# 📐 L2 Spec — Laser Heating — short-pulse temperature rise inversion Mismatch-Only Spec
**ID:** `L2-205-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-205`](/artifact/l1/L1-205)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.48 · **Delta tier:** 5
> **⛓ On-chain block:** 41554038
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 32 – 1024 |
| W | px | 32 – 1024 |
| Z | — | 8 – 256 |
| Snr db | dB | 0 – 40 |
| Fs ghz | GHz | 0.001 – 1000 |
| K error | — | 0.0 – 0.1 |
| Cv error | — | 0.0 – 0.1 |
| N samples | — | 20 – 10000 |
| Pulse width error | — | 0.0 – 0.3 |
| Absorption coeff error | — | 0.0 – 0.2 |
## 2. Tolerance (ε)
**Type:** `fn`
```
16.0 + 0.3*SNR_dB - 15.0*absorption_coeff_error - 10.0*pulse_width_error - 25.0*k_error
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.48 |
| Delta tier | 5 |
## 4. Fingerprint
`0275d69f26d10fbf714ad3fdabea73cd229d5b60b5ca5dad3cc6ab76ad8bd00b`
## 5. On-chain Registration
- **Chain hash:** `0x65037595af4e3691229eaa79f8906f955ed4210f2e1e3f8deee4054c21a2fe3b`
- **Chain tx hash:** `0x60d38c59281ea013177c77308c7b2d8e559315d751bd1639db9c9b8663e3eb6d`
- **Chain block:** `41554038`
---
## File Mapping
This bundle consists of: `L2-205-001.md`, `L2-205-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-205-001.md` | Source of truth — edit this | Human or LLM |
| `L2-205-001.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 `L2-205-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._