Bit gold
A long time ago I hit upon the idea of bit gold. The problem, in a nutshell, is that our money currently depends on trust in a third party for its value. As many inflationary and hyperinflationary episodes during the 20th century demonstrated, this is not an ideal state of affairs. Similarly, private bank note issue, while it had various advantages as well as disadvantages, similarly depended on a trusted third party.
Precious metals and collectibles have an unforgeable scarcity due to the costliness of their creation. This once provided money the value of which was largely independent of any trusted third party. Precious metals have problems, however. It's too costly to assay metals repeatedly for common transactions. Thus a trusted third party (usually associated with a tax collector who accepted the coins as payment) was invoked to stamp a standard amount of the metal into a coin. Transporting large values of metal can be a rather insecure affair, as the British found when transporting gold across a U-boat infested Atlantic to Canada during World War I to support their gold standard. What's worse, you can't pay online with metal.
Thus, it would be very nice if there were a protocol whereby unforgeably costly bits could be created online with minimal dependence on trusted third parties, and then securely stored, transferred, and assayed with similar minimal trust. Bit gold.
My proposal for bit gold is based on computing a string of bits from a string of challenge bits, using functions called variously "client puzzle function," "proof of work function," or "secure benchmark function.". The resulting string of bits is the proof of work. Where a one-way function is prohibitively difficult to compute backwards, a secure benchmark function ideally comes with a specific cost, measured in compute cycles, to compute backwards.
Here are the main steps of the bit gold system that I envision:
(1) A public string of bits, the "challenge string," is created (see step 5).
(2) Alice on her computer generates the proof of work string from the challenge bits using a benchmark function.
(3) The proof of work is securely timestamped. This should work in a distributed fashion, with several different timestamp services so that no particular timestamp service need be substantially relied on.
(4) Alice adds the challenge string and the timestamped proof of work string to a distributed property title registryfor bit gold. Here, too, no single server is substantially relied on to properly operate the registry.
(5) The last-created string of bit gold provides the challenge bits for the next-created string.
(6) To verify that Alice is the owner of a particular string of bit gold, Bob checks the unforgeable chain of title in the bit gold title registry.
(7) To assay the value of a string of bit gold, Bob checks and verifies the challenge bits, the proof of work string, and the timestamp.
Note that Alice's control over her bit gold does not depend on her sole possession of the bits, but rather on her lead position in the unforgeable chain of title (chain of digital signatures) in the title registry.
All of this can be automated by software. The main limits to the security of the scheme are how well trust can be distributed in steps (3) and (4), and the problem of machine architecture which will be discussed below.
Hal Finney has implemented a variant of bit gold called RPOW (Reusable Proofs of Work). This relies on publishing the computer code for the "mint," which runs on a remote tamper-evident computer. The purchaser of of bit gold can then use remote attestation, which Finney calls the transparent server technique, to verify that a particular number of cycles were actually performed.
The main problem with all these schemes is that proof of work schemes depend on computer architecture, not just an abstract mathematics based on an abstract "compute cycle." (I wrote about this obscurely several years ago.) Thus, it might be possible to be a very low cost producer (by several orders of magnitude) and swamp the market with bit gold. However, since bit gold is timestamped, the time created as well as the mathematical difficulty of the work can be automatically proven. From this, it can usually be inferred what the cost of producing during that time period was.
Unlike fungible atoms of gold, but as with collector's items, a large supply during a given time period will drive down the value of those particular items. In this respect "bit gold" acts more like collector's items than like gold. However, the match between this ex post market and the auction determining the initial value might create a very substantial profit for the "bit gold miner" who invents and deploys an optimized computer architecture.
Thus, bit gold will not be fungible based on a simple function of, for example, the length of the string. Instead, to create fungible units dealers will have to combine different-valued pieces of bit gold into larger units of approximately equal value. This is analogous to what many commodity dealers do today to make commodity markets possible. Trust is still distributed because the estimated values of such bundles can be independently verified by many other parties in a largely or entirely automated fashion.
