Pith Number

pith:PZ24TF3S

pith:2001:PZ24TF3S6OKNSQJRGHTSXRWPKJ

not attested not anchored not stored refs pending

Supermassive Black Holes in Nuclei of Galaxies

John Kormendy, Karl Gebhardt

arxiv:astro-ph/0105230 v1 · 2001-05-14 · 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{PZ24TF3S6OKNSQJRGHTSXRWPKJ}

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.

Cited by

1 paper in Pith

A new model of quasar mass evolution

Receipt and verification

First computed	2026-07-04T16:23:23.294657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e75c99772f394d9413131e72bc6cf5240018fb9958f2cef1b0ff1bdd43c2df0

Aliases

arxiv: astro-ph/0105230 · arxiv_version: astro-ph/0105230v1 · doi: 10.48550/arxiv.astro-ph/0105230 · pith_short_12: PZ24TF3S6OKN · pith_short_16: PZ24TF3S6OKNSQJR · pith_short_8: PZ24TF3S

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/PZ24TF3S6OKNSQJRGHTSXRWPKJ \
  | 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: 7e75c99772f394d9413131e72bc6cf5240018fb9958f2cef1b0ff1bdd43c2df0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7be0524bb55dc739d2a9a2751b2003e0bcf8338d4cf469793b089690707131d7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-05-14T16:33:22Z",
    "title_canon_sha256": "d7f5d8d2cf6bd416f89a55bdd4c6eaaabd848d653d4b7be0b9b7e22ebe9fb6af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0105230",
    "kind": "arxiv",
    "version": 1
  }
}