Been asked a couple of times, what problems does cryptocurrency solve, and what’s its unique value proposition compared to other cryptocurrencies or traditional financial systems. Would love any other users take on this ..
Bitcoin solved the problem of cashless transaction without the fear of banks having issue or reverse transaction. Before Bitcoin was invented we held other digital currency but they weren't decentralized which means there was no trust in the digital currency for your transaction not to be reversed. PayPal was one of them and when transaction were been reported, you can get your money reversed and this was an issue for marchants but with Bitcoin invention that trust issue was resolved.
As for the other cryptocurency claiming to be solving one world problem or the other, they're all lies and just technique used to hype their project so they can get investors who are looking for quick money to invest into the project and make them money as they sell their own tokens.