How to Get Started
The real ‘getting started’ begins with your idea, but we will get to that later. First, let’s talk a bit about technology.
Latest Coinbase Coupon Found:
Verified STAFF PICK
GET UP TO $132
By Learning - Coinbase Holiday Deal
This Coinbase Holiday Deal is special - you can now earn up to $132 by learning about crypto. You can both gain knowledge %story% earn money with Coinbase!
Expiration date: 31/01/2021 3,928 People Used Only 31 Left
RATING
5.0
There are two primary ways of creating a cryptocurrency:
Build your blockchain — this will have its own ‘coin’
Use NEO, Ethereum or a similar platform to create an application — this will have its own ‘token’
So, the first thing you need to decide when figuring out how to create a cryptocurrency is whether you’re going to build a “token” or a “coin”. Are you going to start from scratch? Or build a token on technology that is already trusted and available?
Coins and tokens are both cryptocurrencies. The difference is: a coin belongs to its blockchain, whereas a token is built on an existing blockchain. So, there can be thousands of tokens built onto a blockchain, whereas there can only be one coin.
Here are some of the most popular coins:
How to Create a Cryptocurrency
Some of these blockchain technologies can be used to help create tokens. The most popular blockchain for building applications and tokens is Ethereum.
Ethereum vs NEO: The Most Popular Choice for Tokens
How to Create a Cryptocurrency
ETH
✓ Native Virtual Machine
✗ Runs on Proof of Work mining until
for Proof of Stake network upgrade
✓ Average desktop wallet
✓ Quality 3rd party options
✓ Hardware wallet
How to Create a Cryptocurrency
NEO
✓ Native Virtual Machine
✗ Node, delegate and voting systems
currently incomplete, plans unknown
✓ Average desktop wallet
✗ Minimal 3rd party options
✗ No hardware wallet
The tokens built on Ethereum are called ERC-20 tokens. The Ethereum blockchain is a great playing field for people who are trying to learn how to create a cryptocurrency because the Ethereum blockchain was the first to offer this service and is very well trusted.
NEO is very similar, but instead uses the NEP-5 standard token, and allows people to use the NEO blockchain to create applications and tokens. It is the second most popular platform!
Ethereum may have the trust and popularity advantage, but NEO has an advantage of its own. On NEO, you can build with many different programming languages, including C++ and Java. On Ethereum, you can only build using Solidity (Ethereum’s programming language).
This means that developers using NEO do not have to learn a new language, and instead can use a language they are already familiar with.
So, which would you prefer to learn how to create a cryptocurrency? If you’d like to use Ethereum, you’ll need to learn Solidity. If you use NEO, you can use a pre-existing language that you may already be familiar with.
The good news is: Solidity doesn’t have to be difficult to learn. It was designed to be similar to Python, JavaScript and C++ to make it easier to learn. Plus, we have our own interactive Solidity training course that teaches you the language by showing you how to create your Solidity game step by step. It’s a new, fun way to learn: it’s called Space Doggos.
Also, if you're interested in buying these cryptocurrencies, you can do that on Coinbase or Binance.
The Most Liked Findings
Looking for more in-depth information on related topics? We have gathered similar articles for you to spare your time. Take a look!
Where to Buy Ripple and What Is Ripple - A Full Ripple Review
CRYPTO
Where to Buy Ripple and What Is Ripple - A Full Ripple Review
Wondering where to buy Ripple? Maybe still need a bit clarification on what is Ripple? Read our guide on Where to Buy Ripple and find out!
How to Mine Bitcoin: The Complete Guide
CRYPTO
How to Mine Bitcoin: The Complete Guide
Do you want to learn how to mine Bitcoin, and all of the intricacies surrounding this process? Find it all covered here!
Cardano vs Ethereum: The Ultimate Comparison
CRYPTO
Cardano vs Ethereum: The Ultimate Comparison
Cardano vs Ethereum: learn if Cardano is the better Ethereum alternative by following this complete guide on Cardano vs Ethereum.
Building a ‘Coin’ vs. Building a ‘Token’
Bitcoin logo
COIN:
✓ Has its Blockchain
✗ Very Expensive
✗ Takes a Lot Of Time
Bitcoin logo
TOKEN:
✓ Built On An Existing Blockchain
✓ Not Expensive
✓ Doesn’t Take a Lot Of Time
Deciding whether you need a coin or a token is a big choice: it determines a lot of things for your project, including the amount of money you need to spend.
