R&D RECORD

Proof before posture.

The program is exercised against failure, migration, verification and adversarial conditions before broader readiness is claimed.

Receipt chain

Canonical bbs.receipt.v2 semantics, deterministic hashing, sequence/linkage checks and independent chain verification.

Implemented

Serialized append, chain-head allocation, advisory process locking, fsync durability and torn-tail handling.

Implemented

Ed25519 signing and public-key verification separated from the originating runtime.

Implemented

Receipt construction, signing and durable append under one chain-head lock and append unit.

Implemented; activation remains bounded

Declared ZIP payload universe, self-hashed manifests, optional detached signatures and embedded receipt verification.

Implemented; packet integration remains in progress

Non-destructive boundary records preserve exact legacy bytes and canonical-row digests without pretending old history was retroactively chained.

Implemented preparation path

Four independently receipted 250,000-case segments covering exactness, custody/failure truth, portability and independent verification.

Canonical 1,000,000-case target where technically meaningful; target is not a claim of completion

Authorized backend, API, configuration, tenant-isolation and AI-agent security validation with evidence and retest proof.

Scoped operation only

Bounded BLACKBOX investigation and deterministic receipt runtime used inside the controlled estate.

Private machinery; public claim is bounded investigation capability