# 📐 L2 Spec — EEG Seizure Detection (PWDR) — Spec Skeleton
**ID:** `L2-531-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-531`](/artifact/l1/L1-531)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.5 · **Delta tier:** 5
> **⛓ On-chain block:** 41553391
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| Snr db | dB | [NEEDS_HAND_AUTHORING: bounds] |
| N channels | — | 4 – 256 |
| Muscle artifact | — | [NEEDS_HAND_AUTHORING: bounds] |
| Duration minutes | — | 10 – 10080 |
| Sampling rate hz | Hz | 128 – 5000 |
| Movement artifact | — | [NEEDS_HAND_AUTHORING: bounds] |
| Voltage resolution uv | — | [NEEDS_HAND_AUTHORING: bounds] |
| Drowsy state confounder | — | [NEEDS_HAND_AUTHORING: bounds] |
| Electrode impedance kohm | — | [NEEDS_HAND_AUTHORING: bounds] |
| Neonatal premature pattern | — | [NEEDS_HAND_AUTHORING: bounds] |
| Electrocardiac contamination | — | [NEEDS_HAND_AUTHORING: bounds] |
| Manual neurologist inter rater kappa | — | [NEEDS_HAND_AUTHORING: bounds] |
## 2. Tolerance (ε)
**Type:** `fn`
```
0.85_accuracy
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.5 |
| Delta tier | 5 |
## 4. Fingerprint
`e70ba76bea77f878e7a5e0d83d669ea2e7f29d5e9482e246600b036d0b8ea0fc`
## 5. On-chain Registration
- **Chain hash:** `0x6f50a5f9e6714a2d712d9fb2408a197cc4b1da7cb2c067420e728a29cf8f30b0`
- **Chain tx hash:** `0x7d5eeb6467d884020c9294ee92ba691a6dd0605690127ef436a9cc3592022029`
- **Chain block:** `41553391`
---
## File Mapping
This bundle consists of: `L2-531-001.md`, `L2-531-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-531-001.md` | Source of truth — edit this | Human or LLM |
| `L2-531-001.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 `L2-531-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._