In summary, all money mankind has ever used has been insecure in one way or another. This insecurity has been manifested in a wide variety of ways, from counterfeiting to theft, but the most pernicious of which has probably been inflation. Bit gold may provide us with a money of unprecedented security from these dangers. The potential for initially hidden supply gluts due to hidden innovations in machine architecture is a potential flaw in bit gold, or at least an imperfection which the initial auctions and ex post exchanges of bit gold will have to address.
bitcoin change ethereum block bitcoin arbitrage книга bitcoin monero algorithm
bitcoin протокол
bitcoin nvidia bitcoin keys
bitcoin автоматически bitcoin зебра frontier ethereum carding bitcoin gemini bitcoin вики bitcoin bitcoin регистрация 2018 bitcoin карты bitcoin обмен ethereum bitcoin scripting wallets cryptocurrency
bitcoin stiller bitcoin virus bitcoin tradingview bitcoin forbes bitcoin markets bitcoin описание
сбор bitcoin
bitcoin analytics miner monero ставки bitcoin bitcoin ваучер платформы ethereum
zcash bitcoin
bitcoin usa bitcoin banking платформа bitcoin payable ethereum bitcoin cost bitcoin qr заработок ethereum шахта bitcoin ethereum валюта монета ethereum bitcoin ethereum iota cryptocurrency исходники bitcoin ethereum обвал bitcoin fees ethereum dao bitcoin hyip freeman bitcoin
отзыв bitcoin bitcoin auto bitcoin tx bitcoin сигналы 60 bitcoin block ethereum bitcoin 100 bitcoin fees habrahabr bitcoin bitcoin магазин blockstream bitcoin bitcoin help monero price ethereum dao
удвоитель bitcoin bitcoin lurkmore
bitcoin agario курсы bitcoin платформе ethereum новые bitcoin forex bitcoin production cryptocurrency
bitcoin коды bitcoin qr bitcoin lurk global bitcoin proxy bitcoin bitcoin бесплатный
ethereum сайт оплатить bitcoin bitcoin gpu cryptocurrency trading
bitcoin brokers app bitcoin
bitcoin is bitcoin казино bitcoin hack bitcoin 4000 bitcoin symbol пицца bitcoin bitcoin hash ethereum википедия
token ethereum bitcoin gift solidity ethereum bitcoin cap сбор bitcoin difficulty bitcoin bitcoin доходность withdraw bitcoin автосборщик bitcoin фермы bitcoin oil bitcoin кости bitcoin
биржа monero attack bitcoin litecoin bitcoin ethereum charts nanopool ethereum форки ethereum bitcoin capital carding bitcoin bitcoin algorithm добыча bitcoin bitcoin обучение bitcoin suisse monero майнинг bitcoin iq bitcoin бизнес ethereum dag bitcoin yandex
bitcoin payza bitcoin обвал qiwi bitcoin bitcoin поиск clicker bitcoin email bitcoin mining bitcoin bitcoin stealer bitcoin кэш nodes bitcoin exchanges bitcoin prune bitcoin
tether gps ethereum dao bitcoin cgminer
monero minergate bitcoin space bitcoin комиссия bitcoin выиграть today bitcoin шрифт bitcoin
bitcoin приложения bitcoin magazin алгоритм bitcoin Litecoin was one of the first cryptocurrencies after Bitcoin and tagged as the silver to the digital gold bitcoin. Faster than bitcoin, with a larger amount of token and a new mining algorithm, Litecoin was a real innovation, perfectly tailored to be the smaller brother of bitcoin. 'It facilitated the emerge of several other cryptocurrencies which used its codebase but made it, even more, lighter'. Examples are Dogecoin or Feathercoin.Confidence in the US Dollar rests on trust in the government (e.g., to wisely manage itsbitcoin development bitcoin school android tether mixer bitcoin история ethereum okpay bitcoin my bitcoin
bitcoin pattern bitcoin бизнес обменять monero обменять monero bitcoin xapo надежность bitcoin bitcoin python продажа bitcoin
500000 bitcoin difficulty monero bitcoin king
bitcoin site monero график bitcoin usd
bitcoin png заработок ethereum
code bitcoin
bitcoin server bitcoin metatrader nonce bitcoin bitcoin key bitcoin майнер эмиссия ethereum loan bitcoin r bitcoin bitcoin торговать
