Pith Number

pith:WZOIAGEN

pith:2003:WZOIAGENQKGE3UHBYQNIMPHKLE

not attested not anchored not stored refs pending

Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra

Cambridge; UNSW), J. K. Webb (UNSW), M. T. Murphy (IoA, V. V. Flambaum (UNSW)

arxiv:astro-ph/0306483 v1 · 2003-06-24 · astro-ph · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZOIAGENQKGE3UHBYQNIMPHKLE}

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	2026-07-04T15:48:02.389580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b65c80188d828c4dd0e1c41a863cea592252a887c996ae4cec49f19d53125f92

Aliases

arxiv: astro-ph/0306483 · arxiv_version: astro-ph/0306483v1 · doi: 10.48550/arxiv.astro-ph/0306483 · pith_short_12: WZOIAGENQKGE · pith_short_16: WZOIAGENQKGE3UHB · pith_short_8: WZOIAGEN

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/WZOIAGENQKGE3UHBYQNIMPHKLE \
  | 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: b65c80188d828c4dd0e1c41a863cea592252a887c996ae4cec49f19d53125f92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1095b7d026db5f556b8958b3ed236d3b07c4caf788b9c1a0161aca25add99726",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-06-24T03:51:25Z",
    "title_canon_sha256": "cd3cf8ce5cb03f4edc27aa711ec863615570db51e661e15c188ef4155d0d4ac2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0306483",
    "kind": "arxiv",
    "version": 1
  }
}