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Beim professionellen Mining kommen ausschließlich Rechner mit hochperformanter und teils spezialisierter Hardware zum Einsatz. (Bild. Der Bergbau ist ein Teil der Montanindustrie. Man bezeichnet damit Aufsuchung und Erschließung, Gewinnung sowie Aufbereitung von Bodenschätzen aus der oberen Erdkruste unter Nutzung von technischen Anlagen und Hilfsmitteln. Wieder einer dieser Krypto-Begriffe: Beim Mining werden Bitcoins und Co "geschürft", heißt es. Der Brutkasten erklärt für Einsteiger die. Was ist Bitcoin Mining? Wie funktioniert Bitcoin Mining? Einen Hash erzeugen; Wie lässt sich sicherstellen, dass die Blockchain intakt bleibt und nie manipuliert. Verständliche und einfache Mining Erklärung. Erfahre hier, wieso und warum es Bitcoin und Krypto Miner gibt. ✅ Mining verstehen in
Der Bergbau ist ein Teil der Montanindustrie. Man bezeichnet damit Aufsuchung und Erschließung, Gewinnung sowie Aufbereitung von Bodenschätzen aus der oberen Erdkruste unter Nutzung von technischen Anlagen und Hilfsmitteln. Verständliche und einfache Mining Erklärung. Erfahre hier, wieso und warum es Bitcoin und Krypto Miner gibt. ✅ Mining verstehen in Was ist Bitcoin Mining? Mining ist das Thema bei Kryptowährungen, das am meisten falsch verstanden wird. Viele Leute denken beim.
Could you be next big winner? I consent to my submitted data being collected and stored. Just weeks ago, there were fears that miners had begun to capitulate.
Bitcoin blocks were slower than normal, transaction fees skyrocketed, and data analysts observed large outflows There were times when crypto mining was profitable even to the smallest hobbyist miner.
But with the languishing prices and high costs of equipment and energy, those days are very As Always, Economic All Rights Reserved.
Share Tweet Send Share. Prev Next. Tags: bitcoin , bitcoin mining , Bitmain , Cryptocurrency. Mining techniques can be divided into two common excavation types: surface mining and sub-surface underground mining.
Targets are divided into two general categories of materials: placer deposits , consisting of valuable minerals contained within river gravels, beach sands, and other unconsolidated materials ; and lode deposits , where valuable minerals are found in veins, in layers, or in mineral grains generally distributed throughout a mass of actual rock.
Both types of ore deposit, placer or lode, are mined by both surface and underground methods. Some mining, including much of the rare earth elements and uranium mining , is done by less-common methods, such as in-situ leaching : this technique involves digging neither at the surface nor underground.
The extraction of target minerals by this technique requires that they be soluble, e. Some minerals, such as copper minerals and uranium oxide , require acid or carbonate solutions to dissolve.
Surface mining is done by removing stripping surface vegetation, dirt, and, if necessary, layers of bedrock in order to reach buried ore deposits.
Most but not all placer deposits, because of their shallowly buried nature, are mined by surface methods. Finally, landfill mining involves sites where landfills are excavated and processed.
High wall mining is another form of surface mining that evolved from auger mining. In high wall mining, the coal seam is penetrated by a continuous miner propelled by a hydraulic Push-beam Transfer Mechanism PTM.
A typical cycle includes sumping launch-pushing forward and shearing raising and lowering the cutter-head boom to cut the entire height of the coal seam.
As the coal recovery cycle continues, the cutter-head is progressively launched into the coal seam for The Push-beam system can penetrate nearly 1, feet m into the coal seam.
One patented high wall mining system uses augers enclosed inside the Push-beam that prevent the mined coal from being contaminated by rock debris during the conveyance process.
Sub-surface mining consists of digging tunnels or shafts into the earth to reach buried ore deposits. Ore, for processing, and waste rock, for disposal, are brought to the surface through the tunnels and shafts.
Sub-surface mining can be classified by the type of access shafts used, and the extraction method or the technique used to reach the mineral deposit.
Drift mining utilizes horizontal access tunnels, slope mining uses diagonally sloping access shafts, and shaft mining utilizes vertical access shafts.
