Pith Number

pith:JK2JS6BA

pith:2013:JK2JS6BADJABKZ7ZMTKXMVC3FH

not attested not anchored not stored refs pending

The UVES Large Program for Testing Fundamental Physics II: Constraints on a Change in {\mu} Towards Quasar HE 0027-1836

C. J. A. P. Martins, D. Reimers, G. Vladilo, H. Fathivavsari, H. Rahmani, J. B. Whitmore, M. Centurion, M. T. Murphy, M. Wendt, P. Molaro, P. Noterdaeme, P. Petitjean, R. Srianand, S. A. Levshakov, S. D'Odorico, S. Lopez, T. M. Evans

arxiv:1307.5864 v1 · 2013-07-22 · astro-ph.CO · 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{JK2JS6BADJABKZ7ZMTKXMVC3FH}

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	2026-05-18T01:48:41.471121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ab49978201a401567f964d576545b29da3608e15bf21cc32843ae0807168869

Aliases

arxiv: 1307.5864 · arxiv_version: 1307.5864v1 · doi: 10.48550/arxiv.1307.5864 · pith_short_12: JK2JS6BADJAB · pith_short_16: JK2JS6BADJABKZ7Z · pith_short_8: JK2JS6BA

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/JK2JS6BADJABKZ7ZMTKXMVC3FH \
  | 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: 4ab49978201a401567f964d576545b29da3608e15bf21cc32843ae0807168869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76cff3dc248f4c2e9c9c8e136e9b15217d3168f1ed1862edf7cb08157e519505",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-22T20:05:00Z",
    "title_canon_sha256": "3d1f8c0960c7c360d13eb10b7f2638dac079e0e64e21da48332d6e4feb2b7a48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.5864",
    "kind": "arxiv",
    "version": 1
  }
}