Pith Number

pith:N4XIRQMF

pith:2018:N4XIRQMF3JEO3LHAYTYOIBQKM5

not attested not anchored not stored refs pending

The Extremely Luminous Quasar Survey in the Sloan Digital Sky Survey footprint. III. The South Galactic Cap Sample and the Quasar Luminosity Function at Cosmic Noon

Anna Patej, Elisabeth M. Green, Feige Wang, Ian D. McGreer, Jan-Torge Schindler, Jennifer Kadowaki, Jens-Kristian Krogager, Jinyi Yang, Johan P. U. Fynbo, Minghao Yue, Richard Green, Xiaohui Fan, Ya-Lin Wu, Yun-Hsin Huang

arxiv:1812.04639 v1 · 2018-12-11 · 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{N4XIRQMF3JEO3LHAYTYOIBQKM5}

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	2026-05-17T23:54:15.569626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f2e88c185da48edace0c4f0e4060a677d329d3e537d8f3565991d1796433dc9

Aliases

arxiv: 1812.04639 · arxiv_version: 1812.04639v1 · doi: 10.48550/arxiv.1812.04639 · pith_short_12: N4XIRQMF3JEO · pith_short_16: N4XIRQMF3JEO3LHA · pith_short_8: N4XIRQMF

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/N4XIRQMF3JEO3LHAYTYOIBQKM5 \
  | 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: 6f2e88c185da48edace0c4f0e4060a677d329d3e537d8f3565991d1796433dc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22b964f36b2aca10336046e8102e00e1abe643b01035c4c789aa0ecd9808f8dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-12-11T19:00:11Z",
    "title_canon_sha256": "9c2387a2faf5cccf9481cd43661265e8a2ea969046df93f9c71b7a1f7480e9d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.04639",
    "kind": "arxiv",
    "version": 1
  }
}