SOURCE_DIGEST: ce65ce6d2247f95ac26d7606c8ab0122a5e957e10e6e3c7a1c82c61ecf2d5538

**Verification of Round-1 Corrections:**

1. **Deterministic versioned circuit serialization:** 
   Verified in Section 14.4 (I3: owning Rust abstraction). The manuscript now explicitly defines the serialization requirements ("domain-separated node tags; canonical scalar and coefficient bytes; ordered children for noncommutative constructors; lexicographically sorted child digests with retained multiplicities for commutative constructors; and a domain-separated root digest"). It correctly notes that decoders reject duplicate encodings and clarifies that byte identity across Rust and Haskell via golden fixtures does not bypass the need for separate semantic denotation tests.

2. **Source-token granularity subsumption:** 
   Verified in Section 3.1 (Definition: Granularity subsumption). The manuscript now requires a "total deterministic parent projection" where the fine region is contained in exactly one coarse region. It explicitly maps missing coverage to `Partial` and missing or ambiguous parentage to `Unknown`, strictly forbidding the silent refinement of coarse evidence into finer evidence.

3. **Required PROV export `loss_report`:** 
   Verified in Section 9.1 (Operations). The `export_prov` operation signature now returns `loss_report`. The text mandates this field as strictly required rather than optional, explicitly stating that "an export without that field is invalid even if its PROV document satisfies the external syntax and constraints."

**Re-audit of Boundaries and Nonclaims:**

- **Truth/Authority Boundaries:** Section 11 separates provenance from truth perfectly, asserting that precise traces of false sources remain precise, and that hash chains do not prove capture completeness or source honesty.
- **Positive-Fragment Algebra Exclusions:** Section 4.1 clearly excludes difference, negation, aggregation, outer joins, nulls, and opaque external calls from the supported positive bag-relational fragment.
- **Completeness Classes:** Section 7 defines `ExactForProfile`, `Partial`, `Opaque`, `Redacted`, and `Unknown` with strong monotonicity requirements (honest weakening, no unverified strengthening).
- **W3C Interoperability Loss:** Section 10 successfully separates W3C PROV syntax from the internal semiring derivation, explicitly enumerating the structural, coefficient, and exactness losses that necessitate the `loss_report`.
- **Privacy/Retention:** Section 11 successfully scopes policy to provenance metadata (graph shape, counts, timing) rather than just data rows, and prohibits returning empty exact graphs for redacted evidence. 
- **Evaluation:** Section 13 outlines a rigorous run contract, separating the independent oracle from backend conformance, and demands preregistered thresholds.
- **Exact Nonclaims & Dependencies:** Section 16 enumerates 20 exact nonclaims, strictly limiting the paper's scope. All `OPEN` (e.g., Rust runtime, Lean theorems, benchmark runs) and `OBSTRUCTED` (e.g., upstream query and mapping semantics) statuses are preserved and correctly labeled.

**Findings:**
No remaining actionable major or minor findings. The profile-relative contract is strict, the systems obligations are explicit, and the round-1 corrections were integrated precisely as requested.

VERDICT: ACCEPT