# ⚡ L4 Solution — baseline:reference
**ID:** `L3-509-001-001-T1-reference-topup` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Benchmark [`L3-509-001-001-T1`](/artifact/l3/L3-509-001-001-T1)
> **🛠 Solver:** `baseline:reference`
> **📊 Performance:** **Q = `0.8`** · difficulty `0.15`
> **🔖 Status:** `testnet`
---
## 1. Solver
**`baseline:reference`**
## 2. Performance
| Property | Value |
|---|---|
| Difficulty score | 0.15 |
| Quality ratio | 0.8 |
| Reward pwm | 0 |
## 3. Operating Point (Ω_s)
| Parameter | Unit | Value |
|---|---|---|
| H | px | 256 |
| W | px | 256 |
| Z | — | 64 |
| Snr pa db | dB | 22 |
| Snr us db | dB | 28 |
| N us modes | — | 2 |
| Voxel size mm | mm | 0.2 |
| Lambda range nm | nm | 700 – 1064 |
| N pa wavelengths | — | 5 |
| Us bandwidth mhz | MHz | 5 |
| Speed of sound mps | — | 1500 |
| Acoustic attenuation | — | 0 |
| Fluence inhomogeneity | — | 0 |
| Us center frequency mhz | MHz | 7.5 |
| Motion during acquisition | — | 0 |
| Acoustic speed heterogeneity | — | 0 |
| Pa us synchronization jitter | — | 0 |
| Transducer bandwidth difference pa vs us | µs | 0 |
## 4. Certificate
**Hash:** `5d755d25b135f18549eac12cac04a694d77882d5887f8fb9f44de48617f6dfdf`
**Status:** `testnet`
## 5. Code
Reference implementation — see [`code/`](/artifact/l4/L3-509-001-001-T1-reference-topup/raw/code/) when present.
## 6. Reproduction Report
Reconstruction results on the parent benchmark — see [`reports/`](/artifact/l4/L3-509-001-001-T1-reference-topup/raw/reports/) when present.
---
## File Mapping
This bundle consists of: `L3-509-001-001-T1-reference-topup.md`, `L3-509-001-001-T1-reference-topup.json`, `code/`, `reports/`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L3-509-001-001-T1-reference-topup.md` | Source of truth — edit this | Human or LLM |
| `L3-509-001-001-T1-reference-topup.json` | Structured metadata for the registry | LLM regenerates from the sections above |
| `code/solver.*` | Reference implementation | LLM regenerates from §1 Solver and §2 Operating point |
| `reports/results.md` | Reconstruction results | **Generated by running the solver** — do not fabricate |
| `reports/reproduce.md` | Step-by-step verification recipe | LLM regenerates as a recipe matching what was actually run |
**Prompt for your LLM after editing this Markdown:**
> Read the attached Markdown. Regenerate the sibling `.json` so every field matches.
> Also regenerate `code/solver.*` and `reports/reproduce.md` per the schema.
> Output each file in its own fenced code block tagged with the filename.
> Do NOT fabricate `reports/results.md` — it must come from actually running the solver.
_This Markdown was auto-synthesized from the catalog row for `L3-509-001-001-T1-reference-topup`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._