US 11,811,914 B2
Blockchain-based digital rights management
Eric Diehl, Culver City, CA (US)
Assigned to Sony Group Corporation, Tokyo (JP); and Sony Pictures Entertainment Inc., Culver City, CA (US)
Filed by SONY GROUP CORPORATION, Tyokyo (JP); and SONY PICTURES ENTERTAINMENT INC., Culver City, CA (US)
Filed on Jan. 20, 2022, as Appl. No. 17/580,152.
Application 17/580,152 is a continuation of application No. 15/458,807, filed on Mar. 14, 2017, granted, now 11,258,587.
Claims priority of provisional application 62/410,557, filed on Oct. 20, 2016.
Prior Publication US 2022/0150053 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/10 (2013.01); H04L 9/14 (2006.01); H04L 9/08 (2006.01); H04L 9/30 (2006.01)
CPC H04L 9/0819 (2013.01) [G06F 21/10 (2013.01); H04L 9/0838 (2013.01); H04L 9/30 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for generating a rights blockchain storing rights of a user, the method comprising:
receiving, at a registration authority, an enrollment request and a public key of the user from the user;
verifying, at the registration authority, that the user has a private key corresponding to the public key of the user;
generating, at the registration authority, a user identifier using the public key of the user;
generating and delivering, at the registration authority, the rights blockchain having a genesis block including the user identifier to the user; and
updating, at the registration authority, the rights blockchain including a new block having a content identifier of a protected content, and associated usage rights,
wherein the protected content includes a scrambled essence,
wherein a signature and usage rights of a first block of the rights blockchain are determined to be valid when hashes of every block and a hash of the first block are consistent.