Pith Number

pith:XW6O7C4Q

pith:2005:XW6O7C4QPT4AL2RPCHEAGJTFCG

not attested not anchored not stored refs pending

Supermassive Black Hole Mass Functions at Intermediate Redshifts from Spheroid and AGN Luminosity Functions

(2)Kyoto University), Kouji Ohta(2), Naoyuki Tamura(1), Yoshihiro Ueda(2) ((1)University of Durham

arxiv:astro-ph/0509912 v1 · 2005-09-30 · 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{XW6O7C4QPT4AL2RPCHEAGJTFCG}

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	2026-05-18T01:40:33.344184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdbcef8b907cf805ea2f11c803266511b90e8d80865daf411426f0f84853f237

Aliases

arxiv: astro-ph/0509912 · arxiv_version: astro-ph/0509912v1 · doi: 10.48550/arxiv.astro-ph/0509912 · pith_short_12: XW6O7C4QPT4A · pith_short_16: XW6O7C4QPT4AL2RP · pith_short_8: XW6O7C4Q

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/XW6O7C4QPT4AL2RPCHEAGJTFCG \
  | 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: bdbcef8b907cf805ea2f11c803266511b90e8d80865daf411426f0f84853f237

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3142dc2c1f01c4874835af9e8ad4e1c81bd64cab5c346f691eee3074e976db46",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-30T16:20:58Z",
    "title_canon_sha256": "3cee21aee3694129998f1d1a394570f583ebf290b445018f8b869d63662d0b84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509912",
    "kind": "arxiv",
    "version": 1
  }
}