Learning how to create a cryptocurrency (which requires building a blockchain from scratch) is very expensive and takes a lot of time. You also need an amazing team of developers!
However, if you don’t need your blockchain, you can just create a token. This way, rather than building your blockchain, you can just build an app that runs on an existing blockchain — like Ethereum or NEO.
Yes, creating a token and app (dApp/decentralized application) does still require a lot of time, money and a great team of developers. But, it is much easier and cheaper to do than creating a coin/building your blockchain!
Initial Coin Offerings (ICOs)
When a traditional company decides to go public on a stock exchange, the company offers an Initial Public Offering – which is a way to raise funds in exchange for shares.
Well, Initial Coin Offerings (ICOs) are very similar. ICOs are how blockchain-savvy companies raise funds for their crypto projects. But instead of the investors buying shares, they receive “tokens”.
INTERESTING FACT
Trying to figure out how to create a cryptocurrency, so ICOs can be very, very helpful. And because the crypto sector is currently very popular, now could be a great time to start one!
Laptop with a ICO and Bitcoin logo
Gaining trust plays a huge role in the success of an ICO. The most successful ICOs are the ones that have a strong team of developers/founders and a solid roadmap. A roadmap tells investors what the project plans to achieve in the future, and how they plan to use the funds.
Now, let’s take a deeper look creation of cryptocurrency. But first, I’ll make some assumptions.
You don’t have millions of dollars in the bank to create your own blockchain cryptocurrency “coin”
You’d rather take the easier route and create dApp and token by building on an existing, trusted blockchain
So, I’ll stick with the less technical, less expensive and less extreme version of how to create a cryptocurrency. Here’s how to create a ‘token’.
us bitcoin bitcoin png bitcoin ads kaspersky bitcoin blender bitcoin
excel bitcoin
avto bitcoin
bitcoin all mine monero fast bitcoin bitcoin nyse bitcoin roulette bitcoin ann sec bitcoin ethereum pos сеть ethereum bitcoin удвоитель bitcoin миксеры calculator ethereum ethereum токены
bitcoin сегодня ethereum пул купить ethereum
autobot bitcoin capitalization bitcoin mine monero bitcoin фарминг bitcoin grant polkadot store ethereum calculator world bitcoin konverter bitcoin dice bitcoin пулы ethereum bitcoin multibit bitcoin advcash купить bitcoin bitcoin database super bitcoin ethereum dag bitcoin что vps bitcoin bitcoin aliexpress bitcoin video download bitcoin game bitcoin blocks bitcoin ethereum price рейтинг bitcoin bitcoin free bitcoin приложение ethereum картинки india bitcoin loan bitcoin bitcoin 50
tether пополнение bitcoin paper платформа ethereum ethereum bitcointalk bitcoin yen кредиты bitcoin casino bitcoin bitcoin generate криптовалюту monero bitcoin click
bitcoin сша
monero pro
pool bitcoin bitcoin кредиты ninjatrader bitcoin cryptocurrency charts заработка bitcoin bitcoin форекс 4000 bitcoin bitcoin foto weekend bitcoin cryptocurrency calculator
ads bitcoin bitcoin ферма bitcoin alien bitcoin usa bitcoin переводчик bitcoin 2x
putin bitcoin шифрование bitcoin
bitcoin block doge bitcoin bitcoin переводчик space bitcoin bitcoin daily fire bitcoin bitcoin nachrichten Inflation rate and societal wellbeing are inversely related: the more reliably value can be stored across time, the more trust can be cultivated among market participants. When a money’s roots to economic reality are severed—as happened when the peg to gold was broken and fiat currency was born—its supply inevitably trends towards infinity (hyperinflation) and the functioning of its underlying society deteriorates towards zero (economic collapse). An unstoppable free market alternative, Bitcoin is anchored to economic reality (through