Pith Number

pith:F33Y4VIY

pith:2014:F33Y4VIY5THZ3XVMHPNVMETM6D

not attested not anchored not stored refs pending

Limits on a Gravitational Field Dependence of the Proton--Electron Mass Ratio from H$_2$ in White Dwarf Stars

2), Australia), Edcel J. Salumbides (1, John D. Barrow (4), Julija Bagdonaite (1), Martin A. Barstow (3), Michael T. Murphy (5), Netherlands (2) University of San Carlos, Philippines (3) University of Leicester, Simon P. Preval (3), UK (4) DAMTP, UK (5) Swinburne University of Technology, Wim Ubachs (1) ((1) VU University Amsterdam

arxiv:1409.1000 v1 · 2014-09-03 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F33Y4VIY5THZ3XVMHPNVMETM6D}

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	2026-05-18T02:41:18.318604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ef78e5518eccf9ddeac3bdb56126cf0d6dd1c0a6030a18c9c87b9ec57040784

Aliases

arxiv: 1409.1000 · arxiv_version: 1409.1000v1 · doi: 10.48550/arxiv.1409.1000 · pith_short_12: F33Y4VIY5THZ · pith_short_16: F33Y4VIY5THZ3XVM · pith_short_8: F33Y4VIY

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/F33Y4VIY5THZ3XVMHPNVMETM6D \
  | 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: 2ef78e5518eccf9ddeac3bdb56126cf0d6dd1c0a6030a18c9c87b9ec57040784

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9f67bccf4b3721bdd99c7dce0134cb99e93c23b7785de6e320a260a3e13df80",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-09-03T09:06:02Z",
    "title_canon_sha256": "b802240b561cf3af410409caab29dec540bf5b753f5eeaf947c372ed59ef99a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1000",
    "kind": "arxiv",
    "version": 1
  }
}