Two-pass hardening of the #690 demo so no epistemic state is proposer-mintable:
Pass 1 (sealed corpus, from the reconciliation pass):
- evidence items are references only (evidence_id + content_sha256) resolved
against a committed content-addressed corpus (evidence_corpus.json)
- support derived from committed subject/predicate match; independence from
distinct provenance_root values; proposer support/independence labels are
rejected by the closed schema
- evidence-strength taxonomy (substrate-capability vs interface-contract) in
PUBLIC-DEMO-ROADMAP / DEMO-PACKAGING-CHECKLIST; position-paper refinements
Pass 2 (entailment-decided inference, closes a live false-status hazard):
- the merged inferred leg required only that premise IDs resolve — a claim
with no support citing one unrelated record as a premise was assigned
'inferred' (empirically confirmed). inferred is now decided by
generate.proof_chain.entail (sound+complete ROBDD) over resolved corpus
premises, cross-checked against the independent truth-table oracle
(evals.deductive_logic.oracle, no shared code); proof keys + oracle verdict
in the trace; disagreement => defensive refusal; refutation => contradicted
- committed adversarial scenario unrelated-premise-still-undetermined proves
the attack now lands on undetermined
- corpus seal (corpus_sha256) pinned into every evaluated trace; scope
refusals no longer consult the corpus; corpus cache hands out copies;
claim subject/predicate constrained to atom-compatible snake_case
- .gitignore: private packet dir, agent worktrees, tooling artifacts
Validation: 30 demo tests; 96 across all three demo suites; 7/7 scenarios
double-run byte-identical; 61 architectural invariants green.
a69de813cb