Pith Number

pith:R6YELO2A

pith:2014:R6YELO2A4BL6A63PPLHNIG367P

not attested not anchored not stored refs pending

Cosmological Evolution of Fundamental Constants: From Theory to Experiment

Matthias Keller, Xavier Calmet

arxiv:1410.2765 v2 · 2014-10-10 · gr-qc · astro-ph.CO · physics.atom-ph · quant-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{R6YELO2A4BL6A63PPLHNIG367P}

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	2026-05-18T01:39:55.137914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fb045bb40e057e07b6f7aced41b7efbc8de68cda9692eff7e8a1eb11d4ce892

Aliases

arxiv: 1410.2765 · arxiv_version: 1410.2765v2 · doi: 10.48550/arxiv.1410.2765 · pith_short_12: R6YELO2A4BL6 · pith_short_16: R6YELO2A4BL6A63P · pith_short_8: R6YELO2A

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/R6YELO2A4BL6A63PPLHNIG367P \
  | 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: 8fb045bb40e057e07b6f7aced41b7efbc8de68cda9692eff7e8a1eb11d4ce892

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "809f7468ea337f981a0bc24b9a963b6cf711b47c87f9a1e04cd11e6163036cdb",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "physics.atom-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-10-10T12:38:04Z",
    "title_canon_sha256": "199b85a768c87a7ee3f9b69e90076e123eedcc7a19df8f50679eee0138d4786d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.2765",
    "kind": "arxiv",
    "version": 2
  }
}