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  2. Hold Bitcoin? You Need to Understand These Charts Right Now

    www.aol.com/finance/hold-bitcoin-understand...

    Bitcoin Price data by YCharts. The first chart depicts the five-year price history of Bitcoin and the SPDR S&P 500 ETF Trust (NYSEMKT: SPY), an exchange-traded fund (ETF) that performs in ...

  3. Regression theorem - Wikipedia

    en.wikipedia.org/wiki/Regression_theorem

    Since Bitcoin (for instance) is not backed by any commodity, it appears to fail the definition of a currency according to the Regression Theorem. Others hold the view [4] that Bitcoin does fit the definition as it is at once a payment system and money, with the source of value being the payment system.

  4. Bitcoin - Wikipedia

    en.wikipedia.org/wiki/Bitcoin

    Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 by Satoshi Nakamoto, an unknown person. [5] Use of bitcoin as a currency began in 2009, [6] with the release of its open-source implementation. [7]: ch. 1 In 2021, El Salvador adopted it as legal tender ...

  5. Cryptocurrency - Wikipedia

    en.wikipedia.org/wiki/Cryptocurrency

    By November 2018, bitcoin was estimated to have an annual energy consumption of 45.8TWh, generating 22.0 to 22.9 million tons of CO 2, rivalling nations like Jordan and Sri Lanka. [252] By the end of 2021, bitcoin was estimated to produce 65.4 million tons of CO 2, as much as Greece, [253] and consume between 91 and 177 terawatt-hours annually ...

  6. Regression control chart - Wikipedia

    en.wikipedia.org/wiki/Regression_control_chart

    Regression control chart differs from a traditional control chart in four main aspects: It is designed to control a varying (rather than a constant) average. The control limit lines are parallel to the regression line rather than the horizontal line. The computations here are much more complex. It is appropriate for use in more complex ...

  7. Fibonacci retracement - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_retracement

    Fibonacci retracement levels shown on the USD/CAD currency pair.In this case, price retraced approximately 38.2% of a move down before continuing. In finance, Fibonacci retracement is a method of technical analysis for determining support and resistance levels. [1]

  8. Bitcoin scalability problem - Wikipedia

    en.wikipedia.org/wiki/Bitcoin_scalability_problem

    The Bitcoin scalability problem refers to the limited capability of the Bitcoin network to handle large amounts of transaction data on its platform in a short span of time. [1] It is related to the fact that records (known as blocks ) in the Bitcoin blockchain are limited in size and frequency.

  9. Economics of bitcoin - Wikipedia

    en.wikipedia.org/wiki/Economics_of_bitcoin

    A bitcoin ATM in California. Bitcoins can be bought and sold both on- and offline. Participants in online exchanges offer bitcoin buy and sell bids.Using an online exchange to obtain bitcoins entails some risk, and, according to a study published in April 2013, 45% of exchanges fail and take client bitcoins with them. [30]

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