Pith Number

pith:CYGFKWIN

pith:2006:CYGFKWINHSKPGBDQEKPUHCQY6S

not attested not anchored not stored refs pending

The Host Galaxies and Classification of Active Galactic Nuclei

(2) Max Plank Institut fur Astrophysik, (3) Johns Hopkins University), Brent Groves (2), Guinevere Kauffmann (2), Lisa J. Kewley (1), Tim Heckman (3) ((1) U. Hawaii

arxiv:astro-ph/0605681 v3 · 2006-05-29 · 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{CYGFKWINHSKPGBDQEKPUHCQY6S}

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

Ageing and Quenching: Influence of Galaxy Environment and Nuclear Activity in Transition Stage

Receipt and verification

First computed	2026-07-04T15:45:43.342096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

160c55590d3c94f30470229f438a18f4948d88c4397a15c748a00f7f12f136e8

Aliases

arxiv: astro-ph/0605681 · arxiv_version: astro-ph/0605681v3 · doi: 10.48550/arxiv.astro-ph/0605681 · pith_short_12: CYGFKWINHSKP · pith_short_16: CYGFKWINHSKPGBDQ · pith_short_8: CYGFKWIN

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/CYGFKWINHSKPGBDQEKPUHCQY6S \
  | 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: 160c55590d3c94f30470229f438a18f4948d88c4397a15c748a00f7f12f136e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8546b99b25689dd96bb6d54921969979f515ba62740a30ee7445f923c0ec7cec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-29T16:43:19Z",
    "title_canon_sha256": "8b542a9d7d7085f71d7e7e24d235152d520aa4003c968e04477d313886908230"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605681",
    "kind": "arxiv",
    "version": 3
  }
}