Maersk uses it to fight corruption in container ownership claims. It used to be a piece of paper, that cost more than the actual container to transport because

Maersk uses it to fight corruption in container ownership claims. It used to be a piece of paper, that cost more than the actual container to transport because whoever held it could pick the container up at the port. These days it's run on block chain making it virtually impossible to claim a container that isn't yours. A similar use case could be used for almost any sort of ownership record in the public sector, like landownership.