Cryptocurrency works like a secure cloud-based filing system. Every block contains a reference to the block immediately preceding it. These references link blocks together and are impossible to fake. In order to obtain access to any coin or token, a hacker must replicate the chain of blocks that followed it. Without a traceable history, the blockchain would be useless. This is why crypto is so popular with investors. Its decentralized nature prevents interactions with government agencies or third-party servers.
