[...] * Regarding deepfakes, another possibility is to make use of blockchain technologies, in which every record is replicated on multiple computers and tied to a pair of public and private encryption keys. In this way, the person/institution holding the private key will be the true owner of the data, not the computers storing it. Furthermore, blockchains are rarely affected by security threats, which in turn can attack centralized data stores. As an example, individuals could make of the blockchain to digitally sign and confirm the authenticity of a video or audio file. The more the digital signature, the more is the likelihood that a document is authentic.