1) Irreversible: After confirmation, a transaction can‘t be reversed. By nobody. And nobody means nobody. Not you, not your bank, not the president of the United States, not Satoshi, not your miner. Nobody. If you send money, you send it. Period. No one can help you, if you sent your funds to a scammer or if a hacker stole them from your computer. There is no safety net.
All of those factors make mining cryptocurrencies an extremely competitive arms race that rewards early adopters. However, depending on where you live, profits made from mining can be subject to taxation and Money Transmitting regulations. In the US, the FinCEN has issued a guidance, according to which mining of cryptocurrencies and exchanging them for flat currencies may be considered money transmitting. This means that miners might need to comply with special laws and regulations dealing with this type of activities.
A crypto hash (or the tx/transaction ID) is a unique address of your transaction in a blockchain. Mostly, the hash is a combination of digits and lower case (upper in Ripple) letters that represents a proof that money is sent. Whenever you make a payment, you receive a hash displayed in your wallet. Hash should be located in a blockchain. Our support team may ask you to provide a hash. Sometimes it’s required to find your payment and resolve your issues if any.

Like Bitcoin, Dash is meant to be used as a digital currency but has some added values such as much faster transaction times and lower fees. For a slightly higher fee, Dash has the added function of “instant send” which allows transactions to be confirmed almost instantly. This is one of the main selling points of Dash because many believe that this feature would allow it to be used in brick and mortar establishments.

WICHTIGE INFORMATIONEN ZUM HAFTUNGSAUSSCHLUSS: Alle unsere auf unserer Website, auf per Hyperlink verknüpften Websites, in verbundenen Anwendungen, in Foren, in Blogs, in sozialen Netzwerken und auf anderen Plattformen („Website”) veröffentlichten Inhalte dienen nur Informationszwecken und werden von Drittparteien gepflegt. In Bezug auf diese Inhalte geben wir keinerlei Garantien unter anderem hinsichtlich Richtigkeit und Aktualität. Die von uns bereitgestellten Inhalte stellen keinerlei Finanzberatung, Rechtsberatung oder sonstige Beratung zu irgendeinem Zweck dar. Die Nutzung oder Zugrundelegung unserer Inhalte erfolgt auf dein eigenes Risiko und nach deinem eigenen Gutdünken. Bevor du dich auf diese Inhalte stützt, solltest du deine eigene Untersuchung, Prüfung und Analyse sowie eine Verifizierung unserer Inhalte durchführen. Der Handel mit Kryptowährungen ist sehr riskant und kann zu enormen Verlusten führen. Wende dich daher an deinen Finanzberater, bevor du eine finanzielle Entscheidung triffst. Die auf unserer Website bereitgestellten Inhalte dienen in keinem Fall als Aufforderung oder Angebot.

