GATE B
Certificate architecture
What changed
Recursive proof-trace certificate plus an independent verifier, it rejects false prunes, fabricated survivors and phantom duplicates, not just checksum tampering.
Evidence
check 18 of 8 corruption fixtures rejected, including hash-consistent maths attacks
check 2Regression: certificate survivors equal the truth model, 0 mismatch
check 3Verifier structurally independent from producer
Verification: double · I2 · 24 artifacts (reports, verifiers, corruption suites, manifest with SHA-256)