# 📐 L2 Spec — Fluoroscopy (real-time X-ray) Mismatch-Only Spec
**ID:** `L2-035-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-035`](/artifact/l1/L1-035)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.5 · **Delta tier:** 5
> **⛓ On-chain block:** 41553374
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 256 |
| W | px | 256 |
| Fps | — | 10 – 60 |
| Kvp | — | 60 – 120 |
| Scatter | — | 0.0 – 0.4 |
| Pixel um | µm | 100 – 500 |
| Low dose noise | — | 0.0 – 0.3 |
| Frame rate limits | — | 0.0 – 0.5 |
| Dose rate ugy per s | s | 0.1 – 10 |
| Pincushion distortion | — | 0.0 – 0.1 |
## 2. Tolerance (ε)
**Type:** `fn`
```
18.0 + 2.0 * log10(dose_rate_uGy_per_s / 0.1) - 8.0 * scatter - 10.0 * low_dose_noise
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.5 |
| Delta tier | 5 |
## 4. Fingerprint
`d4e832749041e41ff91f74bbe8aa1cc69d0166e72bce1309a259a95aa63bad8f`
## 5. On-chain Registration
- **Chain hash:** `0x50c2c5335f70502d129c8716401c92b1ac45aa35bf573e62bf11943772a4121a`
- **Chain tx hash:** `0xda4f3ab416187335dddcfa637b07c4bdb4ac324881e5387ec7840b1eddcc8f87`
- **Chain block:** `41553374`
---
## File Mapping
This bundle consists of: `L2-035-001.md`, `L2-035-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-035-001.md` | Source of truth — edit this | Human or LLM |
| `L2-035-001.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 `L2-035-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._