“Blockchain” has dozens of definitions, it’s basically what people want it to be. That’s why you may read articles about “blockchain” solving almost any issue and transforming every single industry. It’s a logical fallacy as “blockchain” is used by many as a synonym of “software”, and it’s true that software is eating the world.
In reality, blockchains were designed to solve one specific problem: the double spending of digital cash without relying on a central third party. The only innovation of bitcoin in 2009 is that it gets rid of central authorities. All the other functionalities (append only database, linked lists, peer to peer networking, consensus protocols in distributed environments, merkle trees, public/private cryptographic keys, etc.) are 30 year old pieces of technology that can be used in traditional software in centralized environments.
So it’s obvious that all the use cases involving authorities such as voting, provenance and any case involving “somebody” certifying something do not need a blockchain. Same with any case involving real world assets or products, as a blockchain can only manage what’s natively stored in the system. To expand on those arguments and debunk fake blockchain use cases, you may use the following links:
Supply chain / Credentialing / Provenance
Supply chain is obviously not a blockchain use case (en Francais ici)
Other use cases (incl. land registry)