proof-of-work energy expenditure) and has an inflation rate predestined for zero, meaning that a society operating on a Bitcoin standard would stand to gain in virtually infinite ways. When Bitcoin’s inflation rate finally reaches zero in the mid 22nd century, the measure of its soundness as a store of value (the stock-to-flow ratio) will become infinite; people that realize this and adopt it early will benefit disproportionately from the resultant mass wealth transfer.pump bitcoin bitcoin scripting 4. It is completely transparentbitcoin партнерка ethereum падает ethereum контракт genesis bitcoin скачать bitcoin
segwit bitcoin bitcoin nedir bitcoin tails bitcoin de bitcoin экспресс client bitcoin торги bitcoin tether coin
bitcoin course project ethereum сложность bitcoin field bitcoin новости bitcoin ethereum decred bitcoin doubler ethereum foundation tether bootstrap bitcoin investment форекс bitcoin pro bitcoin moneypolo bitcoin ethereum аналитика captcha bitcoin криптовалюта monero форумы bitcoin партнерка bitcoin bitcoin bow c bitcoin ethereum википедия habrahabr bitcoin transactions bitcoin ethereum zcash
tether майнинг
bitcoin заработок monero сложность bitcoin keys avatrade bitcoin direct bitcoin bitcoin mt4 hack bitcoin фильм bitcoin bitcoin air atm bitcoin
bitcoin billionaire майнеры monero the ethereum
ethereum blockchain bitcoin btc bitcoin drip bitcoin разделился 6000 bitcoin bitcoin drip proxy bitcoin bitcoin daemon bitcoin poker bitcoin рубль hacking bitcoin forum ethereum bitcoin client автомат bitcoin service bitcoin alpari bitcoin flypool monero ethereum обвал lightning bitcoin Portfolio managers generally combine fundamental analysis and technical analysis when assessing equities. As we have discussed, 'fundamental analysis' for cryptocurrency investors is a matter of evaluating developer draw and hardware draw. But because bitcoin trades like any other commodity, it is worth addressing the way market participants generally approach bitcoin price and trading.биржа bitcoin пожертвование bitcoin ethereum complexity hub bitcoin bitcoin сервер обменники bitcoin utxo bitcoin tor bitcoin monero прогноз bitcoin golden bitcoin calc
bitcoin desk взлом bitcoin работа bitcoin bitcoin kran ethereum перевод
миксер bitcoin
bitcoin changer qiwi bitcoin bitcoin приложение bazar bitcoin bitcoin exchanges yandex bitcoin ethereum обмен magic bitcoin bitcoin scan запуск bitcoin bitcoin genesis зарабатывать bitcoin tether wallet win bitcoin bitcoin разделился cryptocurrency mining bitcoin hub
bitcoin code bitcoin formula bitcoin зарабатывать invest bitcoin фермы bitcoin
spots cryptocurrency bitcoin телефон
it bitcoin bitcoin eu currency bitcoin bitcoin grant drip bitcoin cc bitcoin film bitcoin bitcoin bloomberg fork ethereum
bitcoin бот tracker bitcoin bitcoin background bitcoin landing логотип bitcoin ethereum сайт чат bitcoin курса ethereum bitcoin комиссия siiz bitcoin bitcoin online 2016 bitcoin monero asic bitcoin вклады cranes bitcoin bitcoin aliexpress ethereum torrent
bitcoin eth bitcoin script майнеры monero 1 bitcoin bitcoin dat ninjatrader bitcoin lite bitcoin ethereum coin bitcoin advcash ethereum пулы bitcoin карта bitcoin torrent monero blockchain bitmakler ethereum bitcoin 2048 ethereum wallet проекта ethereum
zebra bitcoin bitcoin weekly bitcoin hyip bitcoin dice
monero simplewallet криптовалют ethereum github ethereum 8 bitcoin bitcoin ads
обменники bitcoin tether download
рубли bitcoin bitcoin вебмани bitcoin selling circle bitcoin bitcoin краны fields bitcoin покер bitcoin bitcoin investing bitcoin q кошель bitcoin bitcoin virus bitcoin инструкция
poloniex monero
приложение bitcoin tether программа bitcoin litecoin ethereum логотип bitcoin server bitcoin fast
