# 📐 L2 Spec — Crystal Plasticity — slip-system resolved plasticity Mismatch-Only Spec
**ID:** `L2-217-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-217`](/artifact/l1/L1-217)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.48 · **Delta tier:** 5
> **⛓ On-chain block:** 41554014
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| N dof | — | 1000 – 10000000 |
| Snr db | dB | 0 – 40 |
| N grains | — | 1 – 10000 |
| N slipsys | — | 3 – 48 |
| Tau 0 error | — | 0.0 – 0.1 |
| Texture error | — | 0.0 – 0.3 |
| H hardening error | — | 0.0 – 0.2 |
| Grain boundary error | — | 0.0 – 0.3 |
## 2. Tolerance (ε)
**Type:** `fn`
```
13.0 + 0.25*SNR_dB - 25.0*tau_0_error - 10.0*h_hardening_error - 5.0*texture_error - 5.0*grain_boundary_error
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.48 |
| Delta tier | 5 |
## 4. Fingerprint
`a4b0a919fc8d9bb516585118ddc0e6d5d9e95e08d8f0e7469ddfc04fbf3d5779`
## 5. On-chain Registration
- **Chain hash:** `0x3d4d06302668ef5d0587ad12b2d37263f3ef3f19f89b82d6670052bd33c82023`
- **Chain tx hash:** `0x256d36ee31e1a6093945c5a25e17b3a9890d2296c246fd8959dee94b44ed9ef1`
- **Chain block:** `41554014`
---
## File Mapping
This bundle consists of: `L2-217-001.md`, `L2-217-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-217-001.md` | Source of truth — edit this | Human or LLM |
| `L2-217-001.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 `L2-217-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._