# 📐 L2 Spec — Glaucoma Optic-Disc Cupping Classification (PWDR) — Spec Skeleton
**ID:** `L2-529-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-529`](/artifact/l1/L1-529)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.5 · **Delta tier:** 5
> **⛓ On-chain block:** 41553363
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 512 – 4096 |
| W | px | 512 – 4096 |
| Snr db | dB | [NEEDS_HAND_AUTHORING: bounds] |
| Image quality | — | [NEEDS_HAND_AUTHORING: bounds] |
| Rgb calibration | — | [NEEDS_HAND_AUTHORING: bounds] |
| Pallor mimicker | — | [NEEDS_HAND_AUTHORING: bounds] |
| Pixel resolution um | µm | [NEEDS_HAND_AUTHORING: bounds] |
| Tilted disc anatomy | — | [NEEDS_HAND_AUTHORING: bounds] |
| Field of view degrees | — | [NEEDS_HAND_AUTHORING: bounds] |
| Physiologic cupping variant | — | [NEEDS_HAND_AUTHORING: bounds] |
| Peripapillary atrophy overlap | — | [NEEDS_HAND_AUTHORING: bounds] |
| Manual grader 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
`945c3a21d78c39d38b1d9150300b38a6088614da2df2c4b767ece7a4bde927a1`
## 5. On-chain Registration
- **Chain hash:** `0x7aa4e9ade15c94806f04d7b8835f425db49ab93092eaffb9bde6aec5a980af49`
- **Chain tx hash:** `0x627a8de36a8eac0a4a91ee41408db550039689fdad761ac370eeb7d6e3a51bce`
- **Chain block:** `41553363`
---
## File Mapping
This bundle consists of: `L2-529-001.md`, `L2-529-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-529-001.md` | Source of truth — edit this | Human or LLM |
| `L2-529-001.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 `L2-529-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._