Pith Number

pith:LCWQFITF

pith:2000:LCWQFITF33S33KZNDZAP4GQOLJ

not attested not anchored not stored refs pending

The variability of the Seyfert galaxy NGC 2992: the case for a revived AGN

A. Marconi, E.J.M. Colbert, G. Risaliti, K.A. Weaver, M. Dadina, R. Gilli, R. Maiolino

arxiv:astro-ph/0001107 v1 · 2000-01-07 · 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{LCWQFITF33S33KZNDZAP4GQOLJ}

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

2 papers in Pith

Unification models of Active Galactic Nuclei

Kinematic Stratification in Extremely Red Quasars Revealed by JWST

Receipt and verification

First computed	2026-07-04T14:10:05.309770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58ad02a265dee5bdab2d1e40fe1a0e5a523626af5e1908c9e6ac0f0e7807c7c4

Aliases

arxiv: astro-ph/0001107 · arxiv_version: astro-ph/0001107v1 · doi: 10.48550/arxiv.astro-ph/0001107 · pith_short_12: LCWQFITF33S3 · pith_short_16: LCWQFITF33S33KZN · pith_short_8: LCWQFITF

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/LCWQFITF33S33KZNDZAP4GQOLJ \
  | 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: 58ad02a265dee5bdab2d1e40fe1a0e5a523626af5e1908c9e6ac0f0e7807c7c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7be94833cf26308a096e57853bee006a633aedf3f1c0c6a675201ed789935f4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-01-07T14:17:36Z",
    "title_canon_sha256": "e1e92fdf202f027da3da93ae24f194ddab443ba243d0bcd94bb181799af11a21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0001107",
    "kind": "arxiv",
    "version": 1
  }
}