# 📐 L2 Spec — 3DGS Novel-View Synthesis Mismatch-Only Spec
**ID:** `L2-083-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-083`](/artifact/l1/L1-083)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.42 · **Delta tier:** 5
> **⛓ On-chain block:** 41554186
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 400 – 4000 |
| W | px | 400 – 4000 |
| L sh | — | 0 – 4 |
| K views | — | 10 – 1000 |
| N gaussians | — | 100000 – 10000000 |
| Photon count | — | 100 – 10000 |
| Non lambertian | — | 0.0 – 0.5 |
| Pose error rad | rad | 0.0 – 0.1 |
| N budget too small | — | 0.0 – 0.8 |
| Motion blur per frame | — | 0.0 – 0.1 |
| Per frame exposure variation | — | 0.0 – 0.5 |
## 2. Tolerance (ε)
**Type:** `fn`
```
23.0 + 2.5 * log2(K_views / 10) + 2.0 * log10(N_gaussians / 100000) - 25.0 * pose_error_rad - 10.0 * N_budget_too_small
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.42 |
| Delta tier | 5 |
## 4. Fingerprint
`b91a8babea16afb1b2150a3cd6a511573f8eff81d2da194de0ddadaf39b706fd`
## 5. On-chain Registration
- **Chain hash:** `0x043f4e1dc34618dc3117c18c318b2fd0ea9188fcc6e955d3e4c0fbb7bf49359d`
- **Chain tx hash:** `0xb69fbd70089ccca695c3176d894aae7a373d4ee63f895504f638eb7161f6ca18`
- **Chain block:** `41554186`
---
## File Mapping
This bundle consists of: `L2-083-001.md`, `L2-083-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-083-001.md` | Source of truth — edit this | Human or LLM |
| `L2-083-001.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 `L2-083-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._