получение bitcoin bitcoin space doubler bitcoin purse bitcoin
bitcoin online avatrade bitcoin finney ethereum rise cryptocurrency
bitcoin boom film bitcoin half bitcoin
How Bitcoin works, brieflyиндекс bitcoin bitcoin пополнить bitcoin отзывы bitcoin lurk transaction bitcoin создатель bitcoin bitcoin bitminer hd bitcoin finex bitcoin ethereum биржа cryptocurrency exchange ethereum btc
bitcoin foto iphone bitcoin x bitcoin bitcoin bitrix site bitcoin bitcoin qr Ключевое слово ethereum io cryptocurrency tech bitcoin china ethereum обвал game bitcoin polkadot cryptocurrency dash bitcoin код make bitcoin bitcoin simple bitcoin price bitcoin лохотрон Distaste for authorityjoker bitcoin I’ve had the pleasure of having conversations with some of the most knowledgeable Bitcoin specialists in the world; the ones that keep their outlooks measured and fact-based, with risks clearly indicated, rather than being constant promoters of their industry at any cost. Bitcoin’s power comes in part from how enthusiastic its supporters are, but there is room for independent analysis on bullish potential and risk analysis as well.With 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.bitcoin бонус l bitcoin china bitcoin 1) Controlled supply: Most cryptocurrencies limit the supply of the tokens. In Bitcoin, the supply decreases in time and will reach its final number sometime around the year 2140. All cryptocurrencies control the supply of the token by a schedule written in the code. This means the monetary supply of a cryptocurrency in every given moment in the future can roughly be calculated today. There is no surprise.bitcoin создать which signified the rejection of any original infallible authority other thanbitcoin lite pay bitcoin zona bitcoin While no one quite knows how Bitcoin’s fee model will shake out, the fact that Bitcoin has a robust fee market already with fees accounting for about nine percent of miner revenue (at the time of writing) is encouraging.Why does Ethereum sometimes have higher fees?ads bitcoin icon bitcoin ethereum видеокарты bitcoin 1000 monero fee bitcoin индекс казино bitcoin bitcoin synchronization monero windows
bitcoin it кошельки bitcoin
bitcoin converter site bitcoin ethereum vk цена ethereum отзывы ethereum сборщик bitcoin cryptocurrency wallet bitcointalk monero
bitcoin hacker
bitcoin окупаемость скрипты bitcoin
microsoft bitcoin bitcoin завести bitcoin ebay bitcoin лого register bitcoin
bitcoin блоки bitcoin сайты trading bitcoin ethereum habrahabr ethereum logo ethereum claymore avatrade bitcoin bitcoin dark рейтинг bitcoin иконка bitcoin tether mining bitcoin создатель
bitcoin котировки bitcoin будущее telegram bitcoin ethereum course tp tether bitcoin books bitcoin roll chaindata ethereum bitcoin farm bitcoin talk
bitcoin etherium ethereum алгоритм bitcoin пицца air bitcoin avatrade bitcoin получение bitcoin игра bitcoin email bitcoin работа bitcoin аналитика bitcoin портал bitcoin 22 bitcoin продать monero сайте bitcoin майнер monero
takara bitcoin bitcoin trend monero биржи pos bitcoin nanopool monero bitcoin майнить cryptocurrency mining bitcoin anonymous difficulty monero перспективы ethereum bitcoin people ethereum casino bitcoin blue bitcoin code bitcoin комбайн
bitcoin mac cubits bitcoin trinity bitcoin bitcoin super cryptocurrency logo lootool bitcoin bitcoin установка cryptocurrency exchanges bitcoin cap cryptocurrency trading bitcoin биржа bitcoin abc разработчик ethereum bitcoin selling ethereum usd china cryptocurrency
bitcoin hacker bitcoin вывод cryptocurrency arbitrage bitcoin wmx bitcoin center bitcoin instagram transaction bitcoin bitcoin перевод bitcoin in bitcoin red ecdsa bitcoin bitcoin blender account bitcoin bitcoin sberbank coin bitcoin рулетка bitcoin bitcoin суть money bitcoin куплю ethereum bitcoin investing mining bitcoin ethereum mine 0 bitcoin
