Introduction to blockchain and cryptocurrency

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Cryptocurrencies At the time of writing, on 5 April 2025, there are approximately 17,134 cryptocurrencies in existence, although only around 10,385 are actively traded and valuable. The aggregate market capitalisation of all cryptocurrencies is estimated at $2.69 trillion, Bitcoin represents 61.37% of the total cryptocurrency market capitalisation, which currently stands at $2.71 trillion....