# ☆  L3 Benchmark — T1_nominal

**ID:** `L3-258-001-001-T1` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Spec [`L2-258-001`](/artifact/l2/L2-258-001) · ⬆ Principle [`L1-258`](/artifact/l1/L1-258)

> **🏷 Type:** `fixed` · **Tier:** `T1` · **Quality:** `standard`
> **🎯 Threshold (ε):** `24.0`
> **📊 Baselines:** 3 reference solvers benchmarked
> **⛓ On-chain block:** 41554042

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## 🏷 1. Benchmark Profile

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

## 2. Operating Point (Ω-tier)

| Parameter | Unit | Value |
|---|---|---|
| H | px | 256 |
| W | px | 256 |
| Snr db | dB | 30 |
| K mean | — | 20 |
| N freqs | — | 16 |
| K error | — | 0 |
| N receivers | — | 32 |
| Geometry error | — | 0 |
| Impedance bc error | — | 0 |
| Receiver pos error | — | 0 |

## 3. Success Threshold (ε)

`ε = 24.0`

## 4. Baseline Solvers

| Name | Metric | Score | Q | SSIM | SAM° |
|---|---|---|---|---|---|
| Born-approximation | PSNR_dB | 21.0 | 0.88 | — | — |
| MoM-Helmholtz | PSNR_dB | 24.5 | 0.88 | — | — |
| Helmholtz-UNet | PSNR_dB | 26.5 | 0.88 | — | — |

## 5. Registration Metadata

| Property | Value |
|---|---|
| D ibench | 0.14 |
| Rho | 1 |
| Principle id | L1-258 |
| Spec id | L2-258-001 |

**Benchmark hash:** `0c51b0e574e796e47437c090ba36f4596ed1f1283766091bc7c8c0514e5eaf8e`

## 6. On-chain Registration

- **Chain hash:** `0x1e2d02bd34dc7495a6ee3202a64372415623c4e7fcdacb09ed6eaa1101bacdb7`
- **Chain tx hash:** `0x1e0d207c4db3be408342130f58a20689970dc6e35c0e4746788e481dc56f5857`
- **Chain block:** `41554042`

---

## File Mapping

This bundle consists of: `L3-258-001-001-T1.md`, `L3-258-001-001-T1.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L3-258-001-001-T1.md` | Source of truth — edit this | Human or LLM |
| `L3-258-001-001-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 `L3-258-001-001-T1`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._