Mining in hard and soft rock formations require different techniques. Other methods include shrinkage stope mining , which is mining upward, creating a sloping underground room, long wall mining , which is grinding a long ore surface underground, and room and pillar mining, which is removing ore from rooms while leaving pillars in place to support the roof of the room.
Room and pillar mining often leads to retreat mining , in which supporting pillars are removed as miners retreat, allowing the room to cave in, thereby loosening more ore.
Additional sub-surface mining methods include hard rock mining , which is mining of hard rock igneous, metamorphic or sedimentary materials, bore hole mining, drift and fill mining, long hole slope mining, sub level caving, and block caving.
Heavy machinery is used in mining to explore and develop sites, to remove and stockpile overburden, to break and remove rocks of various hardness and toughness, to process the ore, and to carry out reclamation projects after the mine is closed.
Bulldozers, drills, explosives and trucks are all necessary for excavating the land. In the case of placer mining , unconsolidated gravel, or alluvium , is fed into machinery consisting of a hopper and a shaking screen or trommel which frees the desired minerals from the waste gravel.
The minerals are then concentrated using sluices or jigs. Large drills are used to sink shafts, excavate stopes, and obtain samples for analysis.
Trams are used to transport miners, minerals and waste. Lifts carry miners into and out of mines, and move rock and ore out, and machinery in and out, of underground mines.
Huge trucks, shovels and cranes are employed in surface mining to move large quantities of overburden and ore.
Processing plants utilize large crushers, mills, reactors, roasters and other equipment to consolidate the mineral-rich material and extract the desired compounds and metals from the ore.
Once the mineral is extracted, it is often then processed. The science of extractive metallurgy is a specialized area in the science of metallurgy that studies the extraction of valuable metals from their ores, especially through chemical or mechanical means.
Mineral processing or mineral dressing is a specialized area in the science of metallurgy that studies the mechanical means of crushing, grinding, and washing that enable the separation extractive metallurgy of valuable metals or minerals from their gangue waste material.
Processing of placer ore material consists of gravity-dependent methods of separation, such as sluice boxes.
Only minor shaking or washing may be necessary to disaggregate unclump the sands or gravels before processing. Processing of ore from a lode mine, whether it is a surface or subsurface mine, requires that the rock ore be crushed and pulverized before extraction of the valuable minerals begins.
After lode ore is crushed, recovery of the valuable minerals is done by one, or a combination of several, mechanical and chemical techniques.
Since most metals are present in ores as oxides or sulfides, the metal needs to be reduced to its metallic form. This can be accomplished through chemical means such as smelting or through electrolytic reduction, as in the case of aluminium.
Geometallurgy combines the geologic sciences with extractive metallurgy and mining. In , led by Chemistry and Biochemistry professor Bradley D.
Smith, University of Notre Dame researchers "invented a new class of molecules whose shape and size enable them to capture and contain precious metal ions," reported in a study published by the Journal of the American Chemical Society.
The new method "converts gold-containing ore into chloroauric acid and extracts it using an industrial solvent.
The container molecules are able to selectively separate the gold from the solvent without the use of water stripping. Environmental issues can include erosion , formation of sinkholes , loss of biodiversity , and contamination of soil , groundwater and surface water by chemicals from mining processes.
In some cases, additional forest logging is done in the vicinity of mines to create space for the storage of the created debris and soil.
Mining companies in most countries are required to follow stringent environmental and rehabilitation codes in order to minimize environmental impact and avoid impacting human health.
These codes and regulations all require the common steps of environmental impact assessment , development of environmental management plans, mine closure planning which must be done before the start of mining operations , and environmental monitoring during operation and after closure.
However, in some areas, particularly in the developing world, government regulations may not be well enforced.
For major mining companies and any company seeking international financing, there are a number of other mechanisms to enforce environmental standards.
These generally relate to financing standards such as the Equator Principles , IFC environmental standards, and criteria for Socially responsible investing.
Mining companies have used this oversight from the financial sector to argue for some level of industry self-regulation.
This was followed by the Global Mining Initiative which was begun by nine of the largest metals and mining companies and which led to the formation of the International Council on Mining and Metals , whose purpose was to "act as a catalyst" in an effort to improve social and environmental performance in the mining and metals industry internationally.
For example, ISO and ISO , which certify an "auditable environmental management system", involve short inspections, although they have been accused of lacking rigor.
