Ethereum addresses are composed of the prefix "0x", a common identifier for hexadecimal, concatenated with the rightmost 20 bytes of the Keccak-256 hash (big endian) of the ECDSA public key. In hexadecimal, 2 digits represents a byte, meaning addresses contain 40 hexadecimal digits. One example is 0xb794F5eA0ba39494cE839613fffBA74279579268, the Poloniex ColdWallet. Contract addresses are in the same format, however they are determined by sender and creation transaction nonce. User accounts are indistinguishable from contract accounts given only an address for each and no blockchain data. Any valid Keccak-256 hash put into the described format is valid, even if it does not correspond to an account with a private key or a contract. This is unlike Bitcoin, which uses base58check to ensure that addresses are properly typed.
By mining, you can earn cryptocurrency without having to put down money for it. That said, you certainly don't have to be a miner to own crypto. You can also buy crypto using fiat currency (USD, EUR, JPY, etc); you can trade it on an exchange like Bitstamp using other crypto (example: Using Ethereum or NEO to buy Bitcoin); you even can earn it by playing video games or by publishing blogposts on platforms that pay its users in crypto. An example of the latter is Steemit, which is kind of like Medium except that users can reward bloggers by paying them in a proprietary cryptocurrency called Steem. Steem can then be traded elsewhere for Bitcoin.
Keep in mind, Coinbase charges a 3.99% processing fee for all credit card transactions. I’d recommend using a credit card that gives you at least 3% cash back so you can offset some of the fees (I’ll cover the fee structure in more detail in the next section). You can use PayPay for selling currency, buy not buying currency; for PayPal the funds are available instantly but have lower payout limits. The bank account is usually your best bet.
While it’s still early days, Mist, MetaMask and a variety of other browsers look set to make blockchain-based applications accessible to more people than ever before. Even people without a technical background can now potentially build blockchain apps. This is a revolutionary leap for blockchain technology that could bring decentralized applications into the mainstream.
Acknowledgment, Acceptance of all Risks and Disclaimer of Warranties and Liabilities THE USER EXPRESSLY KNOWS AND AGREES THAT THE USER IS USING THE Ethereum PLATFORM AT THE USER’S SOLE RISK. THE USER REPRESENTS THAT THE USER HAS AN ADEQUATE UNDERSTANDING OF THE RISKS, USAGES AND INTRICACIES OF CRYPTOGRAPHIC TOKENS AND BLOCKCHAIN-BASED OPEN SOURCE SOFTWARE, ETH PLATFORM AND ETH. THE USER ACKNOWLEDGES AND AGREES THAT, TO THE FULLEST EXTENT PERMITTED BY ANY APPLICABLE LAW, THE DISCLAIMERS OF LIABILITY CONTAINED HEREIN APPLY TO ANY AND ALL DAMAGES OR INJURY WHATSOEVER CAUSED BY OR RELATED TO RISKS OF, USE OF, OR INABILITY TO USE, ETH OR THE Ethereum PLATFORM UNDER ANY CAUSE OF ACTION WHATSOEVER OF ANY KIND IN ANY JURISDICTION, INCLUDING, WITHOUT LIMITATION, ACTIONS FOR BREACH OF WARRANTY, BREACH OF CONTRACT OR TORT (INCLUDING NEGLIGENCE) AND THAT NEITHER Stiftung Ethereum NOR ETHEREUM TEAM SHALL BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES, INCLUDING FOR LOSS OF PROFITS, GOODWILL OR DATA. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF CERTAIN WARRANTIES OR THE LIMITATION OR EXCLUSION OF LIABILITY FOR CERTAIN TYPES OF DAMAGES. THEREFORE, SOME OF THE ABOVE LIMITATIONS IN THIS SECTION MAY NOT APPLY TO A USER. IN PARTICULAR, NOTHING IN THESE TERMS SHALL AFFECT THE STATUTORY RIGHTS OF ANY USER OR EXCLUDE INJURY ARISING FROM ANY WILLFUL MISCONDUCT OR FRAUD OF Stiftung Ethereum.
Feel free to use this thread to say 'Hi, I'm new!' or 'Hi, I'm not!'. If you have a question, feel free to comment and ask it below. But first make sure you are fully synchronized and have a look at FAQ on Ethereum Stack Exchange. Need help finding resources for beginners or have lots of questions and don't know where to start? Check out /r/ethereumnoobies! :D
Every single transaction made and the ownership of every single cryptocurrency in circulation is recorded in the blockchain. The blockchain is run by miners, who use powerful computers that tally the transactions. Their function is to update each time a transaction is made and also ensure the authenticity of information, thereby ascertaining that each transaction is secure and is processed properly and safely.
Coincheck is one of Japan’s largest cryptocurrency exchanges and offers leveraged trading in some digital coins for JPY (Japanese YEN) and vice versa, plus a spot buy/sell service, among others. The crypto exchange offers one type of account with a 1:5 leverage. But, users need to undergo a particularly strict verification process to use that account. Can you trust Coincheck despite the breach in security? See here for more detail.
Which is to say that MakerDAO, which launched the PETH token and related products near the end of last year, presently accounts for nearly one full percent of all ether in existence. While some feel that Dai’s practical applications are limited, it is taking a radical approach to a complex problem, with results that have not been overly disappointing. It has built-in mechanisms to liquidate positions which might destabilize the system at large:
BTCUSD update: The hard money continues. We got stopped out of another swing trade long recently which comes with the territory. And we were making every effort to be selective with our entry criteria. Our strategy is not flawed, it is just not the best one for this type of environment. So what is the more effective way to trade the hard money? Before I answer ...
An initial coin offering (ICO) is a controversial means of raising funds for a new cryptocurrency venture. An ICO may be used by startups with the intention of avoiding regulation. However, securities regulators in many jurisdictions, including in the U.S., and Canada have indicated that if a coin or token is an "investment contract" (e.g., under the Howey test, i.e., an investment of money with a reasonable expectation of profit based significantly on the entrepreneurial or managerial efforts of others), it is a security and is subject to securities regulation. In an ICO campaign, a percentage of the cryptocurrency (usually in the form of "tokens") is sold to early backers of the project in exchange for legal tender or other cryptocurrencies, often bitcoin or ether.
The User recognizes that the Ethereum Platform is under development and may undergo significant changes before release. The User acknowledges that any expectations regarding the form and functionality of the Ethereum Platform held by the User may not be met upon release of the Ethereum Platform, for any number of reasons including a change in the design and implementation plans and execution of the implementation of the Ethereum Platform.