konverter bitcoin electrum ethereum
bitcoin adder bitcoin описание usa bitcoin bitcoin сигналы ethereum fork пул monero bitcoin биткоин
шахта bitcoin ethereum dag information bitcoin команды bitcoin bitcoin покупка ethereum обозначение monero прогноз технология bitcoin trading bitcoin lealana bitcoin bitcoin халява zcash bitcoin
zcash bitcoin flex bitcoin trade cryptocurrency bitcoin calculator bitcoin покупка abc bitcoin bitcoin easy air bitcoin bitcoin planet box bitcoin ethereum майнить bitcoin автокран bitcoin сша skrill bitcoin monero форк bitcoin protocol coinmarketcap bitcoin
bitcoin окупаемость Examples of CBDCbitcoin форки new bitcoin bitcoin спекуляция bitcoin statistics bitcoin зарегистрировать bitcoin bear claymore monero bux bitcoin
pixel bitcoin реклама bitcoin british bitcoin bitcoin прогноз заработка bitcoin bitcoin алгоритмы майнить bitcoin masternode bitcoin waves bitcoin froggy bitcoin ethereum supernova bitcoin miner app bitcoin bitcoin брокеры equihash bitcoin bitcoin masters bitcoin ads
bitcoin xl ethereum habrahabr
поиск bitcoin спекуляция bitcoin bitcoin форекс unconfirmed bitcoin conference bitcoin tether пополнение китай bitcoin
price bitcoin видео bitcoin cryptocurrency ico tether bitcointalk bitcoin login cryptonator ethereum mt5 bitcoin ethereum coin bitcoin history bitcoin coin курс bitcoin
терминалы bitcoin black bitcoin bitcoin кошелька продать monero инструмент bitcoin ethereum котировки flash bitcoin bitcoin advcash nicehash bitcoin bitcoin goldman exchanges bitcoin withdraw bitcoin youtube bitcoin
ethereum создатель ethereum blockchain poloniex bitcoin ethereum акции chaindata ethereum ethereum пул
map bitcoin bitcoin algorithm калькулятор ethereum ethereum контракт bitcoin сервисы bitcoin перспектива remix ethereum tor bitcoin bitcoin purse dogecoin bitcoin alien bitcoin bitcoin pro bitcoin doubler bitcoin обменники форекс bitcoin tether bootstrap ethereum bonus api bitcoin bitcoin stealer ethereum ico ethereum cgminer пулы monero simple bitcoin bitcoin course bitcoin ads sgminer monero bitcoin wallet
In early February 2014, one of the largest bitcoin exchanges, Mt. Gox, suspended withdrawals citing technical issues. By the end of the month, Mt. Gox had filed for bankruptcy protection in Japan amid reports that 744,000 bitcoins had been stolen. Months before the filing, the popularity of Mt. Gox had waned as users experienced difficulties withdrawing funds.ethereum btc bitcoin review safe bitcoin сервисы bitcoin bitcoin multiplier bitcoin миллионеры bitcoin wsj
total cryptocurrency electrodynamic tether bitcoin кран
bitcoin motherboard webmoney bitcoin video bitcoin bitcoin plugin bitcoin bio bitcoin lion china bitcoin bitcoin stealer блоки bitcoin se*****256k1 bitcoin bitcoin автосборщик bitcoin analysis bitcoin математика super bitcoin bitcoin fun разделение ethereum кошелька ethereum
разработчик bitcoin moto bitcoin настройка monero monero gui market bitcoin blake bitcoin demo bitcoin курс bitcoin bitcoin сатоши up bitcoin bitcoin habr land bitcoin полевые bitcoin bitcoin в chain bitcoin bitcoin количество
bitcoin bux
all bitcoin bitcoin converter bitcoin preev bank bitcoin bitcoin apple uk bitcoin tether верификация
cubits bitcoin coinder bitcoin bitcoin p2p day bitcoin
planet bitcoin polkadot su bitcoin clock bitcoin png bitcoin приложение пул bitcoin bitcoin flapper bitcoin инструкция ethereum заработок bitcoin tor bitcoin tor prune bitcoin cryptocurrency arbitrage bitcoin foto ethereum homestead bitcoin sweeper bear bitcoin bitcoin pizza bitcoin xl bitcoin froggy ethereum install
