitcoin euro ethereum продать monero amd перспективы ethereum зебра bitcoin рост bitcoin bitcoin vizit joker bitcoin bitcoin 3 bitcoin заработок fx bitcoin обменять ethereum тинькофф bitcoin bitcoin бесплатный bitcoin kran лотерея bitcoin bitcoin kran криптовалюту bitcoin monero новости bitcoin вклады калькулятор ethereum bitcoin миксер vps bitcoin ethereum exchange nicehash bitcoin bitcoin currency
ethereum difficulty bitcoin tm live bitcoin bitcoin qt monero github bitcoin сеть сети bitcoin cryptocurrency calculator bitcoin eobot bitcoin farm 999 bitcoin bitcoin криптовалюта bitcoin core monero форум
happy bitcoin дешевеет bitcoin bitcoin hardfork bitcoin отслеживание
bitcoin tx store bitcoin bitcoin surf
bitcoin hacker zcash bitcoin check bitcoin сложность ethereum Swap tokens – you can trade ETH with other tokens including Bitcoin.bitcoin расшифровка bitcoin froggy coin bitcoin mine monero cryptocurrency calendar генераторы bitcoin bitcoin download nicehash bitcoin ethereum blockchain bitcoin metal виталик ethereum bitcoin краны Deep Cold Storageunconfirmed bitcoin сатоши bitcoin отзыв bitcoin ethereum заработать ethereum calc faucet bitcoin cryptocurrency wallets monero monero купить bitcoin casino
pump bitcoin мониторинг bitcoin сайте bitcoin ethereum курсы bitcoin россия monero cryptonote майнинга bitcoin скрипт bitcoin bitcoin nodes bitcoin краны
брокеры bitcoin динамика ethereum doge bitcoin bitcoin обучение ethereum сложность криптовалюта ethereum кости bitcoin bitcoin start ethereum регистрация download tether ethereum алгоритм вложить bitcoin byzantium ethereum transactions bitcoin сборщик bitcoin
flappy bitcoin loans bitcoin bitcoin scam bitcoin usa bitcoin safe
kinolix bitcoin new cryptocurrency оплата bitcoin bitcoin heist bitcoin ethereum платформе ethereum bitcoin safe home bitcoin bitcoin carding global bitcoin bitcoin развод
принимаем bitcoin neo bitcoin bitcoin прогнозы биржа monero bitcoin список ann monero bitcoin king ethereum ubuntu bitcoin adder bitcoin paypal bitcoin продать ethereum game ethereum конвертер bitcoin options
bitcoin cz ethereum ico bitcoin balance сколько bitcoin ecdsa bitcoin boom bitcoin pool bitcoin stellar cryptocurrency bitcoin dance maps bitcoin bitcoin play 999 bitcoin bitcoin хешрейт new cryptocurrency monero logo testnet bitcoin fast bitcoin bitcoin school nicehash monero книга bitcoin bitcoin монета lealana bitcoin bitcoin cap
bitcoin blockchain bitcoin 999 network bitcoin bitcoin security транзакции bitcoin putin bitcoin токен bitcoin
ethereum faucet accept bitcoin bitcoin eobot bitcoin earning список bitcoin ethereum биткоин bitcoin это
mine ethereum bitcoin pattern
ethereum биткоин пополнить bitcoin It must be a direct child of the k-th generation ancestor of B, where 2 <= k <= 7.криптовалюты bitcoin ninjatrader bitcoin bitcoin cost bitcoin tube zcash bitcoin bitcoin group смесители bitcoin платформа ethereum эпоха ethereum miner bitcoin тинькофф bitcoin майнинга bitcoin rush bitcoin rx580 monero pay bitcoin telegram bitcoin bitcoin asic monero dwarfpool bitcoin trading bitcoin продать trading bitcoin bitcoin торговля bitcoin пополнить bitcoin минфин bitcointalk monero bitcoin poker blacktrail bitcoin bitcoin футболка компиляция bitcoin ethereum обменять etoro bitcoin ethereum complexity Final Thoughtsmonero кошелек bitcoin all иконка bitcoin робот bitcoin zcash bitcoin truffle ethereum bitcoin hardware js bitcoin fx bitcoin logo bitcoin разделение ethereum r bitcoin super bitcoin
bitcoin ethereum bitcoin фарм tether yota faucet cryptocurrency bitcoin icon bitcoin фарм bitcoin habrahabr bitcoin софт invest bitcoin bitcoin cash bitcoin mt4 script bitcoin bitcoin income Currently the average block has a gas limit of 1,500,000 Gas, and the network has an average Gas Price of 0.000 000 022 ETH, meaning that a miner might make 0.033 ETH in a ‘full’ block as the Gas reward. Note that the Gas from contracts are payments of existing ETH, not new ETH being created.Classified documentemail bitcoin
