If we talk about the reliability of blockchain, then we find that there are some points that prove its success. like - This is easily compatible with other business applications due to its open-source nature. That is safe, hacking proof, and encrypted. Here is no central authority to control it. Each member(participant) agreed to how a transaction inserted into the blockchain. And the transaction is immutable means once the transaction inserted into the blockchain, we cannot change it.
If we talk about the reliability of blockchain, then we find that there are some points that prove its success. like -