перспектива bitcoin шахта bitcoin ethereum cryptocurrency js bitcoin разработчик bitcoin iso bitcoin cryptonator ethereum 16 bitcoin nodes bitcoin биржа monero ethereum forks monero nvidia инструкция bitcoin метрополис ethereum bitcoin loto In the banking system defined above:bitcoin artikel xbt bitcoin The transaction fee is also very low. We all know that when we do a transaction through a bank, some amount of money or service charge is levied. However, with Bitcoin, this charge is very low.bitcoin hacker краны monero As of May 2020, 1 bitcoin equals $8741.81 dollars, and 1 ether equals $190.00.ethereum картинки rpg bitcoin multibit bitcoin брокеры bitcoin cryptocurrency top bitcoin surf bitcoin компьютер кран bitcoin bitcoin cz future bitcoin ann bitcoin bitcoin development
bitcoin смесители pools bitcoin bitcoin reserve bitcoin farm bitcoin казахстан bitcoin bow bitcoin обозреватель ethereum vk instant bitcoin bitcoin вложить china bitcoin blitz bitcoin bitcoin surf ethereum miners de bitcoin best cryptocurrency tether bootstrap ethereum casino kong bitcoin mail bitcoin bitcoin сложность bitcoin project кошель bitcoin bitcoin чат ethereum core monero node ethereum виталий fasterclick bitcoin bitcoin step bitcoin passphrase bitcoin segwit2x connect bitcoin create bitcoin pirates bitcoin bestchange bitcoin
bitcoin команды bitcoin protocol bitcoin circle account bitcoin bitcoin co rus bitcoin ethereum torrent bitcoin pool ethereum сбербанк bitcoin bloomberg average bitcoin plasma ethereum ethereum investing подтверждение bitcoin пузырь bitcoin bitcoin loan bitcoin motherboard бесплатные bitcoin зарабатывать bitcoin добыча bitcoin cryptocurrency mining проверка bitcoin monero news exchange cryptocurrency bitcoin email ann bitcoin перспектива bitcoin bitcoin bitrix
bitcoin kz Investing in Cryptocurrencycharts bitcoin ethereum info расширение bitcoin blogspot bitcoin bitcoin 15 mikrotik bitcoin bitcoin check bitcoin прогноз bcc bitcoin usb tether добыча ethereum bitcoin прогноз контракты ethereum bitcoin oil технология bitcoin bitcoin information 2016 bitcoin
moneybox bitcoin bitcoin pay bitcoin trinity bitcoin mac
sha256 bitcoin ethereum токены bitcoin server value bitcoin all cryptocurrency bitcoin футболка ethereum logo ethereum script bitcoin carding ethereum cryptocurrency bitcoin shop использование bitcoin bitcoin приложения bitcoin games transaction bitcoin
bitcoin robot
трейдинг bitcoin bitcoin pump bitcoin neteller bitrix bitcoin mt5 bitcoin ethereum токен
price bitcoin bitcoin live logo ethereum copay bitcoin In 2018, researchers presented possible vulnerabilities in a paper titled 'An Empirical Analysis of Traceability in the Monero Blockchain'. The Monero team responded in March 2018.Bitcoin's Perceived Value Swaysmonero калькулятор stealer bitcoin legal bitcoin оплатить bitcoin nodes bitcoin bitcoin 123 bitcoin nedir reddit bitcoin ethereum contract bitcoin plugin bitcoin ixbt token ethereum bitcoin автомат bitcoin play new cryptocurrency продаю bitcoin bitcoin обменники bitcoin china half bitcoin bitcoin work 999 bitcoin
bitcoin кошелек weekend bitcoin пулы monero bitcoin is bitcoin arbitrage брокеры bitcoin tether bootstrap gui monero ethereum bonus сигналы bitcoin bitcoin cryptocurrency bitcoin asic cryptocurrency market bitcoin anonymous
polkadot stingray monero usd Secure storage for a low pricebitcoin betting
CoinSwap – Another concept developed by Maxwell, CoinSwap is substantially different from CoinJoin in that it uses a series of four multisig transactions (two escrow payments, two escrow releases) to trustlessly swap coins between two parties. It is much less efficient than CoinJoin but can potentially offer much greater privacy, even facilitating the swapping of coins between different blockchains.криптовалюта tether рулетка bitcoin алгоритм bitcoin
bitcoin strategy r bitcoin bitcoin laundering trading cryptocurrency hd bitcoin bitcoin global scrypt bitcoin visa bitcoin bitcoin опционы bitcoin инвестиции bitcoin сервисы converter bitcoin ethereum com amazon bitcoin bitcoin cranes asics bitcoin monero пул ethereum платформа ethereum конвертер cz bitcoin bitcoin компьютер monero xmr боты bitcoin bitcoin electrum bitcoin exchanges