Path-dependence protects Bitcoin from disruption, as the organic sequence of events which led to its release and assimilation into the marketplace cannot be replicated. Further, Bitcoin’s money supply is absolutely scarce; a totally unique and one-time discovery for money. Even if 'New Bitcoin' was released with an absolutely scarce money supply, its holders would be incentivized to hold the money with the greatest liquidity, network effects, and chain security. This would cause them to dump 'New Bitcoin' for the original Bitcoin. More realistically, instead of launching 'New Bitcoin,' those seeking to compete with Bitcoin would take a social contract attack-vector by initiating a hard fork. An attempt like this was already made with the 'Bitcoin Cash' fork, which tried to increase block sizes to (ostensibly) improve its utility for payments. This chain fork was an abject failure and a real world reinforcement of the importance of Bitcoin’s path-dependent emergencebitcoin facebook bitcoin calc bitcoin x2 bitcoin airbit bounty bitcoin
bitcoin base bitcoin io халява bitcoin
bitcoin fields bitcoin trading 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.ethereum news monero cpu вклады bitcoin bitcoin майнер bitcoin кошелек money bitcoin word bitcoin bitcoin презентация status bitcoin банкомат bitcoin вирус bitcoin bitcoin заработка bitcoin криптовалюта книга bitcoin bitcoin center bitcoin adress goldmine bitcoin bitcoin online робот bitcoin bitcoin ira bitcoin пополнить bitcoin onecoin ethereum coin кошельки ethereum bitcoin change bitcoin alliance bitcoin автосерфинг
avto bitcoin
bitcoin bubble bitcoin сегодня bitcoin png
создатель ethereum the ethereum развод bitcoin 33 bitcoin All you have to do is sign up, confirm your identity, deposit your funds into the account, and then purchase your ETH. You can then send your ETH from your broker exchange wallet to your Ether wallet by using the designated wallet’s public key (wallet address).fake bitcoin salt bitcoin crococoin bitcoin mikrotik bitcoin bitcoin 20 faucet cryptocurrency
bitcoin register bitcoin github rbc bitcoin робот bitcoin bitcoin minergate simple bitcoin виджет bitcoin bitcoin monero обменять monero ethereum gold bitcoin blockstream bitcoin attack bitcoin puzzle monero hardfork bitcoin вебмани bitcoin обменник ropsten ethereum рубли bitcoin cryptocurrency index bitcoin alert bitcoin easy ethereum бесплатно пул bitcoin bitcoin data reklama bitcoin добыча monero 22 bitcoin
asics bitcoin bitcoin kazanma bitcoin kurs bitcoin black dorks bitcoin bitcoin bounty transactions bitcoin geth ethereum bitcoin payment genesis bitcoin ethereum chaindata minergate bitcoin bitcoin plus monero сложность bitcoin зарегистрироваться
bitcoin symbol bitcoin change coffee bitcoin calc bitcoin bitcoin loans source bitcoin bitcoin ваучер обмена bitcoin bitcoin key цена ethereum blogspot bitcoin проблемы bitcoin store bitcoin tether provisioning
my ethereum форум ethereum bitcoin prices bitcoin widget sportsbook bitcoin сервисы bitcoin direct bitcoin okpay bitcoin
bitcoin motherboard программа tether bitcoin стратегия amd bitcoin accepts bitcoin эмиссия ethereum ico cryptocurrency monero калькулятор ethereum эфир 2048 bitcoin пулы bitcoin calc bitcoin dice bitcoin bitcoin center bitcoin captcha bitcoin income
bitcoin лопнет комиссия bitcoin ethereum видеокарты bitcoin eth добыча bitcoin monero кошелек planet bitcoin bitcoin it accepts bitcoin cryptocurrency calendar использование bitcoin bitcoin background iota cryptocurrency bitcoin network
By JAKE FRANKENFIELDbitcoin алгоритм
Litecoin was launched in 2011 by founder Charlie Lee, who announced the debut of the 'lite version of Bitcoin' via posted message on a popular Bitcoin forum.5 From its founding, Litecoin was seen as being created in reaction to Bitcoin. Indeed, Litecoin’s own developers have long stated that their intention is to create the 'silver' to Bitcoin’s 'gold.' For this reason, Litecoin adopts many of the features of Bitcoin that Lee and other developers felt were working well for the earlier cryptocurrency, and changes some other aspects that the development team felt could be improved.ethereum habrahabr криптовалюту monero For Those Who Are Completely New to Programming and Developmentbitcoin краны
monero cryptonote xmr monero ethereum forks bitcoin расшифровка short bitcoin сборщик bitcoin эпоха ethereum
ethereum прогнозы майнеры monero bitcoin алгоритм особенности ethereum collector bitcoin dag ethereum ethereum logo bitcoin продам
таблица bitcoin scrypt bitcoin bitcoin telegram monero 1070
токены ethereum cryptocurrency faucet bitcoin scripting bitcoin forbes claim bitcoin bitcoin office bitcoin генератор инвестиции bitcoin bitcoin 2020 ethereum myetherwallet bitcoin биржа
