# 📐 L2 Spec — Kirchhoff Plate — thin-plate bending Mismatch-Only Spec
**ID:** `L2-210-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-210`](/artifact/l1/L1-210)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.48 · **Delta tier:** 5
> **⛓ On-chain block:** 41554013
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 16 – 1024 |
| W | px | 16 – 1024 |
| Snr db | dB | 0 – 40 |
| D error | — | 0.0 – 0.1 |
| Bc error | — | 0.0 – 0.2 |
| N sensors | — | 4 – 10000 |
| Load error | — | 0.0 – 0.1 |
## 2. Tolerance (ε)
**Type:** `fn`
```
20.5 + 0.3*SNR_dB - 30.0*D_error - 10.0*bc_error - 20.0*load_error
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.48 |
| Delta tier | 5 |
## 4. Fingerprint
`990a9aeffcd704fca924d58260196abbe0927749caa8ca014318e0adc3604b04`
## 5. On-chain Registration
- **Chain hash:** `0xf159ad2b1a02d6e85f8502940001244dfbef9a7bdd223434ce6daacd568b8d5f`
- **Chain tx hash:** `0x0208d92c40069cac3ba4fffc8f1dfb832c63a1f18aad2ae913c46920945d8b27`
- **Chain block:** `41554013`
---
## File Mapping
This bundle consists of: `L2-210-001.md`, `L2-210-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-210-001.md` | Source of truth — edit this | Human or LLM |
| `L2-210-001.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 `L2-210-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._