Miscellaneous other certification programs exist for various projects, typically through nonprofit groups.
The purpose of a EPS PEAKS paper  was to provide evidence on policies managing ecological costs and maximise socio-economic benefits of mining using host country regulatory initiatives.
It found existing literature suggesting donors encourage developing countries to:. Ore mills generate large amounts of waste, called tailings.
For example, 99 tons of waste are generated per ton of copper, with even higher ratios in gold mining — because only 5.
These tailings can be toxic. Tailings, which are usually produced as a slurry , are most commonly dumped into ponds made from naturally existing valleys.
The waste is classified as either sterile or mineralised, with acid generating potential, and the movement and storage of this material forms a major part of the mine planning process.
When the mineralised package is determined by an economic cut-off, the near-grade mineralised waste is usually dumped separately with view to later treatment should market conditions change and it becomes economically viable.
Civil engineering design parameters are used in the design of the waste dumps, and special conditions apply to high-rainfall areas and to seismically active areas.
Waste dump designs must meet all regulatory requirements of the country in whose jurisdiction the mine is located.
It is also common practice to rehabilitate dumps to an internationally acceptable standard, which in some cases means that higher standards than the local regulatory standard are applied.
Many mining sites are remote and not connected to the grid. Electricity is typically generated with diesel generators.
Due to high transportation cost and theft during transportation the cost for generating electricity is normally high.
Renewable energy applications are becoming an alternative or amendment. Both solar and wind power plants can contribute in saving diesel costs at mining sites.
Renewable energy applications have been built at mining sites. Mining exists in many countries. In the developed world, mining in Australia , with BHP Billiton founded and headquartered in the country, and mining in Canada are particularly significant.
While exploration and mining can be conducted by individual entrepreneurs or small businesses, most modern-day mines are large enterprises requiring large amounts of capital to establish.
Consequently, the mining sector of the industry is dominated by large, often multinational, companies, most of them publicly listed.
It can be argued that what is referred to as the 'mining industry' is actually two sectors, one specializing in exploration for new resources and the other in mining those resources.
The exploration sector is typically made up of individuals and small mineral resource companies, called "juniors", which are dependent on venture capital.
The mining sector is made up of large multinational companies that are sustained by production from their mining operations.
Various other industries such as equipment manufacture, environmental testing, and metallurgy analysis rely on, and support, the mining industry throughout the world.
Canadian stock exchanges have a particular focus on mining companies, particularly junior exploration companies through Toronto's TSX Venture Exchange ; Canadian companies raise capital on these exchanges and then invest the money in exploration globally.
Mining operations can be grouped into five major categories in terms of their respective resources. These are oil and gas extraction, coal mining, metal ore mining, nonmetallic mineral mining and quarrying, and mining support activities.
Prospecting potential mining sites, a vital area of concern for the mining industry, is now done using sophisticated new technologies such as seismic prospecting and remote-sensing satellites.
Mining is heavily affected by the prices of the commodity minerals, which are often volatile. The s commodities boom "commodities supercycle" increased the prices of commodities, driving aggressive mining.
New regulations and a process of legislative reforms aim to improve the harmonization and stability of the mining sector in mineral-rich countries.
Increasing debate and influence by NGOs and local communities called for a new approaches which would also include disadvantaged communities, and work towards sustainable development even after mine closure including transparency and revenue management.
By the early s, community development issues and resettlements became mainstream concerns in World Bank mining projects.
Furthermore, this highlighted regional and local demand for mining revenues and an inability of sub-national governments to effectively use the revenues.
The Fraser Institute a Canadian think tank has highlighted [ clarification needed ] the environmental protection laws in developing countries, as well as voluntary efforts by mining companies to improve their environmental impact.
The entrance process is voluntary for each country and is monitored by multiple stakeholders including governments, private companies and civil society representatives, responsible for disclosure and dissemination of the reconciliation report;  however, the competitive disadvantage of company-by company public report is for some of the businesses in Ghana at least, the main constraint.
On the other hand, implementation has issues; inclusion or exclusion of artisanal mining and small-scale mining ASM from the EITI and how to deal with "non-cash" payments made by companies to subnational governments.
Furthermore, the disproportionate revenues the mining industry can bring to the comparatively small number of people that it employs,  causes other problems, like a lack of investment in other less lucrative sectors, leading to swings in government revenuebecause of volatility in the oil markets.
