# 📐  L2 Spec — Accretion Disk Structure Inversion — Nominal + Mismatch Specs

**ID:** `L2-375-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-375`](/artifact/l1/L1-375)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.38 · **Delta tier:** 5
> **⛓ On-chain block:** 41555181

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| Snr per bin | — | 5 – 100 |
| Spin a star | — | 0.0 – 0.998 |
| N counts total | — | 10000.0 – 100000000.0 |
| Inclination deg | deg | 5 – 80 |

## 2. Tolerance (ε)

**Type:** `fn`

```
1.0 + 0.1 * sqrt(20 / SNR_per_bin)
```

## 3. Difficulty

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

## 4. Fingerprint

`e918d8df012f71fb635868cca8825532deda8005ec08d7e3d305fe44813a70f8`

## 5. On-chain Registration

- **Chain hash:** `0x3beb0945c1e543d2093563284776894a98287d78149566aa0e31ec61e499bb18`
- **Chain tx hash:** `0x859c666cc89beb0085ac943ac9a8cd568728c605598ca8a07ecbfc5edcb2511c`
- **Chain block:** `41555181`

---

## File Mapping

This bundle consists of: `L2-375-001.md`, `L2-375-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-375-001.md` | Source of truth — edit this | Human or LLM |
| `L2-375-001.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 `L2-375-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._