# 📐 L2 Spec — Atomic Force Microscopy (AFM) Mismatch-Only Spec
**ID:** `L2-162-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-162`](/artifact/l1/L1-162)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.55 · **Delta tier:** 5
> **⛓ On-chain block:** 41554246
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 128 |
| W | px | 128 |
| Snr db | dB | 0.0 – 40.0 |
| Pixel nm | nm | 0.1 – 100 |
| Tip wear | — | 0.0 – 0.5 |
| Thermal drift | — | 0.0 – 10 |
| Tip radius nm | nm | 1 – 100 |
| Tip convolution | — | 0.0 – 0.5 |
| Nonlinear response | — | 0.0 – 0.3 |
## 2. Tolerance (ε)
**Type:** `fn`
```
20.0 + 0.3 * SNR_dB - 10.0 * tip_convolution - 0.5 * thermal_drift - 8.0 * tip_wear
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.55 |
| Delta tier | 5 |
## 4. Fingerprint
`e65107f2b39f9b43617a5b000b01cb729b30549ea82da0950c7d3a93300b2d44`
## 5. On-chain Registration
- **Chain hash:** `0xeed3fe72b26285bdcf570959ada5043c172a968e93b724381f56a041ecc0a848`
- **Chain tx hash:** `0x09d54fc2a8219f13f84af441e6aa413379e9df998668841276ca966e55ed9498`
- **Chain block:** `41554246`
---
## File Mapping
This bundle consists of: `L2-162-001.md`, `L2-162-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-162-001.md` | Source of truth — edit this | Human or LLM |
| `L2-162-001.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 `L2-162-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._