Ephemeral Virtualized Execution and Memory Confinement Platform for CPU/GPU Data Zeroization and Immutable Proof-of-Erasure

A method of enforcing ephemeral data usage, comprising:

• a. allocating at least one region of system memory and designating said region to prevent swapping or persistent storage. If an OS forcibly pages data it must be encrypted;
• b. creating an ephemeral environment having a unique cryptographic context and a set of memory pages within the ephemeral region;
• c. intercepting device memory operations to allocate ephemeral GPU or accelerator buffers under said ephemeral environment;
• d. receiving a request to deallocate at least one page or device buffer belonging to the ephemeral environment;
• e. marking said page or buffer as pending zeroization and overwriting its contents with an irretrievable pattern;
• f. computing a cryptographic hash of the overwritten contents and comparing it to a reference hash;
• and
• g. recording a verified zeroization event in an immutable ledger.

A secure ephemeral environment, comprising:

• a. a plurality of ephemeral execution contexts, each context having a unique identifier and isolated memory pages pinned in RAM or accelerator memory;
• b. concurrency locks at global, context, and per-page granularity to facilitate multi-threaded data access while preventing cross-environment data leakage;
• c. cryptographic zeroization routines enforced at the page or buffer level, wherein each page or buffer is overwritten with an irretrievable pattern and verified before being reallocated;
• and
• d. a blockchain-based erasure logging mechanism that publishes zeroization proof records for each ephemeral execution context upon teardown.