# ☆ L3 Benchmark — T1_nominal
**ID:** `L3-158-001-001-T1` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Spec [`L2-158-001`](/artifact/l2/L2-158-001) · ⬆ Principle [`L1-158`](/artifact/l1/L1-158)
> **🏷 Type:** `fixed` · **Tier:** `T1` · **Quality:** `standard`
> **🎯 Threshold (ε):** `23.0`
> **📊 Baselines:** 3 reference solvers benchmarked
> **⛓ On-chain block:** 41554250
---
## 🏷 1. Benchmark Profile
**Type:** `fixed` · **Tier:** `T1` · **Quality:** `standard`
## 2. Operating Point (Ω-tier)
| Parameter | Unit | Value |
|---|---|---|
| H | px | 128 |
| W | px | 128 |
| Z | — | 64 |
| Snr db | dB | 20 |
| Patient motion | — | 0 |
| Low count spect | — | 0 |
| Registration error | — | 0 |
| Attenuation correction bias | — | 0 |
## 3. Success Threshold (ε)
`ε = 23.0`
## 4. Baseline Solvers
| Name | Metric | Score | Q | SSIM | SAM° |
|---|---|---|---|---|---|
| Rigid-Reg | — | 20.5 | 0.88 | — | — |
| AC-OSEM | — | 22.5 | 0.88 | — | — |
| SPECT-CT-Net | — | 25.0 | 0.88 | — | — |
## 5. Registration Metadata
| Property | Value |
|---|---|
| D ibench | 0.14 |
| Rho | 1 |
| Principle id | L1-158 |
| Spec id | L2-158-001 |
**Benchmark hash:** `641b7bc0d97890e968e2f7460ae47b799f9a1852c605f1aa790bb6a87480c090`
## 6. On-chain Registration
- **Chain hash:** `0xc6e808d3bd2344d269c0157c2cf0d07a9c0a0c97f7cce8719cc05f4f2d092f03`
- **Chain tx hash:** `0x5e45bc10260c04ecf648ec2b1b6f1c07cde1815ffa8ec0045499c6afff3ebda6`
- **Chain block:** `41554250`
---
## File Mapping
This bundle consists of: `L3-158-001-001-T1.md`, `L3-158-001-001-T1.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L3-158-001-001-T1.md` | Source of truth — edit this | Human or LLM |
| `L3-158-001-001-T1.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 `L3-158-001-001-T1`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._