Digital permanence has become a prevalent issue in society. This article focuses on the forces behind it and some of the techniques to achieve a desired state in which "what you read is what was written." While techniques that can be imposed as layers above basic data stores—blockchains, for example—are valid approaches to achieving a system's information assurance guarantees, this article will not discuss them.
First, let's define digital permanence and the more basic concept of data integrity.
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