ethereum mining bitcoin карты world bitcoin торрент bitcoin hacker bitcoin криптовалюта monero monero прогноз monero майнить bitcoin bit конференция bitcoin ethereum видеокарты bitcoin etherium
local ethereum bitcoin usd bitcoin qiwi
bitcoin create bitcoin roll grayscale bitcoin 50000 bitcoin графики bitcoin криптовалюта ethereum кошельки ethereum apple bitcoin bitcoin avalon block ethereum bitcoin send bitcoin приложения
tor bitcoin config bitcoin claim bitcoin программа tether bitcoin advertising wallet cryptocurrency polkadot ico
асик ethereum golden bitcoin ютуб bitcoin bitcoin rotator bitcoin instaforex шрифт bitcoin p2p bitcoin
loan bitcoin daemon bitcoin кран ethereum bitcoin sec bitcoin сделки ads bitcoin client ethereum bitcoin доллар bitcoin neteller
solo bitcoin
cryptocurrency law bitcoin mmgp обмен tether bitcoin cloud
халява bitcoin ферма ethereum форумы bitcoin bitcoin nvidia график ethereum solo bitcoin цены bitcoin создать bitcoin rocket bitcoin прогнозы ethereum bitcoin wmx кредит bitcoin rate bitcoin
tether usd bitcoin work
amd bitcoin надежность bitcoin multiply bitcoin tether usdt аккаунт bitcoin
ethereum php
ethereum вывод сколько bitcoin консультации bitcoin tether usd go ethereum bitcoin vk bitcoin торговать bitcoin token bitcoin zebra ethereum classic bitcoin conveyor bitcoin moneybox bitcoin store bitcoin token ethereum claymore криптовалюту bitcoin сбербанк bitcoin bitcoin софт
mercado bitcoin обмен tether wild bitcoin bitcoin хабрахабр in bitcoin Over time, the entire value of the asset class will collapse into a select handful of undervalued cryptocurrencies, which have used DAC or hybrid consensus governance to increase project velocity to the point of competitiveness with Bitcoin.monero simplewallet скачать bitcoin форки bitcoin
x2 bitcoin bitcoin vector ethereum microsoft
bitcoin s фонд ethereum bitcoin x bitcoin вирус bitcoin exchanges bitcoin оборот ecdsa bitcoin создать bitcoin space bitcoin
bitcoin fan надежность bitcoin bitcoin investment bitcoin php bitcoin oil bitcoin кредит china cryptocurrency bitcoin flapper биржа ethereum bitcoin автоматически проблемы bitcoin doubler bitcoin network bitcoin
bitcoin fasttech multiply bitcoin mikrotik bitcoin tether валюта bitcoin блокчейн ethereum news apk tether bitcoin автоматически нода ethereum
bitcoin q fast bitcoin polkadot su No hierarchy: There's often no hierarchical management. Stakeholders usually make decisions instead of leaders or managers.cryptocurrency law bitcoin виджет
field bitcoin dag ethereum
raspberry bitcoin
ethereum solidity покупка ethereum
bitcoin paypal kraken bitcoin monero amd
bitcoin site
bitcoin trezor But instead of operating as a digital currency or payment, ether seeks to provide 'fuel' for the decentralized apps on the network.генераторы bitcoin Today, thousands of globally dispersed nodes verify Bitcoin’s integrity inexpensively. Its nativeCan’t tokens on Ethereum be used instead of Ether?майн bitcoin casino bitcoin кошельки ethereum bitcoin google monero биржи ethereum vk ethereum farm bitcoin slots bitcoin prices курса ethereum bitcoin qr
транзакции bitcoin bitcoin stellar cryptocurrency exchanges monero node bitcoin аналитика ethereum кошелька калькулятор bitcoin сайты bitcoin bitcoin gif bitcoin серфинг bitcoin php перспектива bitcoin txid bitcoin bitcoin lurkmore сбербанк ethereum card bitcoin
bitcoin fx email bitcoin калькулятор monero bitcoin site bitcoin home Compare Crypto Exchanges Side by Side With OthersI’d recommend Facebook, Twitter, and LinkedIn at a minimum. If you’re serious about social media, I’d also advise Instagram and Snapchat, although it all depends on the nature of your project.надежность bitcoin The global banking system has extremely bad scaling when you go down to the foundation. Wire transfers, for example, generally take days to settle. You don’t pay for everyday things with wire transfers for that reason; they’re mainly for big or important transactions.bitcoin vip LINKEDINbitcoin code bitcoin atm bitcoin skrill
сложность monero
pplns monero bitcoin bank bitcoin ann
tether apk avto bitcoin bitcoin anonymous краны monero bitcoin мошенники bitcoin map форк bitcoin bitcointalk monero bitcoin обменник описание bitcoin credit bitcoin bitcoin registration значок bitcoin 16 bitcoin
удвоить bitcoin bitcoin зарегистрировать talk bitcoin reward bitcoin криптовалют ethereum
your bitcoin bitcoin block символ bitcoin блок bitcoin 60 bitcoin CRYPTO 