A cryptocurrency’s blockchain is the master public ledger that records and stores all prior transactions and activity, validating ownership of all units of the currency at any given point in time.
In fact, every newly created blockchain copy comes with a two-part monetary reward: a fixed number of newly minted (“mined”) cryptocurrency units, and a variable number of existing units collected from optional transaction fees — typically less than 1% of the transaction value — paid by buyers.

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— “Those are among the more visible recent fruits of a well-funded campaign by Mr. Orban in the United States that stretches back a decade and now stands as a case study in how governments around the world seek to shape policies and debates in Washington, sometimes raising concerns about improper foreign influence in U.S. politics.”