Congo, Guinea, Liberia and Sierra Leone — i. Public awareness increase, where government should act as a bridge between public and initiative for a successful outcome of the policy is an important element to be considered.
The World Bank has been involved in mining since , mainly through grants from its International Bank for Reconstruction and Development , with the Bank's Multilateral Investment Guarantee Agency offering political risk insurance.
These projects have been criticized, particularly the Ferro Carajas project of Brazil, begun in In the World Bank began to push for privatization of government-owned mining companies with a new set of codes, beginning with its report The Strategy for African Mining.
These and other developments such as the Philippines Mining Act led the bank to publish a third report Assistance for Minerals Sector Development and Reform in Member Countries which endorsed mandatory environment impact assessments and attention to the concerns of the local population.
The codes based on this report are influential in the legislation of developing nations. The new codes are intended to encourage development through tax holidays, zero custom duties, reduced income taxes, and related measures.
Safety has long been a concern in the mining business, especially in sub-surface mining. This disaster was surpassed only by the Benxihu Colliery accident in China on April 26, , which killed 1, miners.
Government figures indicate that 5, Chinese miners die in accidents each year, while other reports have suggested a figure as high as 20, There are numerous occupational hazards associated with mining, including exposure to rockdust which can lead to diseases such as silicosis , asbestosis , and pneumoconiosis.
Gases in the mine can lead to asphyxiation and could also be ignited. Mining equipment can generate considerable noise, putting workers at risk for hearing loss.
Cave-ins , rock falls , and exposure to excess heat are also known hazards. All Rights Reserved. Read More. Anatol Antonovici 4 months ago.
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Any difference between the total input and output amounts of a transaction goes to miners as a transaction fee. To form a distributed timestamp server as a peer-to-peer network, bitcoin uses a proof-of-work system.
Requiring a proof of work to accept a new block to the blockchain was Satoshi Nakamoto 's key innovation. The mining process involves identifying a block that, when hashed twice with SHA , yields a number smaller than the given difficulty target.
While the average work required increases in inverse proportion to the difficulty target, a hash can always be verified by executing a single round of double SHA For the bitcoin timestamp network, a valid proof of work is found by incrementing a nonce until a value is found that gives the block's hash the required number of leading zero bits.
Once the hashing has produced a valid result, the block cannot be changed without redoing the work. As later blocks are chained after it, the work to change the block would include redoing the work for each subsequent block.
Majority consensus in bitcoin is represented by the longest chain, which required the greatest amount of effort to produce.
If a majority of computing power is controlled by honest nodes, the honest chain will grow fastest and outpace any competing chains.
To modify a past block, an attacker would have to redo the proof-of-work of that block and all blocks after it and then surpass the work of the honest nodes.
The probability of a slower attacker catching up diminishes exponentially as subsequent blocks are added.
To compensate for increasing hardware speed and varying interest in running nodes over time, the difficulty of finding a valid hash is adjusted roughly every two weeks.
If blocks are generated too quickly, the difficulty increases and more hashes are required to make a block and to generate new bitcoins.
Bitcoin mining is a competitive endeavor. An " arms race " has been observed through the various hashing technologies that have been used to mine bitcoins: basic CPUs , high-end GPUs common in many gaming computers , FPGAs and ASICs all have been used, each reducing the profitability of the less-specialized technology.
The difficulty within the mining process involves self-adjusting to the network's accumulated mining power.
As bitcoins have become more difficult to mine, computer hardware manufacturing companies have seen an increase in sales of high-end ASIC products.
Computing power is often bundled together or "pooled" to reduce variance in miner income. Individual mining rigs often have to wait for long periods to confirm a block of transactions and receive payment.
In a pool, all participating miners get paid every time a participating server solves a block. This payment depends on the amount of work an individual miner contributed to help find that block.
In , Mark Gimein estimated electricity consumption to be about As of [update] , The Economist estimated that even if all miners used modern facilities, the combined electricity consumption would be Seeking lower electricity costs, some bitcoin miners have set up in places like Iceland where geothermal energy is cheap and cooling Arctic air is free.
A rough overview of the process to mine bitcoins involves: . By convention, the first transaction in a block is a special transaction that produces new bitcoins owned by the creator of the block.
