# 📐  L2 Spec — Ab Initio Molecular Dynamics (Car-Parrinello / BOMD) Mismatch-Only Spec

**ID:** `L2-298-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-298`](/artifact/l1/L1-298)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.45 · **Delta tier:** 5
> **⛓ On-chain block:** 41554116

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| Xc | — | LDA, PBE, B3LYP |
| T k | — | 4 – 5000 |
| Dt fs | — | 0.01 – 5 |
| N atoms | — | 8 – 10000 |
| N steps | — | 1000 – 10000000.0 |

## 2. Tolerance (ε)

**Type:** `fn`

```
0.05 * (1 + 0.1 * mismatch_severity)
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.45 |
| Delta tier | 5 |

## 4. Fingerprint

`61a88caab97a252bc12ae1e929508e6f5c4c9797ec8b0b6b428afef51410699a`

## 5. On-chain Registration

- **Chain hash:** `0xece970c70a8e0d40da4355f2ab4b9b0f9aad7d31b474a7379ffec5ef04548cf2`
- **Chain tx hash:** `0x0f234d701480aad7e60e327d93d6b16b3b6265e41f3d4ef5c4f3f1f2357e44df`
- **Chain block:** `41554116`

---

## File Mapping

This bundle consists of: `L2-298-001.md`, `L2-298-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-298-001.md` | Source of truth — edit this | Human or LLM |
| `L2-298-001.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 `L2-298-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._