# 📐  L2 Spec — LiDAR Point Cloud 3D Mapping — Nominal + Mismatch Specs

**ID:** `L2-469-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-469`](/artifact/l1/L1-469)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.28 · **Delta tier:** 5
> **⛓ On-chain block:** 41555302

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| Imu drift deg hr | — | 0.001 – 0.1 |
| N points million | — | 0.1 – 1000 |
| Point density m2 | — | 1 – 100 |
| Flight altitude m | m | 100 – 5000 |

## 2. Tolerance (ε)

**Type:** `fn`

```
3.0 + 2.0 * (flight_altitude_m / 1000) ** 0.5
```

## 3. Difficulty

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

## 4. Fingerprint

`3b4c8733ac4cace93181ede95b859213bbf8a1b7052a8a28cea4b405ba3b0278`

## 5. On-chain Registration

- **Chain hash:** `0x2761678a56cff3c674c09902e7038c800165c5f22aeee6e1887cdb9149554f8b`
- **Chain tx hash:** `0x1ae2b0e98bb2b274652c26030bbcb4f733c9b2d0168fbd13f0a14b8625456005`
- **Chain block:** `41555302`

---

## File Mapping

This bundle consists of: `L2-469-001.md`, `L2-469-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-469-001.md` | Source of truth — edit this | Human or LLM |
| `L2-469-001.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 `L2-469-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._