# 📐  L2 Spec — CMB Power Spectrum Parameter Estimation — Nominal + Mismatch Specs

**ID:** `L2-366-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-366`](/artifact/l1/L1-366)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.4 · **Delta tier:** 5
> **⛓ On-chain block:** 41555179

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| L max | — | 100 – 5000 |
| N ell bins | — | 10 – 100 |
| Noise uk arcmin | — | 1.0 – 100.0 |
| Beam fwhm arcmin | — | 1.0 – 30.0 |

## 2. Tolerance (ε)

**Type:** `fn`

```
0.005 + 0.005 * (noise_uK_arcmin / 10.0) ** 0.5
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.4 |
| Delta tier | 5 |

## 4. Fingerprint

`bbbc6f52f4a1e2f8e3a7ccc39befede4345288397fbfb7c44503d7ace67a6c50`

## 5. On-chain Registration

- **Chain hash:** `0x52a670def86ee6e6389c9781db547f134b19bd362af191d1e0356e5e191f768c`
- **Chain tx hash:** `0x92474c216fe3c2571f91cb96af9f60c8986c80030011787f97c4ffcd3a23e1c2`
- **Chain block:** `41555179`

---

## File Mapping

This bundle consists of: `L2-366-001.md`, `L2-366-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-366-001.md` | Source of truth — edit this | Human or LLM |
| `L2-366-001.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 `L2-366-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._