# 📐  L2 Spec — Neutrino Oscillation Parameter Extraction — Nominal + Mismatch Specs

**ID:** `L2-485-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-485`](/artifact/l1/L1-485)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.42 · **Delta tier:** 5
> **⛓ On-chain block:** 41555319

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| Pot 1e21 | — | 0.1 – 30.0 |
| Baseline km | km | 200 – 2000 |
| N event bins | — | 10 – 1000 |
| Flux uncertainty percent | — | 1.0 – 20.0 |

## 2. Tolerance (ε)

**Type:** `fn`

```
10 + 10 * (5.0 / POT_1e21) ** 0.5
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.42 |
| Delta tier | 5 |

## 4. Fingerprint

`2936482e3a9659d535e88728feeb2a46c91d00bed46e2254d0b1a5cfb4266ad6`

## 5. On-chain Registration

- **Chain hash:** `0xc00e5d7a7cf368f3e20e8b489b89250e16313938a6408604813d3f7d6b95d432`
- **Chain tx hash:** `0x35c976624e1ebd6286e2de5cfa7c83fc7d225cc851d319d8eaad9800f1bbde44`
- **Chain block:** `41555319`

---

## File Mapping

This bundle consists of: `L2-485-001.md`, `L2-485-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-485-001.md` | Source of truth — edit this | Human or LLM |
| `L2-485-001.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 `L2-485-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._