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  2. 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 ...

  3. 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]

  4. Mining pool - Wikipedia

    en.wikipedia.org/wiki/Mining_pool

    Two key factors are involved in the algorithm that calculates profitability, the block time, and the price on the exchanges. To avoid the need for many different wallets for all possible minable coins, multipools may automatically exchange the mined coin to a coin that is accepted in the mainstream (for example bitcoin). Using this method ...

  5. Bitcoin’s price history: From its 2009 launch to its 2025 heights

    www.aol.com/finance/bitcoin-price-history-2009...

    Bitcoin peaked at nearly $49,000 in the days leading up to the announcement, but cooled somewhat in the weeks following. Money poured into the newly created Bitcoin ETFs in 2024, pushing the price ...

  6. Bitcoin Mining Profitability Falling with More Drops to Come ...

    www.aol.com/news/bitcoin-mining-profitability...

    Mining profitability levels for bitcoin are finally on the decline, according to a new report. And months of declining profitability may follow. Bitcoin Mining Profitability Falling with More ...

  7. Bitcoin Mining Profitability Starts Falling After Stellar ...

    www.aol.com/news/bitcoin-mining-profitability...

    The end of 2021′s crypto mining gold rush may have just started.

  8. 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. [251] By the end of 2021, bitcoin was estimated to produce 65.4 million tons of CO 2, as much as Greece, [252] and consume between 91 and 177 terawatt-hours annually ...

  9. Kelly criterion - Wikipedia

    en.wikipedia.org/wiki/Kelly_criterion

    Example of the optimal Kelly betting fraction, versus expected return of other fractional bets. In probability theory, the Kelly criterion (or Kelly strategy or Kelly bet) is a formula for sizing a sequence of bets by maximizing the long-term expected value of the logarithm of wealth, which is equivalent to maximizing the long-term expected geometric growth rate.