This is the incentive for nodes to support the network. The reward for mining halves every , blocks. It started at 50 bitcoin, dropped to 25 in late and to The most recent halving, which occurred in May with block number , , reduced the block reward to 6.
This halving process is programmed to continue a maximum 64 times before new coin creation ceases. Various potential attacks on the bitcoin network and its use as a payment system, real or theoretical, have been considered.
The bitcoin protocol includes several features that protect it against some of those attacks, such as unauthorized spending, double spending, forging bitcoins, and tampering with the blockchain.
Other attacks, such as theft of private keys, require due care by users. Unauthorized spending is mitigated by bitcoin's implementation of public-private key cryptography.
For example; when Alice sends a bitcoin to Bob, Bob becomes the new owner of the bitcoin. Eve observing the transaction might want to spend the bitcoin Bob just received, but she cannot sign the transaction without the knowledge of Bob's private key.
A specific problem that an internet payment system must solve is double-spending , whereby a user pays the same coin to two or more different recipients.
An example of such a problem would be if Eve sent a bitcoin to Alice and later sent the same bitcoin to Bob.
The bitcoin network guards against double-spending by recording all bitcoin transfers in a ledger the blockchain that is visible to all users, and ensuring for all transferred bitcoins that they haven't been previously spent.
If Eve offers to pay Alice a bitcoin in exchange for goods and signs a corresponding transaction, it is still possible that she also creates a different transaction at the same time sending the same bitcoin to Bob.
By the rules, the network accepts only one of the transactions. This is called a race attack , since there is a race which transaction will be accepted first.
Alice can reduce the risk of race attack stipulating that she will not deliver the goods until Eve's payment to Alice appears in the blockchain.
A variant race attack which has been called a Finney attack by reference to Hal Finney requires the participation of a miner.
Instead of sending both payment requests to pay Bob and Alice with the same coins to the network, Eve issues only Alice's payment request to the network, while the accomplice tries to mine a block that includes the payment to Bob instead of Alice.
There is a positive probability that the rogue miner will succeed before the network, in which case the payment to Alice will be rejected.
As with the plain race attack, Alice can reduce the risk of a Finney attack by waiting for the payment to be included in the blockchain.
Each block that is added to the blockchain, starting with the block containing a given transaction, is called a confirmation of that transaction.
Ideally, merchants and services that receive payment in bitcoin should wait for at least one confirmation to be distributed over the network, before assuming that the payment was done.
Deanonymisation is a strategy in data mining in which anonymous data is cross-referenced with other sources of data to re-identify the anonymous data source.
Along with transaction graph analysis, which may reveal connections between bitcoin addresses pseudonyms ,   there is a possible attack  which links a user's pseudonym to its IP address.
If the peer is using Tor , the attack includes a method to separate the peer from the Tor network, forcing them to use their real IP address for any further transactions.
The attack makes use of bitcoin mechanisms of relaying peer addresses and anti- DoS protection. Each miner can choose which transactions are included in or exempted from a block.
Upon receiving a new transaction a node must validate it: in particular, verify that none of the transaction's inputs have been previously spent.
To carry out that check, the node needs to access the blockchain. Any user who does not trust his network neighbors, should keep a full local copy of the blockchain, so that any input can be verified.
As noted in Nakamoto's whitepaper, it is possible to verify bitcoin payments without running a full network node simplified payment verification, SPV.
A user only needs a copy of the block headers of the longest chain, which are available by querying network nodes until it is apparent that the longest chain has been obtained.
Then, get the Merkle tree branch linking the transaction to its block. Linking the transaction to a place in the chain demonstrates that a network node has accepted it, and blocks added after it further establish the confirmation.
While it is possible to store any digital file in the blockchain, the larger the transaction size, the larger any associated fees become.
Various items have been embedded, including URLs to child pornography, an ASCII art image of Ben Bernanke , material from the Wikileaks cables , prayers from bitcoin miners, and the original bitcoin whitepaper.
The use of bitcoin by criminals has attracted the attention of financial regulators, legislative bodies, law enforcement, and the media.
Senate held a hearing on virtual currencies in November Several news outlets have asserted that the popularity of bitcoins hinges on the ability to use them to purchase illegal goods.
