L2 📐 L2-913 ◆ Frontier — not yet benchmarked

Expansion-History Inference Twin

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Introduction

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Expansion-History Inference Twin is a digital twin specification derived from principle L1-913. It defines the forward operator and a 3-dimensional parameter space Ω over which benchmarks are seeded. Each benchmark drawn from this twin is a concrete measurement instance with fixed Ω values; solvers must invert that specific measurement.

Derived from L1 L1-913 Dark Energy — Cosmic Expansion History w(z)

Ω Parameter Space — 3 dimensions

H0: 65–75 model: ΛCDM|w0wa|quintessence Omega_m: 0.25–0.35
δ = 50 hardness 0.9

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Contents

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On-Chain Artifact Registry

Base Sepolia → Base Mainnet on graduation
L1
L1 Principle L1-913 Testnet
L2
Digital Twin — Expansion-History Inference Twin L2-913 Testnet

Digital Twin Specification — L2-913

Ω Parameter Space

ParameterRange
H0 65 – 75
model ΛCDM|w0wa|quintessence
Omega_m 0.25 – 0.35

ε (epsilon)

{
  "expression": "RMS w(z) error \u2264 0.08; H0 recovered within 1 km/s/Mpc",
  "type": "fn"
}
📝 Markdown source — L2-913.md

🎁 Contribute & earn PWM

Improve L2-913 — submit with or without uploading. Accepted submissions earn the 1/16 modify share of A(t).

⬆ Submit by uploading your files earn PWM · unlimited

Upload your .md + .json as a modification of L2-913 — the main way to contribute & earn. Unlimited submissions.

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✨ Or try a free one-click check free · 1×

No files, no typing — we submit a check of L2-913 for you once; it goes through review and earns the 1/16 share. One free no-upload Digital Twin per account.

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🛠 Helper: build your files in ChatGPT / Gemini / Claude

Layer template

⬇ spec.md ⬇ spec.json

Fork L2-913

⬇ L2-913.md ⬇ L2-913.json

Prompt — copy into your LLM

You are helping me submit a MODIFICATION of L2-913 (Expansion-History Inference Twin) to the PWM Protocol — a Digital Twin (L2) artifact.

I will paste a Markdown template (or the current L2-913.md).
1. Rewrite the Markdown so the science is correct and clearly explained for my change.
2. Regenerate the sibling L2-913.json so EVERY field matches the Markdown.
3. Keep the schema in the "File Mapping" footer at the bottom of the MD.
4. Keep the parent reference unchanged unless I ask otherwise.
Rules: the Markdown is the source of truth; use SI units; do NOT invent benchmark scores.
Output each file in its own fenced code block tagged with the filename.

Here is my template:
[PASTE THE .md HERE]