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  2. Environmental impact of bitcoin - Wikipedia

    en.wikipedia.org/.../Environmental_impact_of_bitcoin

    [23] [24] A 2024 study published in Heliyon simulated that a solar-powered bitcoin mining system could achieve a return on investment in 3.5 years compared to 8.1 years for selling electricity to the grid, while preventing 50,000 tons of CO2 emissions annually. [25] The authors note that proof-of-stake cryptocurrencies cannot provide these ...

  3. Return on investment - Wikipedia

    en.wikipedia.org/wiki/Return_on_investment

    Return on investment (ROI) or return on costs (ROC) is the ratio between net income (over a period) and investment (costs resulting from an investment of some resources at a point in time). A high ROI means the investment's gains compare favourably to its cost.

  4. Bitcoin - Wikipedia

    en.wikipedia.org/wiki/Bitcoin

    The domain name bitcoin.org was registered on 18 August 2008. [15] On 31 October 2008, a link to a white paper authored by Satoshi Nakamoto titled Bitcoin: A Peer-to-Peer Electronic Cash System was posted to a cryptography mailing list. [16] Nakamoto implemented the bitcoin software as open-source code and released it in January 2009. [6]

  5. Best Crypto ETFs of November 2024 - AOL

    www.aol.com/best-crypto-etfs-april-2024...

    Expense ratio: 0.20%. Top 5 holdings: Bitcoin. Bitwise is another popular spot bitcoin ETF that offers a low expense ratio and direct exposure to the spot price of bitcoin itself. Bitwise is a ...

  6. Bitcoin, altcoins, and the return of ‘risk on’ - AOL

    www.aol.com/finance/bitcoin-altcoins-return-risk...

    It's felt like old times in the crypto markets as traders celebrated the first proper "Uptober" (October in crypto speak) in a while, with Bitcoin gaining around 28% by month's end.

  7. Bitcoin’s Sliding Put-Call Ratio Points to Weakening Bearish ...

    www.aol.com/news/bitcoin-sliding-put-call-ratio...

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  8. 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]

  9. Rate of return on a portfolio - Wikipedia

    en.wikipedia.org/wiki/Rate_of_return_on_a_portfolio

    The rate of return on a portfolio can be calculated indirectly as the weighted average rate of return on the various assets within the portfolio. [3] The weights are proportional to the value of the assets within the portfolio, to take into account what portion of the portfolio each individual return represents in calculating the contribution of that asset to the return on the portfolio.

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