Pith Number

pith:4G2QLQXQ

pith:2003:4G2QLQXQJ63SKYQCSH7CQH36SN

not attested not anchored not stored refs pending

Model-independent dark energy test with sigma_8 using results from the Wilkinson Microwave Anisotropy Probe

David Parkinson, Edmund J. Copeland, Martin Kunz, Pier-Stefano Corasaniti

arxiv:astro-ph/0307346 v2 · 2003-07-18 · astro-ph · gr-qc · hep-ph · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4G2QLQXQJ63SKYQCSH7CQH36SN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:40:26.991340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1b505c2f04fb725620291fe281f7e9371646076a700f2a3d33e17a8590dc8cf

Aliases

arxiv: astro-ph/0307346 · arxiv_version: astro-ph/0307346v2 · doi: 10.48550/arxiv.astro-ph/0307346 · pith_short_12: 4G2QLQXQJ63S · pith_short_16: 4G2QLQXQJ63SKYQC · pith_short_8: 4G2QLQXQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4G2QLQXQJ63SKYQCSH7CQH36SN \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e1b505c2f04fb725620291fe281f7e9371646076a700f2a3d33e17a8590dc8cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "363bd18049dadb5a6143efc8727d08aeceb997abda509279f224b1db69e3756d",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-07-18T16:05:44Z",
    "title_canon_sha256": "42f88efe03ed27465136d11d14de81a5618f33eed942fea1ca0e2bd8ae6798f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0307346",
    "kind": "arxiv",
    "version": 2
  }
}