The blockchain works as an open database that cannot be changed. That is, data manipulation is excluded, which makes the blockchain super suitable for many structures in order to eliminate money losses associated with fakes and frauds. This is one way of using technology, but there are many more use cases.
we now use cryptos and cryptos uses a blockchain but did the frauds and fakes dissapeared ? no right ?
they are still there so id say that blockchain is not a solution to avoid them but i agree that by using a blockhain , our data's are now be safed and free from manipulation if the person is not authorized about those data's . this makes blockhain a good technology or a tool that can be use or will be useful in so many industries and fields .