Pith Number

pith:VMYT5ZF5

pith:2018:VMYT5ZF5IPRV75RQDV6EVJ5DAN

not attested not anchored not stored refs pending

Current and future constraints on extended Bekenstein-type models for a varying fine-structure constant

A. C. O. Leite, B. S. A. Silva, C. J. A. P. Martins, C. S. Alves, S. A. Berge, T. A. Silva

arxiv:1801.08089 v1 · 2018-01-24 · astro-ph.CO · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VMYT5ZF5IPRV75RQDV6EVJ5DAN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:25:08.364655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab313ee4bd43e35ff6301d7c4aa7a3036875500efe3d199db92de2bb155f5f30

Aliases

arxiv: 1801.08089 · arxiv_version: 1801.08089v1 · doi: 10.48550/arxiv.1801.08089 · pith_short_12: VMYT5ZF5IPRV · pith_short_16: VMYT5ZF5IPRV75RQ · pith_short_8: VMYT5ZF5

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/VMYT5ZF5IPRV75RQDV6EVJ5DAN \
  | 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: ab313ee4bd43e35ff6301d7c4aa7a3036875500efe3d199db92de2bb155f5f30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91d2a2800537f0a99f1327c64a7bb9d95309775e1e3c3b0f0d841d10cbb21a9c",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-01-24T17:25:02Z",
    "title_canon_sha256": "5891c0e2093bd36ae03d0bf3623f8953ceafb1df83cc4c3cadb9441ed29c2419"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08089",
    "kind": "arxiv",
    "version": 1
  }
}