# 📐  L2 Spec — Cryo-Electron Tomography (cryoET) — in-situ 3D biology at nm scale Mismatch-Only Spec

**ID:** `L2-092-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-092`](/artifact/l1/L1-092)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.48 · **Delta tier:** 5
> **⛓ On-chain block:** 41554188

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| H | px | 1024 – 8192 |
| W | px | 1024 – 8192 |
| Z | — | 64 – 1024 |
| Kv | — | 300 – 300 |
| N tilts | — | 20 – 200 |
| Beam damage | — | 0.0 – 0.8 |
| Total dose e | — | 20 – 200 |
| Missing wedge | — | 0.1 – 0.5 |
| Dose weighting | — | 0.0 – 1.0 |
| Tilt range deg | deg | 40 – 80 |
| Tilt angle error | — | 0.0 – 0.3 |

## 2. Tolerance (ε)

**Type:** `fn`

```
14.0 + 3.0 * log2(N_tilts / 20) + 2.0 * log10(total_dose_e / 20) - 15.0 * missing_wedge - 5.0 * beam_damage
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.48 |
| Delta tier | 5 |

## 4. Fingerprint

`d8dff87a020d4cb1e78ee471a55bceef2e8f23b9a74160431e997514b08328f4`

## 5. On-chain Registration

- **Chain hash:** `0x13b9c103ba44bfeba127ac59e9fa8d823187fc3a7180f22f3a3b014261e0bfaa`
- **Chain tx hash:** `0x0e1d314235bd2886bd4f7d0e621ce37db97345927ca4f6de1a2d24a664afc265`
- **Chain block:** `41554188`

---

## File Mapping

This bundle consists of: `L2-092-001.md`, `L2-092-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-092-001.md` | Source of truth — edit this | Human or LLM |
| `L2-092-001.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 `L2-092-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._