блок bitcoin часы bitcoin rx580 monero
today bitcoin котировка bitcoin Applying Proof of Concept (POC)ssl bitcoin bitcoin википедия preev bitcoin
monero ico bitcoin london
the ethereum bitcoin department скачать bitcoin
купить bitcoin neo bitcoin
bitcoin explorer bitcoin рост карты bitcoin locate bitcoin reindex bitcoin bitcoin робот bitcoin trend bitcoin pools bitcoin conference gadget bitcoin jax bitcoin ethereum install adc bitcoin bitcoin generator accelerator bitcoin bitcoin adress But there has been progress. Hundreds of dapps exist today on Ethereum, ranging from a Twitter replacement to a decentralized virtual reality game. Many are slow and difficult to use, but they give a taste of the potential for decentralized apps in the long term. Developers hope Ethereum 2.0, a long-awaited upgrade that officially started being rolled out on Dec. 1, 2020, will ease these problems in the coming years. The number of businesses accepting bitcoin continued to increase. In January 2017, NHK reported the number of online stores accepting bitcoin in Japan had increased 4.6 times over the past year. BitPay CEO Stephen Pair declared the company's transaction rate grew 3× from January 2016 to February 2017, and explained usage of bitcoin is growing in B2B supply chain payments.3d bitcoin bitcoin cny bitcoin qr bitcoin пирамиды ethereum android bitcoin hosting график bitcoin
bitcoin цена bitcoin перевод eos cryptocurrency pool monero japan bitcoin bitcoin акции mt5 bitcoin
cryptocurrency logo bitcoin motherboard
bitcoin markets keystore ethereum обменники bitcoin баланс bitcoin ethereum пулы 777 bitcoin bio bitcoin bitcoin tools bitcoin btc click bitcoin bitcoin de майнер bitcoin ico monero адрес bitcoin сложность monero bank cryptocurrency china bitcoin bitcoin автомат bitcoin безопасность cronox bitcoin
conference bitcoin mooning bitcoin bitcoin fpga bitcoin create nicehash bitcoin
wisdom bitcoin 33 bitcoin bitcoin usa
app bitcoin bitcoin 15 sgminer monero kurs bitcoin calculator cryptocurrency bitcoin ios стоимость bitcoin майнеры monero tether download ethereum txid bitcoin withdrawal generation bitcoin red bitcoin портал bitcoin bitcoin 2000 bitcoin dynamics bitcoin лучшие bitmakler ethereum etherium bitcoin What is Cryptocurrency Mining?настройка monero оборот bitcoin ethereum faucet fun bitcoin конец bitcoin konvert bitcoin bitcoin reindex bitcoin курс
bitcoin 2020 fork bitcoin bitcoin weekend bitcoin faucets bitcoin фильм ethereum обвал testnet bitcoin yota tether bitcoin 4096 exchanges bitcoin bitcoin 2048 форк bitcoin форум bitcoin bitcoin apk
перспективы ethereum ethereum stats bitcoin farm технология bitcoin bitcoin графики monero bitcoin окупаемость ethereum russia 6000 bitcoin bitcoin зарегистрировать
decred cryptocurrency bitcoin калькулятор coinmarketcap bitcoin ethereum com ethereum raiden сервер bitcoin casascius bitcoin zebra bitcoin sportsbook bitcoin bitcoin marketplace free ethereum bitcoin me make bitcoin майнить bitcoin bitcoin freebitcoin
яндекс bitcoin fast bitcoin bitcoin монеты bitcoin rt bitcoin телефон bitcoin classic bitcoin картинка capitalization cryptocurrency reklama bitcoin bitcoin check tokens ethereum gek monero bitcoin mine ethereum dag и bitcoin сборщик bitcoin ethereum видеокарты
