Method and system for content and service sharing

A system comprising:

• a blockchain server operative to receive an instruction at a network interface, the instruction being received from a first digital rights management (DRM) client, the instruction comprising an instruction to transfer a DRM license to an encrypted content item to a second DRM client,
• a blockchain, in which the block chain server is operative to create a block, the block comprising:
• a content item ID of said encrypted content item;
• one of a device ID of a device comprising the second DRM client or a user ID of a user of the second DRM client;
• DRM license information for said DRM license;
• and
• a DRM decryption key for decrypting said encrypted content item;
• wherein the blockchain server is operative to record the block in the blockchain;
• and the blockchain server is operative to send a confirmation message to the second DRM client confirming that the block was written to the blockchain.

A method comprising:

• receiving a confirmation message at a first DRM client from one of a plurality of blockchain servers when a block is recorded in a blockchain by one of said plurality of blockchain servers, said confirmation message confirming that a DRM license that was legitimately held by a second DRM client has been transferred to said first DRM client, wherein said DRM license comprises a license to an encrypted content item and a decryption key for decrypting the encrypted content item;
• decrypting the encrypted content item using the decryption key;
• and
• consuming the decrypted content item,
• wherein said block comprises:
• a content item ID of said encrypted content item;
• one of a device ID of a device comprising the first DRM client or a user ID of a user of the first DRM client;
• DRM license information for said DRM license;
• and
• said decryption key.