# 📐 L2 Spec — Event Camera Intensity Reconstruction Mismatch-Only Spec
**ID:** `L2-078-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-078`](/artifact/l1/L1-078)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.72 · **Delta tier:** 5
> **⛓ On-chain block:** 41554174
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 240 – 1280 |
| W | px | 180 – 960 |
| Hot pixels | — | 0 – 100 |
| N events per sec | — | 10000 – 100000000 |
| Noise event rate | — | 0.0 – 100000 |
| Contrast threshold c | — | 0.05 – 0.5 |
| Reconstruction rate hz | Hz | 15 – 240 |
| Refractory period drift | — | 0.0 – 1000 |
| Contrast threshold variance | — | 0.0 – 0.1 |
## 2. Tolerance (ε)
**Type:** `fn`
```
14.0 + 2.5 * log10(N_events_per_sec / 10000) - 15.0 * contrast_threshold_variance - 4.0 * log10(noise_event_rate + 1)
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.72 |
| Delta tier | 5 |
## 4. Fingerprint
`d3f9d13a2e69a70c9fbe852db31bb58653bdd2182a4d8da54b7c4e855c28ce29`
## 5. On-chain Registration
- **Chain hash:** `0x322751d5124aa1cb22245d9224452d4aecbf41a58c7b856ecbf075f61dac0a3d`
- **Chain tx hash:** `0xc86653131b5e6b81efb0fb7b5fc778d964c45d5c31bfe965abdc61ed1ea6fb3e`
- **Chain block:** `41554174`
---
## File Mapping
This bundle consists of: `L2-078-001.md`, `L2-078-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-078-001.md` | Source of truth — edit this | Human or LLM |
| `L2-078-001.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 `L2-078-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._