Pith Number

pith:ETAPHAR3

pith:2018:ETAPHAR3O7T7E62S3DNG3DRI42

not attested not anchored not stored refs pending

The Extremely Luminous Quasar Survey (ELQS) in the Sloan Digital Sky Survey footprint. II. The North Galactic Cap Sample

Anna Patej, Christine O'Donnell, Eckhart Spalding, Feige Wang, Ian D. McGreer, Jan-Torge Schindler, Jinyi Yang, Jon M. Rees, Nicolas Garavito-Camargo, Ragadeepika Pucha, Richard Green, Xiaohui Fan, Yun-Hsin Huang

arxiv:1806.03374 v2 · 2018-06-08 · 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{ETAPHAR3O7T7E62S3DNG3DRI42}

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	2026-05-18T00:07:06.775948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24c0f3823b77e7f27b52d8da6d8e28e698f99c27328d65ba42f4ff6d58ebdaed

Aliases

arxiv: 1806.03374 · arxiv_version: 1806.03374v2 · doi: 10.48550/arxiv.1806.03374 · pith_short_12: ETAPHAR3O7T7 · pith_short_16: ETAPHAR3O7T7E62S · pith_short_8: ETAPHAR3

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/ETAPHAR3O7T7E62S3DNG3DRI42 \
  | 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: 24c0f3823b77e7f27b52d8da6d8e28e698f99c27328d65ba42f4ff6d58ebdaed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15064283063ce816bafb749f05a25c0d9e85ffe5e7c16a4434b9bcf13b2ae32a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-06-08T23:07:06Z",
    "title_canon_sha256": "936aa32ea14a6278c457e7a65ff3c18f143eb8df8eb088983855d6a3154f7fc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.03374",
    "kind": "arxiv",
    "version": 2
  }
}