ethereum course cryptocurrency arbitrage advcash bitcoin bitcoin 10000 расшифровка bitcoin finney ethereum bitcoin уполовинивание china bitcoin играть bitcoin капитализация ethereum ethereum прибыльность bank cryptocurrency bitcoin автосборщик bitcoin russia spend bitcoin monero пулы wallpaper bitcoin bitcoin grant bitcoin майнер bitcoin circle In early 2020, I revisited Bitcoin and became bullish. I recommended it as a small position in my premium research service on April 12th, and bought some bitcoins for myself on April 20th. The price was around $6,900 for that stretch of time. Since that period in April, Bitcoin quickly shot up to the $9,000+ range with 30%+ returns, but its price is highly volatile, so those gains may or may not be durable.Bitcoin exchanges have to register with FINTRACflypool monero bitcoin parser ubuntu bitcoin фонд ethereum While coins are minted, paper money are printed, digital money are mined.bitcoin me bitcoin monkey кости bitcoin 1080 ethereum salt bitcoin up bitcoin bitcoin бумажник bitcoin token заработок ethereum bitcoin nachrichten nova bitcoin
bitcoin презентация bitcoin зарегистрироваться ethereum cryptocurrency invest bitcoin block bitcoin korbit bitcoin bitcoin antminer token ethereum фермы bitcoin moto bitcoin bitcoin создать bitcoin drip bitcoin спекуляция
проект ethereum bitcoin xt 8 bitcoin
Oct. 31, 2008: A person or group using the name Satoshi Nakamoto makes an announcement on The Cryptography Mailing list at metzdowd.com: 'I've been working on a new electronic cash system that's fully peer-to-peer, with no trusted third party. This now-famous whitepaper published on bitcoin.org, entitled 'Bitcoin: A Peer-to-Peer Electronic Cash System,' would become the Magna Carta for how Bitcoin operates today.теханализ bitcoin bitcoin generate bitcoin баланс unconfirmed bitcoin bitcoin alpari
iso bitcoin captcha bitcoin bitcoin cz bitcoin игры мониторинг bitcoin bitcoin развод bitcoin талк bitcoin комиссия battle bitcoin
bitcoin code bitcoin dat
bitcoin doubler хардфорк monero заработать monero alpari bitcoin bitcoin super gift bitcoin bitcoin это bitcoin sha256 play bitcoin bitcoin перспективы bitcoin slots
bitcoin fire расчет bitcoin bitcoin cgminer bitcoin machine chart bitcoin bitcoin стратегия bitcoin fire bitcoin joker
bitcoin buying
click bitcoin
bitcoin sha256 wmz bitcoin bitcoin 10000
bitcoin links forum bitcoin habrahabr bitcoin пулы bitcoin moneybox bitcoin расчет bitcoin ethereum decred bitcoin charts bitcoin waves monero обменять EgyptOne motive of crypto-anarchists is to defend against surveillance of computer networks communication. Crypto-anarchists try to protect against government mass surveillance, such as PRISM, Tempora, telecommunications data retention, the NSA warrantless surveillance controversy, Room 641A, the FRA and so on. Crypto-anarchists consider the development and use of cryptography to be the main defense against such problems.bitcoin автосерфинг иконка bitcoin blog bitcoin ethereum shares cryptocurrency news Monero was developed with four core principles:вирус bitcoin oil bitcoin криптовалюта tether bitcoin государство майнинга bitcoin bitcoin converter gek monero логотип ethereum site bitcoin bitcoin c adbc bitcoin code bitcoin bitcoin talk app bitcoin poker bitcoin cudaminer bitcoin
биржа ethereum
forbes bitcoin кликер bitcoin bitcoin foto siiz bitcoin bitcoin miner bitcoin etf
polkadot store продам bitcoin окупаемость bitcoin bitcoin puzzle tether перевод bitcoin gpu ethereum os bitcoin продам demo bitcoin
bitcoin faucet reklama bitcoin bitcoin кэш bitcoin 100 github ethereum торговать bitcoin ethereum курсы bitcoin wm A hard fork is a change to a protocol that renders older versions invalid. If older versions continue running, they will end up with a different protocol and with different data than the newer version. This can lead to significant confusion and possible error.ethereum стоимость bitcoin cranes bitcoin цена bitcoin цена daemon monero bitcoin programming bitcoin froggy сколько bitcoin bitcoin бот config bitcoin arbitrage cryptocurrency
сервисы bitcoin *****a bitcoin bitcoin трейдинг ethereum coins bitcoin reddit автомат bitcoin l bitcoin робот bitcoin bitcoin future average bitcoin bitcoin iphone bitcoin skrill ios bitcoin monero стоимость cryptocurrency price bitcoin программирование monero gui abi ethereum шрифт bitcoin ubuntu bitcoin ethereum org
