Trusted systems for decentralized data storage

A method, comprising:

• detecting a request to write data to one or more data blocks of a plurality of data blocks in storage circuitry of a storage device;
• computing a hash over the data to be written to the one or more data blocks;
• generating an anonymous digital signature for the data to be written to the one or more data blocks based on a number of the one or more data blocks in which the data is to be stored, and based at least in part on a private signing key stored in a trusted circuit of the storage device and the computed hash;
• and
• outputting the anonymous digital signature to a blockchain to evidence completion of the request to write the data to the one or more data blocks in storage circuitry of the storage device and prevents identification of the storage device, wherein the generated anonymous digital signature prevents identification of the storage device and wherein the trusted circuit is interposed on a write path to the storage circuitry such that data written to the storage circuitry is processed through the trusted circuit.

A storage device, comprising:

• a storage circuitry configured to store a plurality of data blocks;
• and
• a trusted circuit having a private signing key securely stored thereon, the trusted circuit being configured to:
• compute a hash over data to be stored in one or more data blocks of the plurality of data blocks;
• and
• generate an anonymous digital signature for the data to be stored in the one or more data blocks based at least in part on the private signing key, the computed hash, and the one or more data blocks in which the data is to be stored;
• receive a first digital signature for first data to be stored in the storage circuitry and a second digital signature for second data to be stored in the storage circuitry;
• determine, based on information associated with the first digital signature and the second digital signature, that the first digital signature and the second digital signature are combinable, wherein in order to determine that the first digital signature and the second digital signature are combinable, the trusted circuit is configured to determine that a challenge value associated with the first digital signature and a challenge value associated with the second digital signature are a same challenge value;
• and
• based on a determination that the first digital signature and the second digital signature are combinable, generate a combined signature for the first digital signature and the second digital signature,
• wherein the generated anonymous digital signature evidences completion of a write operation of the data indicating that the data is stored in the one or more data blocks and prevents identification of the storage device, and
• wherein the trusted circuit is interposed on a write path to the storage circuitry such that data written to the storage circuitry is processed through the trusted circuit.