# 📐  L2 Spec — CT-FLIT (Fluorescence Lifetime Imaging Tomography) Mismatch-Only Spec

**ID:** `L2-160-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-160`](/artifact/l1/L1-160)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.55 · **Delta tier:** 5
> **⛓ On-chain block:** 41554245

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| H | px | 32 |
| W | px | 32 |
| Z | — | 16 – 256 |
| Snr db | dB | 0.0 – 35.0 |
| N sources | — | 4 – 64 |
| N detectors | — | 4 – 128 |
| Ct prior mismatch | — | 0.0 – 0.5 |
| Registration error | — | 0.0 – 5.0 |
| Fluorophore leakage | — | 0.0 – 0.3 |
| Tissue scattering model | — | 0.0 – 0.5 |

## 2. Tolerance (ε)

**Type:** `fn`

```
8.0 + 0.3 * SNR_dB - 8.0 * tissue_scattering_model - 10.0 * CT_prior_mismatch - 1.5 * registration_error
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.55 |
| Delta tier | 5 |

## 4. Fingerprint

`02e096b95a77334b4f67c50adfd19d15ede54d4325a9e6d105ef90c6b93d85d5`

## 5. On-chain Registration

- **Chain hash:** `0xf20fc410eae10ba1ee14e60b109063636b6d6a2ca30974d392795bdb55e1cd58`
- **Chain tx hash:** `0x26fbfac65d2296fc59e76f6963763efe2948ba1f1ed72536ebe15bbdcca237de`
- **Chain block:** `41554245`

---

## File Mapping

This bundle consists of: `L2-160-001.md`, `L2-160-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-160-001.md` | Source of truth — edit this | Human or LLM |
| `L2-160-001.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 `L2-160-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._