Pith Number

pith:IUHVPMHV

pith:2018:IUHVPMHVN4PP7A347DVU44QED4

not attested not anchored not stored refs pending

H$_2$/HD molecular data for analysis of quasar spectra in search of varying constants

(2) Centre for Astrophysics, (3) LERMA, Astronomy, Australia, E. J. Salumbides (1), E. Roueff (3) ((1) Department of Physics, France), H. Abgrall (3), M. T. Murphy (2), Netherlands, Observatoire de Paris, Supercomputing, Swinburne University of Technology, Vrije Universiteit, W. Ubachs (1)

arxiv:1812.03628 v2 · 2018-12-10 · astro-ph.CO · astro-ph.EP · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IUHVPMHVN4PP7A347DVU44QED4}

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	2026-05-17T23:54:15.596484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

450f57b0f56f1eff837cf8eb4e72041f36da21b7ea0125e989400539826d1cc2

Aliases

arxiv: 1812.03628 · arxiv_version: 1812.03628v2 · doi: 10.48550/arxiv.1812.03628 · pith_short_12: IUHVPMHVN4PP · pith_short_16: IUHVPMHVN4PP7A34 · pith_short_8: IUHVPMHV

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/IUHVPMHVN4PP7A347DVU44QED4 \
  | 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: 450f57b0f56f1eff837cf8eb4e72041f36da21b7ea0125e989400539826d1cc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "167001c5da025b9167a056b0ae02a645328e4d8a55e6eb7f536de1f28d9123d3",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-12-10T05:28:08Z",
    "title_canon_sha256": "0f88fdb4936a5ef47327713787dfe1de77f02074afe5cc0cc5020a1b7e6b085e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03628",
    "kind": "arxiv",
    "version": 2
  }
}