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  2. Virtual currency - Wikipedia

    en.wikipedia.org/wiki/Virtual_currency

    Virtual currency, or virtual money, is a digital currency that is largely unregulated, issued and usually controlled by its developers, and used and accepted electronically among the members of a specific virtual community. [1] In 2014, the European Banking Authority defined virtual currency as "a digital representation of value that is neither ...

  3. Ripple Labs - Wikipedia

    en.wikipedia.org/wiki/Ripple_Labs

    Products. Ripple Payment and Exchange Network. Number of employees. 1,120 (2023) [2] Website. ripple.com. Ripple Labs, Inc. is an American technology company which develops the Ripple payment protocol and exchange network. Originally named Opencoin and renamed in 2015, the company was founded in 2012 and is based in San Francisco, California.

  4. Digital currency - Wikipedia

    en.wikipedia.org/wiki/Digital_currency

    Digital currency. Digital currency (digital money, electronic money or electronic currency) is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital currencies include cryptocurrency, virtual currency and central bank digital currency.

  5. Emin Gün Sirer - Wikipedia

    en.wikipedia.org/wiki/Emin_Gün_Sirer

    Introduced by Sirer and co-authors in 2003, five years before Satoshi Nakamoto’s Bitcoin whitepaper, Karma is a virtual currency for peer-to-peer systems, introduced by Sirer and co-authors in 2003. [8] It is designed to eliminate the free-loader problem, i.e. preventing malicious users from consuming resources without giving anything in return.

  6. Virtual manipulatives for mathematics - Wikipedia

    en.wikipedia.org/wiki/Virtual_manipulatives_for...

    Virtual manipulatives for mathematics. Virtual manipulatives for mathematics are digital representations of mathematics manipulatives based on the physical manipulatives used in classrooms. [1] They are generally used to introduce mathematical concepts using visuals and are used for teaching students new topics that may be more difficult to ...

  7. Cryptocurrency - Wikipedia

    en.wikipedia.org/wiki/Cryptocurrency

    A cryptocurrency, crypto-currency, or crypto [a] is a digital currency designed to work as a medium of exchange through a computer network that is not reliant on any central authority, such as a government or bank, to uphold or maintain it. [2]

  8. Virtual currency law in the United States - Wikipedia

    en.wikipedia.org/wiki/Virtual_currency_law_in...

    United States virtual currency law is financial regulation as applied to transactions in virtual currency in the U.S. The Commodity Futures Trading Commission has regulated and may continue to regulate virtual currencies as commodities. [1][2] The Securities and Exchange Commission also requires registration of any virtual currency traded in ...

  9. Manipulative (mathematics education) - Wikipedia

    en.wikipedia.org/wiki/Manipulative_(mathematics...

    Manipulative (mathematics education) In mathematics education, a manipulative is an object which is designed so that a learner can perceive some mathematical concept by manipulating it, hence its name. The use of manipulatives provides a way for children to learn concepts through developmentally appropriate hands-on experience.

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