Pith Number

pith:RREXV7YE

pith:2004:RREXV7YEFIAOJSBGGVHRF54KMA

not attested not anchored not stored refs pending

Limits on the temporal variation of the fine structure constant, quark masses and strong interaction from quasar absorption spectra and atomic clock experiments

Adelaide), A. W. Thomas, D. B. Leinweber, R. D. Young (CSSM, V. V. Flambaum (UNSW & IAS Princeton)

arxiv:hep-ph/0402098 v1 · 2004-02-10 · hep-ph · astro-ph · physics.atom-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{RREXV7YEFIAOJSBGGVHRF54KMA}

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	2026-07-04T15:48:03.431931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c497aff042a00e4c826354f12f78a6000405d35fee366d692f932e64c5dcead

Aliases

arxiv: hep-ph/0402098 · arxiv_version: hep-ph/0402098v1 · doi: 10.48550/arxiv.hep-ph/0402098 · pith_short_12: RREXV7YEFIAO · pith_short_16: RREXV7YEFIAOJSBG · pith_short_8: RREXV7YE

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/RREXV7YEFIAOJSBGGVHRF54KMA \
  | 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: 8c497aff042a00e4c826354f12f78a6000405d35fee366d692f932e64c5dcead

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd5403a0681a48344906c04a12a31f4d71cf7e0ec3f5fe2085d2c0f545dcf631",
    "cross_cats_sorted": [
      "astro-ph",
      "physics.atom-ph"
    ],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2004-02-10T03:46:54Z",
    "title_canon_sha256": "8d6e0ddd1c41c3211dfd719665d337ba50dbd30cbcf033c81dc574bfe556c801"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/0402098",
    "kind": "arxiv",
    "version": 1
  }
}