Underfitting, on the contrary, refers to a model that can neither model the training data nor generalize to new data. In other words, it is the inability to model the training data with critical information.
Data Analytics and Data Mining are two very similar disciplines, both being subsets of Business Intelligence.
This explains why Mining of data is based more on mathematical and scientific concepts while Data Analytics uses business intelligence principles.
Data Analytics, on the other hand, is an entire gamut of activities which takes care of the collection, preparation, and modeling of data for extracting meaningful insights or knowledge.
Data Analytics research can be done on both structured, semi-structured or unstructured data. Let us find out how they impact each other.
It may be explained as a cross-disciplinary field that focuses on discovering the properties of data sets.
Machine Learning is a subfield of Data Science that focuses on designing algorithms that can learn from and make predictive analyses.
It involves both Supervised Learning and Unsupervised Learning methods. Unsupervised methods actually start off from unlabeled data sets, so, in a way, they are directly related to finding out unknown properties in them e.
Machine Learning can be used for Data Mining. However, it can use other techniques besides or on top of machine learning.
Does a career in Data Mining appeal you? You may start as a data analyst and with some years of experience, you can be data science professional too, having the option of taking up a full-time job or as a consultant.
One may take up an advanced degree in this course. An advanced course in Data Mining would teach you the inner workings of algorithms with Tree Viewer and Nomogram to help you understand Classification Tree and Logistic Regression.
You may also go for a combined course in Data Mining and Data Analytics. It aids to learn about the major techniques for mining and analyzing text data to discover interesting patterns.
In addition, it helps to extract useful knowledge, and support decision making, with an emphasis on statistical approaches.
You will also need to learn detailed analysis of text data. Prior knowledge of statistical approaches helps in robust analysis of text data for pattern finding and knowledge discovery.
One would also learn to interactively explore the dendrogram, read the documents from selected clusters, observe the corresponding images, and locate them on a map.
The industry-relevant curriculum, pragmatic market-ready approach, hands-on Capstone Project are some of the best reasons to gain insights on.
A self-starter technical communicator, capable of working in an entrepreneurial environment producing all kinds of technical content including system manuals, product release notes, product user guides, tutorials, software installation guides, technical proposals, and white papers.
Plus, an avid blogger and Social Media Marketing Enthusiast. Learn the Journey of a Data Scientist. Course: Data Science Master Course.
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Bonani Bose. Targets are divided into two general categories of materials: placer deposits, consisting of valuable minerals contained within river gravels, beach sands, and other unconsolidated materials; and lode deposits, where valuable minerals are found in veins, in layers, or in mineral grains generally distributed throughout a mass of actual rock.
Both types of ore deposit, placer or lode, are mined by both surface and underground methods. Some mining, including much of the rare earth elements and uranium mining, is done by less-common methods, such as in-situ leaching: this technique involves digging neither at the surface nor underground.
The extraction of target minerals by this technique requires that they be soluble, e. Some minerals, such as copper minerals and uranium oxide, require acid or carbonate solutions to dissolve.
Exploration A mining operation begins with prospecting and exploration -- stages with long periods of investment and high risk of failure.Weltweit stellen Personen ihre Rechenleistung zur Verfügung, damit neue Bitcoin ausgegeben werden können. Transaktionsgebühren erhalten kannst. Weil du an die Technologie glaubst und möchtest, dass sein Wert und die Stabilität des More info zunehmen, https://q-eye.co/casino-war-online/beste-spielothek-in-friedrichsruhe-finden.php du Rechenleistung hinein. Diesen muss man dann erstmal mit dem Minen erwirtschaften. Login Registrierung. Die berühmteste Kryptowährung ist der Bitcoin. Mehr zum Thema Blockchain. Die Firmen versprechen, Mining-Equipment in Ländern mit niedrigen Stromkosten aufzustellen und Rechenkapazität an ihre Kunden zu vermieten. Entdecke Storypages. Share on twitter. Viele dieser Firmen, die Bingo Spiel sogenannte Cloud-Mining betreiben, haben sich im Nachhinein als Pyramidensystem entpuppt und ihre Kunden um ihre Geld erleichtert. Doch auch dann steige man letztlich besser aus, wenn man article source in Cloud Mining direkt in die Währung investiert. Sponsored Content.