# ☆  L3 Benchmark — T1_nominal

**ID:** `L3-271-001-001-T1` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Spec [`L2-271-001`](/artifact/l2/L2-271-001) · ⬆ Principle [`L1-271`](/artifact/l1/L1-271)

> **🏷 Type:** `fixed` · **Tier:** `T1` · **Quality:** `standard`
> **🎯 Threshold (ε):** `3.0`
> **📊 Baselines:** 3 reference solvers benchmarked
> **⛓ On-chain block:** 41554056

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## 🏷 1. Benchmark Profile

**Type:** `fixed` · **Tier:** `T1` · **Quality:** `standard`

## 2. Operating Point (Ω-tier)

| Parameter | Unit | Value |
|---|---|---|
| Snr db | dB | 20 |
| Freq hz | Hz | 500 |
| R max m | m | 1000 |
| N stations | — | 16 |
| Terrain error | — | 0 |
| Temp profile error | — | 0 |
| Wind profile error | — | 0 |
| Ground impedance error | — | 0 |

## 3. Success Threshold (ε)

`ε = 3.0`

## 4. Baseline Solvers

| Name | Metric | Score | Q | SSIM | SAM° |
|---|---|---|---|---|---|
| ISO-9613 | SPL_error_dB | 4.0 | 0.88 | — | — |
| PE-outdoor | SPL_error_dB | 2.8 | 0.88 | — | — |
| Nord2000 | SPL_error_dB | 3.2 | 0.88 | — | — |

## 5. Registration Metadata

| Property | Value |
|---|---|
| D ibench | 0.14 |
| Rho | 1 |
| Principle id | L1-271 |
| Spec id | L2-271-001 |

**Benchmark hash:** `b79e5b4ffecb044435a00d61e24049ea8cfdff1b0eb3bec92a0922203613f9a5`

## 6. On-chain Registration

- **Chain hash:** `0xea3d6f84730cc29138d4e005129086b6bad420eb410849b519439f557c238b9c`
- **Chain tx hash:** `0xdd18f6e331cf56175191d50d244aa17707d50b4930c9c731bee184575650f8a6`
- **Chain block:** `41554056`

---

## File Mapping

This bundle consists of: `L3-271-001-001-T1.md`, `L3-271-001-001-T1.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L3-271-001-001-T1.md` | Source of truth — edit this | Human or LLM |
| `L3-271-001-001-T1.json` | Structured metadata for the registry | LLM regenerates from the sections above |

**Prompt for your LLM after editing this Markdown:**

> Read the attached Markdown. Regenerate the sibling `.json` so every field matches.
> Preserve the schema documented in the rows above.
> Output each file in its own fenced code block tagged with the filename.
> Output only the JSON object.

_This Markdown was auto-synthesized from the catalog row for `L3-271-001-001-T1`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._