Pith Number

pith:5Q67ZLB4

pith:1998:5Q67ZLB43QKHIFV6GMMLYEDLKA

not attested not anchored not stored refs pending

On the Cosmological Evolution of the Luminosity Function and the Accretion Rate of Quasars

Kristen Menou (Harvard-Smithsonian Center for Astrophysics), Zoltan Haiman (Fermilab)

arxiv:astro-ph/9810426 v2 · 1998-10-27 · 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{5Q67ZLB43QKHIFV6GMMLYEDLKA}

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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.

Cited by

1 paper in Pith

Shape-Preserving Evolution of the Global Ultraviolet Quasar Luminosity Function to $z\simeq7.5$

Receipt and verification

First computed	2026-07-04T16:07:08.618934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec3dfcac3cdc147416be3318bc106b500e6267c403c697814ee9d53f383800e0

Aliases

arxiv: astro-ph/9810426 · arxiv_version: astro-ph/9810426v2 · doi: 10.48550/arxiv.astro-ph/9810426 · pith_short_12: 5Q67ZLB43QKH · pith_short_16: 5Q67ZLB43QKHIFV6 · pith_short_8: 5Q67ZLB4

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/5Q67ZLB43QKHIFV6GMMLYEDLKA \
  | 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: ec3dfcac3cdc147416be3318bc106b500e6267c403c697814ee9d53f383800e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ab7cd0064ba83e2089af0d950408486f503e4145a4a74ef14e6622d970667e6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-27T21:09:36Z",
    "title_canon_sha256": "f5cee9de594dc98b8f1e5f15b1dec8cc3b5f230107968f6d47f512199ee2202c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810426",
    "kind": "arxiv",
    "version": 2
  }
}