Pith Number

pith:FSHUPWPB

pith:2013:FSHUPWPBNNI45PPSGJIWTJCRCT

not attested not anchored not stored refs pending

Cosmological Effects of Scalar-Photon Couplings: Dark Energy and Varying-alpha Models

A. Avgoustidis, A. M. R. V. L. Monteiro, C. J. A. P. Martins, G. Luzzi, P. E. Vielzeuf

arxiv:1305.7031 v2 · 2013-05-30 · 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{FSHUPWPBNNI45PPSGJIWTJCRCT}

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	2026-05-18T02:47:44.969024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c8f47d9e16b51cebdf2325169a45114d07cc43dfca28576e1ca193fa6d90574

Aliases

arxiv: 1305.7031 · arxiv_version: 1305.7031v2 · doi: 10.48550/arxiv.1305.7031 · pith_short_12: FSHUPWPBNNI4 · pith_short_16: FSHUPWPBNNI45PPS · pith_short_8: FSHUPWPB

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/FSHUPWPBNNI45PPSGJIWTJCRCT \
  | 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: 2c8f47d9e16b51cebdf2325169a45114d07cc43dfca28576e1ca193fa6d90574

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bb3543c4110e7a80165d574a62b3bded54d6c70a48e81e1109badea9eef7966",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-05-30T08:11:42Z",
    "title_canon_sha256": "bf9e9ea9d7f97ad452905c27a53965e5984d701990c07b37f18ec7067cd57f42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.7031",
    "kind": "arxiv",
    "version": 2
  }
}