Pith Number

pith:2OFCI2HD

pith:2023:2OFCI2HDD3RTGA6GGIKEZU3OHN

not attested not anchored not stored refs pending

Time Variation of Fine-Structure Constant Constrained by [O III] Emission-Lines at 1.1<z<3.7

Ge Li, Hongyan Zhou, Luming Sun, XiangJun Chen

arxiv:2310.17947 v1 · 2023-10-27 · astro-ph.GA · 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{2OFCI2HDD3RTGA6GGIKEZU3OHN}

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	2026-07-05T07:05:54.894145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d38a2468e31ee33303c632144cd36e3b77a35996cb68c2a4ab5aea293498bc1f

Aliases

arxiv: 2310.17947 · arxiv_version: 2310.17947v1 · doi: 10.48550/arxiv.2310.17947 · pith_short_12: 2OFCI2HDD3RT · pith_short_16: 2OFCI2HDD3RTGA6G · pith_short_8: 2OFCI2HD

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/2OFCI2HDD3RTGA6GGIKEZU3OHN \
  | 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: d38a2468e31ee33303c632144cd36e3b77a35996cb68c2a4ab5aea293498bc1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a3c9fff7ce86c1a66bf74df3ff57152829b728457e4090588c80871dc8a3c01",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-10-27T07:41:46Z",
    "title_canon_sha256": "26698ad475dd222ca20efc06279add2747332b848838dd59a2b1a9b47620baba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2310.17947",
    "kind": "arxiv",
    "version": 1
  }
}