Pith Number

pith:D6S2NUTO

pith:2024:D6S2NUTOOM7OKVGIKT6LVYHFF7

not attested not anchored not stored refs pending

Measuring the Time Variation of the Fine-structure Constant with Quasars Detected by LAMOST

Jin-Nan Wei, Jun-Jie Wei, Mart\'in L\'opez-Corredoira, Rui-Jie Chen, Xue-Feng Wu

arxiv:2409.01554 v3 · 2024-09-03 · astro-ph.CO · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D6S2NUTOOM7OKVGIKT6LVYHFF7}

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	2026-07-05T09:57:46.134938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fa5a6d26e733ee554c854fcbae0e52ffa0e0b6648faf2ef5b4510b2b7b48a64

Aliases

arxiv: 2409.01554 · arxiv_version: 2409.01554v3 · doi: 10.48550/arxiv.2409.01554 · pith_short_12: D6S2NUTOOM7O · pith_short_16: D6S2NUTOOM7OKVGI · pith_short_8: D6S2NUTO

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/D6S2NUTOOM7OKVGIKT6LVYHFF7 \
  | 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: 1fa5a6d26e733ee554c854fcbae0e52ffa0e0b6648faf2ef5b4510b2b7b48a64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4605d88c7a3e203ae955ce529b2abc20777f23741a4653150f4634f359e7f653",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2024-09-03T02:46:19Z",
    "title_canon_sha256": "c743856cd69370976fcc44adfba5bb6fdaa123882df1e451ffff4a29ed831a5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2409.01554",
    "kind": "arxiv",
    "version": 3
  }
}