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It seemed that the dream of "digital currency" was born to die... until the year 2008.

In that year, a person – or perhaps a group of people – appeared under the pseudonym Satoshi Nakamoto. Satoshi published a scientific paper proposing an electronic cash system that relies not on trust but on encryption and programming. That paper was the first announcement of Bitcoin.

In 2009, the Bitcoin network was officially launched. Initially, it was nothing more than an experiment among a group of programmers, but it was revolutionary: for the first time, digital "money" could be sent from one person to another without an intermediary. The blockchain – the technology that underpins Bitcoin – was the key, as it maintains a permanent and open record of all transactions, without being subject to a central authority.

As the years went by, Bitcoin began to attract attention, first from enthusiasts and programmers, then from investors, and finally from global media. Soon, other digital currencies emerged, such as Ethereum in 2015, which was not only a currency but also a platform for creating decentralized applications using what is known as "smart contracts."

By the second decade of the 21st century, digital currencies transformed from a strange experiment into part of the global conversation about the future of money. Some countries resisted them, while others began to regulate their use. Even central banks started to consider issuing their digital versions of money.