# 📐  L2 Spec — Stellar Atmosphere Spectral Inversion — Nominal + Mismatch Specs

**ID:** `L2-371-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-371`](/artifact/l1/L1-371)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.38 · **Delta tier:** 5
> **⛓ On-chain block:** 41555180

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| Snr | — | 10 – 500 |
| T eff k | — | 3500 – 7500 |
| N lambda | — | 1000 – 50000 |
| Log g cgs | — | 1.0 – 5.0 |

## 2. Tolerance (ε)

**Type:** `fn`

```
1.0 + 0.15 * (100 / SNR) ** 0.5
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.38 |
| Delta tier | 5 |

## 4. Fingerprint

`1b4b249145de6e543961e5f93f4afcfc9ddf0ba63da694b76cbd24e7998052fc`

## 5. On-chain Registration

- **Chain hash:** `0xb08ecc3c62c5e69d9d77541ba4caaff4c96ab09101261afd7741153d5e5e6417`
- **Chain tx hash:** `0xe83822a8a4037aa8f65c099348d9343456b8ea6d81943dad84e20e56200a8f22`
- **Chain block:** `41555180`

---

## File Mapping

This bundle consists of: `L2-371-001.md`, `L2-371-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-371-001.md` | Source of truth — edit this | Human or LLM |
| `L2-371-001.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 `L2-371-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._