Pith Number

pith:ENIUS7ON

pith:2000:ENIUS7ONOY5ZLHRL7MCUCYBHQT

not attested not anchored not stored refs pending

The Luminosity Function of QSO Host Galaxies

2, (2) STScI, 3), 3. NASA/GSFC), David A. Turnshek (1) ((1) University of Pittsburgh, Stefano Casertano (2), Timothy S. Hamilton (1

arxiv:astro-ph/0011255 v2 · 2000-11-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ENIUS7ONOY5ZLHRL7MCUCYBHQT}

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	2026-07-04T16:17:36.062330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2351497dcd763b959e2bfb0541602784f2d72f072e08fdf8151017d1ec6413d0

Aliases

arxiv: astro-ph/0011255 · arxiv_version: astro-ph/0011255v2 · doi: 10.48550/arxiv.astro-ph/0011255 · pith_short_12: ENIUS7ONOY5Z · pith_short_16: ENIUS7ONOY5ZLHRL · pith_short_8: ENIUS7ON

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/ENIUS7ONOY5ZLHRL7MCUCYBHQT \
  | 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: 2351497dcd763b959e2bfb0541602784f2d72f072e08fdf8151017d1ec6413d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e43f0a659830684abb7ab44120e62794d4eacf8ad81ef457c429d0fd91f5842b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-13T23:19:54Z",
    "title_canon_sha256": "b9c9ad364c37f320e2748d828c71221f4ded457fe518bd5221e4685ece4d9be0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011255",
    "kind": "arxiv",
    "version": 2
  }
}