# ☆  L3 Benchmark — T1_nominal

**ID:** `L3-420-001-001-T1` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Spec [`L2-420-001`](/artifact/l2/L2-420-001) · ⬆ Principle [`L1-420`](/artifact/l1/L1-420)

> **🏷 Type:** `fixed` · **Tier:** `T1` · **Quality:** `standard`
> **🎯 Threshold (ε):** `5.0`
> **📊 Baselines:** 2 reference solvers benchmarked
> **⛓ On-chain block:** 41555245

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## 🏷 1. Benchmark Profile

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

Standard Environmental Science conditions, clean data, calibrated model.

## 2. Operating Point (Ω-tier)

| Parameter | Unit | Value |
|---|---|---|
| Snow depth cm | — | 20 |
| N swath pixels | — | 10000 |
| Melt pond fraction | — | 0 |
| Ice concentration percent | — | 80 |
| Snow ice interface uncertainty | — | 0 |
| Multiyear ice misclassification | — | 0 |

## 3. Success Threshold (ε)

`ε = 5.0`

## 4. Baseline Solvers

| Name | Metric | Score | Q | SSIM | SAM° |
|---|---|---|---|---|---|
| NASA_team_passive_MW | sea_ice_concentration_RMSE_percent | 6.0 | 0.96 | — | — |
| Bootstrap_algorithm | sea_ice_concentration_RMSE_percent | 4.5 | 0.72 | — | — |

## 5. Registration Metadata

| Property | Value |
|---|---|
| D ibench | 0.15 |
| Rho | 1 |
| Principle id | L1-420 |
| Spec id | L2-420-001 |

**Benchmark hash:** `565f87818595c492c0aeed93f37b77c77198fd7839ae56f827cff9b668c9c907`

## 6. On-chain Registration

- **Chain hash:** `0x63415f3eb3d1c4eb0eb6ebbacb289f239fb35326f64850c880f90fe03314a8d1`
- **Chain tx hash:** `0x644eefb4bfbb4559aac858115674c125a156e41a94558709a6e420d580581fa9`
- **Chain block:** `41555245`

---

## File Mapping

This bundle consists of: `L3-420-001-001-T1.md`, `L3-420-001-001-T1.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L3-420-001-001-T1.md` | Source of truth — edit this | Human or LLM |
| `L3-420-001-001-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 `L3-420-001-001-T1`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._