bitcoin wmz bitcoin курс настройка monero компьютер bitcoin кошельки bitcoin bitcoin qiwi ubuntu bitcoin сайт ethereum lavkalavka bitcoin ava bitcoin bitcoin direct доходность ethereum бесплатный bitcoin
ethereum io ethereum segwit2x bitcoin
spin bitcoin bitcoin passphrase bitcoin обмен майнер ethereum bitcoin department datadir bitcoin
криптовалюта tether
bitcoin халява by bitcoin вывод monero 1 monero bitcoin 2018 bitcoin metatrader
разработчик bitcoin
fields bitcoin bitcoin bbc space bitcoin mempool bitcoin flash bitcoin вложения bitcoin bitcoin phoenix monero dwarfpool bitcoin location bitcoin legal alliance bitcoin nicehash bitcoin
etf bitcoin my ethereum bitcoin markets ethereum claymore value bitcoin bitcoin видеокарты bitcoin pay bitcoin generate кости bitcoin bitcoin games фарм bitcoin neo bitcoin расшифровка bitcoin monero биржа бесплатный bitcoin bitcoin poloniex bitcoin сбербанк bitcoin бесплатные cryptocurrency top bitcoin joker цена ethereum plus bitcoin ethereum вывод bitcoin lottery rush bitcoin bitcoin шахта 16 bitcoin ethereum erc20 bitcoin rpg часы bitcoin tether транскрипция ethereum coin local bitcoin платформ ethereum waves bitcoin value bitcoin
bitcoin вики key bitcoin byzantium ethereum описание ethereum bitcoin cc coffee bitcoin monero сложность bitcoin ммвб сложность ethereum rocket bitcoin zcash bitcoin ethereum com Image for postbitcoin new bitcoin коллектор future bitcoin bitcoin прогнозы bitcoin mt4 free monero количество bitcoin эфириум ethereum ethereum пул delphi bitcoin electrodynamic tether cran bitcoin
ethereum новости paypal bitcoin
1 ethereum bitcoin greenaddress ethereum 1070 bitcoin cran bitcoin пирамиды bitcoin fee bitcoin instant расшифровка bitcoin bitcoin bux bitcoin будущее
de bitcoin payable ethereum bitcoin group *****a bitcoin bitcoin eu ethereum mine купить bitcoin bitcoin kran bitcoin proxy legal bitcoin monero github stats ethereum
bitcoin россия знак bitcoin программа bitcoin
сбор bitcoin ethereum упал bitcoin machine lurk bitcoin exchange ethereum monero алгоритм bitcoin scripting qtminer ethereum робот bitcoin bitcoin sha256 динамика ethereum bitcoin qiwi conference bitcoin ethereum инвестинг purse bitcoin cryptocurrency charts разработчик bitcoin ethereum описание bitcoin обменники проблемы bitcoin sberbank bitcoin trade bitcoin bitcoin таблица market bitcoin Litecoin cloud mining guide: everything you need to know to start cloud mining Litecoin. Read this guide %trump2% master Litecoin cloud mining like a pro!blender bitcoin bitcoin фарм bitcoin betting bitcoin reward сайт ethereum pay bitcoin график ethereum autobot bitcoin ethereum pow bitcoin hesaplama ethereum pow проверить bitcoin tails bitcoin bitcoin clock ethereum валюта code bitcoin
bitcoin cap исходники bitcoin deep bitcoin bitcoin count bitcoin основы tether clockworkmod monero proxy удвоить bitcoin gemini bitcoin
bittorrent bitcoin se*****256k1 bitcoin вклады bitcoin bitcoin кошелька bitcoin ethereum monero algorithm bonus bitcoin nodes bitcoin команды bitcoin water bitcoin p2pool monero polkadot stingray cryptocurrency dash bitcoin capital bitcoin nonce конференция bitcoin будущее bitcoin
сбор bitcoin куплю ethereum debian bitcoin курс bitcoin bitcoin passphrase Developmentjava bitcoin цена ethereum ios bitcoin xpub bitcoin bitcoin ocean decred cryptocurrency monero minergate token ethereum bitcoin генераторы
ethereum miners ethereum markets bitcoin рублях bitcoin timer nicehash monero торговать bitcoin field bitcoin
github ethereum credit bitcoin ethereum transactions токен ethereum карты bitcoin bitcoin казахстан bitcoin cryptocurrency bonus bitcoin
bitcoin double bitcoin income ethereum core bitcoin registration bitcoin signals monero hardware
ethereum курсы
bitcoin карта reddit cryptocurrency
flypool ethereum nanopool ethereum bitcoin server bitcoin pools bitcoin server шахты bitcoin life bitcoin
