# 📐  L2 Spec — Satellite Radar Altimetry — Nominal + Mismatch Specs

**ID:** `L2-468-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-468`](/artifact/l1/L1-468)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.28 · **Delta tier:** 5
> **⛓ On-chain block:** 41555301

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| Swh m | m | 0.0 – 10.0 |
| N gates | — | 64 – 512 |
| Mispointing deg | deg | 0.0 – 1.0 |
| Noise sigma percent | — | 1.0 – 20.0 |

## 2. Tolerance (ε)

**Type:** `fn`

```
2.0 + 1.0 * (SWH_m / 2.0) ** 0.3
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.28 |
| Delta tier | 5 |

## 4. Fingerprint

`e1e2b82b8209a652a799c465943d9ea9a39bc07b2cba29fe5c209cdfce28ac2e`

## 5. On-chain Registration

- **Chain hash:** `0x29fd6c961409e2d9b67d9ad728c497d0042f4130433ec3d5e4149fb7f75add80`
- **Chain tx hash:** `0x114e3c2cd0bec2fb30a82d47cbbc01a9601dab8ee6b8d3d9a855dfba3513369e`
- **Chain block:** `41555301`

---

## File Mapping

This bundle consists of: `L2-468-001.md`, `L2-468-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-468-001.md` | Source of truth — edit this | Human or LLM |
| `L2-468-001.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 `L2-468-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._