Local ledger block chain for secure updates

A method comprising:

• receiving, by a controller of a memory device, a global block from a global ledger block chain to be added to a local ledger block chain for validating an update for non-user data stored in the memory device, wherein:
• the global block to be added to the local ledger block chain includes payload of data for the update of the non-user data stored in the memory device;
• a current local block in the local ledger block chain has a digital signature associated therewith that indicates the global block is from an authorized entity, wherein the digital signature includes a freshness field comprising a previous global block of the global ledger block chain that was previously added to the local ledger block chain;
• the freshness field is compared to the cryptographic hash of the current local block resident in the local ledger block chain to validate the update;
• and
• the cryptographic hash of the non-user data stored in the memory identifies the non-user data in the memory to be updated by the payload.

A system, comprising:

• a memory;
• and
• circuitry to generate a local ledger block chain for validating an update to non-user data stored in the memory to be updated, wherein the local ledger block chain is comprised of a global block from a global ledger block chain, wherein the global block includes a payload of data for the update of the non-user data stored in the memory;
• and
• a current local block of the local ledger block chain has a digital signature associated therewith that indicates the global block is from an authorized entity, wherein the digital signature includes a freshness field comprising a previous global block of the global ledger block chain that was previously added to the local ledger block chain;
• the freshness field is compared to a cryptographic hash of the current local block resident in the local ledger block chain to validate the update;
• and
• a cryptographic hash of the non-user data stored in the memory identifies the non-user data in the memory to be updated by the payload;
• and
• a host, wherein the host is configured to:
• receive the local ledger block chain from the memory;
• and
• validate the update to the non-user data stored in the memory using the received local ledger block chain.