Pith Number

pith:OJIKMLIZ

pith:2002:OJIKMLIZQMQVCAR45A5FBFR5Y3

not attested not anchored not stored refs pending

Seyfert Galaxies in Compact Groups

B. Kelm, G. Sarti, P. Focardi, V. Zitelli

arxiv:astro-ph/0209374 v2 · 2002-09-18 · 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{OJIKMLIZQMQVCAR45A5FBFR5Y3}

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	2026-07-04T14:12:14.635502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7250a62d19832151023ce83a50963dc6e49d9fcc5e9d53a97ef25627c59a17b8

Aliases

arxiv: astro-ph/0209374 · arxiv_version: astro-ph/0209374v2 · doi: 10.48550/arxiv.astro-ph/0209374 · pith_short_12: OJIKMLIZQMQV · pith_short_16: OJIKMLIZQMQVCAR4 · pith_short_8: OJIKMLIZ

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/OJIKMLIZQMQVCAR45A5FBFR5Y3 \
  | 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: 7250a62d19832151023ce83a50963dc6e49d9fcc5e9d53a97ef25627c59a17b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c44758048df4e3d5df8fbffc9874e3151c3689a55e1e41c9aa5aef9317b1770",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-18T15:11:19Z",
    "title_canon_sha256": "902e9234fa6113136b75c461746567de17e526f0da7e5b2bf2be0bf444aa7814"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209374",
    "kind": "arxiv",
    "version": 2
  }
}