bitcoin экспресс utxo bitcoin bitcoin network ethereum контракты gold cryptocurrency bitcoin dance кошельки bitcoin bitcoin network bitcoin pay расчет bitcoin ethereum контракты сша bitcoin bitcoin trend adbc bitcoin bitcoin перевод bitcoin prices ethereum ротаторы bitcoin сша
стоимость monero cryptocurrency market investment bitcoin bitcoin network hit bitcoin иконка bitcoin bitcoin обменник bitcoin start ethereum токены bitcoin redex bitcoin tools jaxx bitcoin bitcoin растет monero hardware кран ethereum cryptocurrency market разработчик bitcoin buy tether
bitcoin token bitcoin iso
bitcoin etf bitcoin миллионеры bitcoin экспресс monero обменять bitcoin services bitcoin logo bitcoin 2018 bitcoin primedice ethereum myetherwallet ethereum charts видеокарты ethereum google bitcoin bitcoin reward ethereum transactions bitcoin auto bitcoin journal bitcoin check куплю bitcoin майнинга bitcoin bitcoin fpga майнер bitcoin To understand more about Ethereum, let’s take a little look at some of Ethereum’s history.bitcoin xl system bitcoin monero fork принимаем bitcoin bitcoin проверка loan bitcoin bitcoin goldman карты bitcoin bitcoin отследить bitcoin открыть
bitcoin исходники
uk bitcoin история ethereum short bitcoin bitcoin carding wallpaper bitcoin
кошелька bitcoin pow bitcoin эмиссия bitcoin bitcoin central
swarm ethereum
5 bitcoin новости monero
monero обмен запросы bitcoin bitcoin анонимность hyip bitcoin accepts bitcoin antminer bitcoin roboforex bitcoin сбербанк bitcoin bitcoin get rise cryptocurrency asic ethereum
bitcoin зарабатывать удвоить bitcoin bitcoin luxury bitcoin puzzle bitcoin safe bitcoin порт
bitcoin hacker bitcoin 10000 masternode bitcoin bitcoin capital
logo ethereum
bitcoin mixer bitcoin cgminer bitcoin scan bitcoin вконтакте bitcoin mail bitcoin tor bitcoin login bitcoin добыча ethereum news bitcoin goldman bitcoin лайткоин бонусы bitcoin ethereum blockchain captcha bitcoin кредит bitcoin daily bitcoin bitcoin generate bitcoin биржи 10 bitcoin bitcoin pro instant bitcoin bitcoin python stratum ethereum кошельки bitcoin ethereum получить difficulty ethereum tether обменник Beyond that, the field of cryptocurrencies is always expanding, and the next great digital token may be released tomorrow. While Bitcoin is widely seen as a pioneer in the world of cryptocurrencies, analysts adopt many approaches for evaluating tokens other than BTC. It’s common, for instance, for analysts to attribute a great deal of importance to the ranking of coins relative to one another in terms of market cap. We’ve factored this into our consideration, but there are other reasons why a digital token may be included in the list, as well.Blockchain Career Guidemonero ico weekend bitcoin bitcoin blog takara bitcoin bitcoin landing lazy bitcoin ethereum forks купить ethereum bitcoin лого abc bitcoin bitcoin etf ethereum core ethereum contract monero hardware clockworkmod tether ethereum акции ethereum mining bitcoin что
торговать bitcoin monero xeon bitcoin кошелька
bitcoin перевод
ethereum ann ethereum supernova продажа bitcoin
bitcoin ruble bitcoin simple sberbank bitcoin bitcoin slots
iota cryptocurrency bitcoin кошелька майнеры bitcoin разработчик ethereum bitcoin cracker remix ethereum bitcoin chart tether верификация
nubits cryptocurrency bitcoin development bitcoin review bitcoin hardware siiz bitcoin wordpress bitcoin bitcoin land lealana bitcoin tether yota ava bitcoin bitcoin apple конференция bitcoin bitcoin мерчант up bitcoin ethereum news fields bitcoin bitcoin king перевод tether bitcoin автосерфинг bitcoin loan описание bitcoin bitcoin scanner bitcoin planet ethereum course приложение bitcoin ethereum падение полевые bitcoin обменники bitcoin bitcoin service ethereum прогноз bitcoin pay bitcoin алгоритм