ELcurrency are influenced products. ELcurrency associated with foreign exchange, common assets and other underlying variables, involves a high level of risk and a possibility of loss of some or all of your investment.Please consider carefully whether trading or investing in bitcoin is appropriate to your financial situation. Only risk capital should be used when trading or investing in bitcoin. You must review Terms of Service and this Risk Disclosure prior to establishing an account.
Monero (XMR) was created in April 2014 and focuses on privacy, decentralization and scalability. It is a secure, private and untraceable currency system. Monero uses a special kind of cryptography to ensure that all of its transactions remain 100% unlinkable and untraceable. The word ‘Monero’ comes from the language Esperanto where it literally means ‘coin’.
If a coin isn’t in the top 50 – 100 on CoinMarketCap.com, it is not a safe and sound investment for someone who wants to see a return as a rule of thumb. Once in a while I invest in coins in the 100 – 200 by market cap range, but this is after research and is very case specific. Further down the list we go, the less demand essentially. We want to be in coins that have enough demand to sell them later (hopefully at a profit)!
Ethereum (ETH) is more than just a currency – it’s like one giant computer housing many computers around the globe. Ethereum can respond to sophisticated requests. Its ability to store revolutionary computer programs, known as smart contracts, gives Ethereum an edge over Bitcoin and has attracted attention from banks around the world. This, among other factors, has led to a jump of almost 10,000% in 2017!
Follow our (and your own) rules and you will be able to take advantage over the people who don’t. Also, you will be able to detect which cryptocurrencies are scams and which have potential to skyrocket like Bitcoin. This shall be a journey, which we will take with you, where we will try to find the safest and most promising opportunities on the crypto-market! 
Nach der Lektüre des Buches kann man Meldungen, Artikel und Blogeinträge zum Thema besser einordnen und fühlt sich in der Welt der virtuellen Währungen ein wenig zu Hause. Und dann kann jeder für sich entscheiden, ob er als stiller - nun Wissender - diese neu entstehende Welt bestaunen möchte, ob er vielleicht selber ein wenig rumexperimentiert und mit Wallets erste Erfahrungen sammelt, oder ob er diese Welt des digitalen dezentralen Vertrauens in Zukunft selber mit gestalten möchte.
Nxt: Not only does this nifty coin sport a name similar to Steve Job’s other company; it uses a cool and different algorithm for producing coins. This algorithm – an implementation of a proof-of-stake scheme rather than proof-of-work – may be less burdensome on the environment and has long-term potential. It may be worth a tad less than the other coins we recommend; it is worth about a penny on the dollar on a good day. However, less cost per coin means you have less to lose if the coin value deflates. Nxt is like Namecoin. It had a super cool code but didn’t though perform at the same level as other cryptos (until late 2017 where it saw a notable price hike). It is still priced very low in USD.
Groestlcoin is a privacy centric Peer-to-Peer (P2P) cryptocurrency that was launched in 2014. It was developed to be an ASIC resistant version of Bitcoin. They were able to achieve a number of important firsts including being the first coin to implement Segregated Witness and it was also the first to perform a Lightning Network transaction on the mainnet Groestlcoin is a PoW cryptocurrency and it is unique in that it is one of the few coins that make use of the Grøstl-512 mining algorithm. This is less complex than Bitcoin's algorithm which means that it is still possible to mine this coin with your GPU. There is a maximum supply of 105 million GRS and so far, just over 72 million are in circulation. The coin also has a much shorter block time of only 1 minutes with a large total supply and weekly subsidy halvings. This all contributes to cheap and fast transaction times. You can send 10,000 GRS and the cost will be far less than a penny. The developers behind the Groestlcoin project are anonymous but have a well-established reputation in the community. This team has been regularly updating the protocol as evidenced by the extremely active GitHub repositories. The project has some of the most active repositories in the cryptocurrency market currently. There is also a pretty active community behind Groestlcoin which could be an invaluable factor when it comes to long term adoption of the coin. GRS has had quite a rocky ride since its initial listings on exchanges back in 2014. It reached an all time high in the 2018 bull run of $1.64. However, since the bear market has begun to bite it has followed the rest of the market lower. GRS is currently listed on a number of exchanges although the bulk of the volume is on UpBit and Binance. There is strong volume and liquidity in the token on these exchanges but the tokens remain quite volatile.
You don‘t need to understand details about SHA 256. It‘s only important you know that it can be the basis of a cryptologic puzzle the miners compete to solve. After finding a solution, a miner can build a block and add it to the blockchain. As an incentive, he has the right to add a so-called coinbase transaction that gives him a specific number of Bitcoins. This is the only way to create valid Bitcoins.
Homero Josh Garza, who founded the cryptocurrency startups GAW Miners and ZenMiner in 2014, acknowledged in a plea agreement that the companies were part of a pyramid scheme, and pleaded guilty to wire fraud in 2015. The U.S. Securities and Exchange Commission separately brought a civil enforcement action against Garza, who was eventually ordered to pay a judgment of $9.1 million plus $700,000 in interest. The SEC's complaint stated that Garza, through his companies, had fraudulently sold "investment contracts representing shares in the profits they claimed would be generated" from mining.[70]
Anyone who has ever sent money internationally knows that today it currently takes anywhere from 3-5 business days for a transaction to clear. It is faster to withdraw money, get on a plane, and fly it to your destination than it is to send it electronically! Not to mention you will be paying exorbitant transaction fees — usually somewhere around 6% but it can vary depending on the financial institution.
Like Bitcoin, Dash is meant to be used as a digital currency but has some added values such as much faster transaction times and lower fees. For a slightly higher fee, Dash has the added function of “instant send” which allows transactions to be confirmed almost instantly. This is one of the main selling points of Dash because many believe that this feature would allow it to be used in brick and mortar establishments.

In each transaction, there is always a sender and a recipient. The recipient’s address is the cryptocurrency wallet address to receive the money you want to buy. For example, if you want to buy Ethereum (ETH), in the field, you should specify the ETH wallet address. In general, the recipient’s wallet address is the address we send coins bought, once a transaction is finished.
Hey there! I am Sudhir Khatwani, an IT bank professional turned into a cryptocurrency and blockchain proponent from Pune, India. Cryptocurrencies and blockchain will change human life in inconceivable ways and I am here to empower people to understand this new ecosystem so that they can use it for their benefit. You will find me reading about cryptonomics and eating if I am not doing anything else.
When issuing a transaction in IOTA, you validate 2 previous transactions. This means you no longer outsource validation to miners which requires wasteful amounts of computing power and usually a large stake of coins. These required resources are, in effect, centralizing the currencies which many believe were created to be decentralized in the first place.  
On cryptocurrency mining: As noted, one way to invest in cryptocurrency is via cryptocurrency mining. That is a valid way to start investing if say you love computer gaming and need a new rig and want to invest in small amounts of cryptocurrency while maybe making back some of the cost of the rig (and maybe even breaking even) but that is an entirely different subject. The average investor will want to trade USD for cryptocurrency on an exchange and avoid the complexities and investments of mining. In all cases, unless you already have a good rig with a great graphics card, you’ll need to put down USD upfront anyway.

I prefer to trade on decentralized exchanges. For myself, I made a choice in the form of ethnermium.сom. They have a huge number of coins. There are no minimum restrictions on trade and fees are so insignificant that you will not notice them. I also think the advantage of the easy creation of a wallet like MeW and easy integration with metamasks and a high level of security
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.[47][48][49]
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