Pith Number

pith:DTCGVUZJ

pith:2025:DTCGVUZJXWLKV4ADV3IO5KP6OS

not attested not anchored not stored refs pending

Weak-emission-line quasars: A new clue from their optical variability

Gopal-Krishna (CEBS), Hum Chand (CUHP), Ritish Kumar (CUHP), Vibhore Negi (IUCAA)

arxiv:2501.16328 v1 · 2025-01-27 · 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{DTCGVUZJXWLKV4ADV3IO5KP6OS}

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	2026-07-05T10:05:58.616377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cc46ad329bd96aaf003aed0eea9fe749d3ed6237061120c620c5b4dc44f606a

Aliases

arxiv: 2501.16328 · arxiv_version: 2501.16328v1 · doi: 10.48550/arxiv.2501.16328 · pith_short_12: DTCGVUZJXWLK · pith_short_16: DTCGVUZJXWLKV4AD · pith_short_8: DTCGVUZJ

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/DTCGVUZJXWLKV4ADV3IO5KP6OS \
  | 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: 1cc46ad329bd96aaf003aed0eea9fe749d3ed6237061120c620c5b4dc44f606a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f5cec3f7eda9133b4b28c247de54067f74c2f0c254d0144c2f7054f7164d7ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-01-27T18:59:55Z",
    "title_canon_sha256": "4821430cea428fd4e8b09a816a2bbcd43814928ac7c6e1a202fec3955973fd48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.16328",
    "kind": "arxiv",
    "version": 1
  }
}