Patent ID: 11868509
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A computing device for creating a tamper-evident digital content, the computing device comprising:
one or more processing circuits;
at least one communication interface for communicating with a distributed ledger system and a storage device;
an encoding unit configured to perform a method that includes:
receiving a portion of the digital content at a computing device;
after receiving the portion of the digital content, the computing device encrypting the portion of the digital content by the computing device;
after encrypting the portion of the digital content, the computing device sending the encrypted portion of the digital content to a distributed ledger system comprising a block chain database in which a program is stored, wherein the program stored in the block chain database is configured to obtain the encrypted portion of the digital content, generate a hash value using the encrypted portion of the digital content, store the hash value in the block chain database, and provide hash identification data for use in retrieving the hash value from the block chain database, wherein the hash identification data comprises: a block chain identifier identifying the block chain database and a network address of a node hosting the block chain database;
the computing device receiving from the distributed ledger system the hash identification data comprising the block chain identifier and the network address; and
creating an updated portion of the digital content using the retrieved hash identification data, wherein
the computing device is separate from the distributed ledger system,
creating the updated portion of the digital content further comprises embedding the retrieved hash identification data with metadata associated with the portion of the digital content, and
the metadata associated with the portion of the digital content includes a parameter identifying a technique that was used to select the portion of the digital content for proof-of-verification.