Aspects very interesting to the enterprise world are consistent and predictable execution of code and the auditability of the append-only, cryptographically tamperproof database that a blockchain is.
It provides cryptographically secure text messaging and file transfers and can be used for things such as business dealings, and confidential communication between doctors and their patients.
Digital signatures cryptographically bind an electronic identity to an electronic document and the digital signature can not be copied to another document.
Due to the one-way property of cryptographically secure hash functions, it is infeasible for the eavesdropper to reverse the hash function and obtain an earlier piece of the hash chain.