Pith Number

pith:EMMI3FKG

pith:2003:EMMI3FKGB2EE5DZANN2YJS6XXK

not attested not anchored not stored refs pending

Constraining Variations in the Fine-structure Constant, Quark Masses and the Strong Interaction

A. M. Wolfe (UCSD), Cambridge), J. K. Webb (UNSW), J. X. Prochaska (UCO/Lick), M. T. Murphy (IoA, V. V. Dzuba (UNSW), V. V. Flambaum (UNSW)

arxiv:astro-ph/0310318 v3 · 2003-10-11 · 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{EMMI3FKGB2EE5DZANN2YJS6XXK}

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	2026-07-04T15:48:02.447572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23188d95460e884e8f206b7584cbd7bab9dac9650b3126f900f2d38f29047bfb

Aliases

arxiv: astro-ph/0310318 · arxiv_version: astro-ph/0310318v3 · doi: 10.48550/arxiv.astro-ph/0310318 · pith_short_12: EMMI3FKGB2EE · pith_short_16: EMMI3FKGB2EE5DZA · pith_short_8: EMMI3FKG

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/EMMI3FKGB2EE5DZANN2YJS6XXK \
  | 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: 23188d95460e884e8f206b7584cbd7bab9dac9650b3126f900f2d38f29047bfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29bf050b938f70c298c254f0acec5178cdacf9ab41bed0458db76032b42699d5",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-10-11T17:11:44Z",
    "title_canon_sha256": "2355e2e819dfe912e9ff46ebb043a45840e41c70d5186cdd6e98163256d284d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0310318",
    "kind": "arxiv",
    "version": 3
  }
}