In numerous popular videos and texts explaining how cryptocurrencies work, this explanation is usually given using the example of Bitcoin, the first of the cryptocurrencies. Bitcoin is actually a clean and understandable implementation of the principles necessary for a cryptocurrency: openness of the transaction history, the ability to verify the source of money along the chain, clear rules for the appearance of money, clear rules for creating new transactions. New coins appear only as a result of mining new blocks, and the mining reward gradually decreases according to the logarithmic law, as a result of which the total amount of issued bitcoins will never exceed the limit (21 million). Any waste of money (transaction input) must match the output of another transaction, money cannot come from anywhere. To spend, you need to sign the transaction with a private key.A simple scripting language allows you to do multisig and all sorts of other useful things, including creating new currencies (tokens) based on the bitcoin blockchain (omni layer, that's how USDT lives). There is no central node, the new block is determined by the consensus of all nodes - if there are several options, they accept the branch in which the maximum number of calculations was done, this is a formal criterion that does not allow for discrepancies. Any user can run its own node, the source code is open.not subject to confusion. Any user can run its own node, the source code is open.not subject to confusion. Any user can run its own node, the source code is open.
Unfortunately, the concept of cryptocurrencies, despite its elegance, did not find understanding among the bulk of users. The "average user" does not care whether his money is in a distributed blockchain or on a particular site. For him, it's all the same "somewhere on the net." When the money on the site is even calmer, because it is clear who is responsible for it, in which case you can argue or write on the social network about what scoundrels they are, or even sue, and if the money is "lost" in the blockchain, then there is no one to complain to. Users who buy bitcoins do not store private keys on their own, but mostly delegate it to third-party sites, so there really is no difference for them. And even if they keep it, they first generate this key somewhere, and then download it. It is clear that this is no longer completely their key.As a result, there are rumors about "Bitcoin hacking", when money goes to hackers, and similar stories. On the other hand, smart and authoritative people explain that the blockchain and the cryptocurrencies built on it are reliable and correct, and there is no reason not to believe them.
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