# R12 Post-Commit Interface Falsifier Result

**Decision:** PASS as an exact evaluator validation. This is not a learned
result and is not evidence that Shohin reasons.

## 1. Frozen object

The preregistered CPU harness enumerated every source in `F_17^4` and committed
two four-field-element packets before generating the challenge interface:

```text
state packet = (x_0, x_1, x_2, x_3)
motor packet = (x_0, x_1, 0, 0)
```

The result is immutable mode `0444` at
`artifacts/r12/post_commit_interface_falsifier_v1.json`.

```text
result bytes:          14,453
result SHA-256:        b7309987cb644bdf31273a07193df56226e35d3653257e239632d7bd837415b4
payload SHA-256:       4a76de6ef7aa4a6441f24973f13dd8ed3b36c059c3514b6bb7a842b659284e61
code SHA-256:          b7d04f16633ff6e189f60d47b5f45c8595cb91832f6c857b1de74488e88aa271
challenge SHA-256:     450726814777742949799353e2be0dea954d953df9fce68aede9370c9ffa5f58
frozen prereg SHA-256: 6c5d7e650c05b3f09c93015be17edbefe7684927f0089ad6784409001539e3d2
```

Phase-one packet custody is independently bound by:

```text
state packets SHA-256: 256204ac19f9e8fe55cfb177eee21e194b94adc4b34942b1cfd0cf039d977869
motor packets SHA-256: 614974dc9ddbd621c2827324b48f0b6710aa0946249832ae7aa0e40f08de6eb8
paired packets SHA-256:c8d541474d8da49243cdffcad2371309c43f1e9c782b6b6078b3a298d23ef532
```

## 2. Exact scores

| Cell family | Cells | State packet | Motor packet |
|---|---:|---:|---:|
| Public controls | 5 | 83,521 / 83,521 each | 83,521 / 83,521 each |
| Decisive post-commit | 15 | 83,521 / 83,521 each | 4,913 / 83,521 each |
| Decisive after output recoding | 15 | 83,521 / 83,521 each | 4,913 / 83,521 each |

`4,913 / 83,521 = 1/17` exactly. Every decisive cell includes two
source states with the same motor packet but different correct outputs.

All frozen gates passed: equal packet width, source-free schema, public
controls, decisive separation, fresh output recoding, collision witnesses,
source-pointer rejection, depth-8 pass/depth-9 rejection, deterministic
generation, and challenge-seed independence of phase-one packet hashes.

The strengthened test command completed 11 tests in 122.868 seconds. The
horizon control is an executed source-free reader over all 15 decisive cells,
not a declared pass flag: it is exact through depth 8 and 0/83,521 at depth 9.

```text
python3 -m unittest pipeline.test_post_commit_interface_falsifier -v
Ran 11 tests in 122.868s
OK
```

## 3. Supported conclusion

The scorer correctly separates a complete reusable state packet from the
declared equal-width public-answer motor packet when update, consumer, and
output recoding are generated only after packet commitment. The public cells
show that the motor arm is favorable rather than broken by construction.

This validates only the static algebraic scorer. It does not yet validate the
experimental transport interface needed for a learned test: v1 composes the
future update sequence into one effective functional and reads the initial
packet, rather than invoking a source-free packet updater after each event. It
also regenerates sources inside one scoring process, and scorer-side bijective
recoding is equivalent to raw correctness. It therefore does not show that a
neural network can learn or update the state packet, exclude an unlimited
finite table, prove a unique internal ontology, improve Shohin, or establish
reasoning.

## 4. Next authorization boundary

Independent adversarial review is **NO-GO for a CPU neural preregistration from
v1**. `R12_PCFT_ADVERSARIAL_AUDIT.md` freezes the defects and surviving theorem.
The next authorized object is a process-separated exact transport falsifier:
writer, stateless one-event updater, oracle, and fresh reader must communicate
only through serialized packets and role-specific interfaces; the reader must
consume a late codebook and emit the recoded symbol itself.

Only a v2 process/custody pass may authorize a separately committed neural
preregistration with an exact resource ledger and same-information controls.
No neural, Shohin, or H100 fit is authorized by this result.