Pith Number

pith:5BCJXU3K

pith:2004:5BCJXU3KWLNXFX5QV644ZD6FK7

not attested not anchored not stored refs pending

Seyfert galaxies in UZC-Compact Groups

B. Kelm, P. Focardi, V. Zitelli

arxiv:astro-ph/0402029 v1 · 2004-02-02 · 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{5BCJXU3KWLNXFX5QV644ZD6FK7}

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	2026-07-04T16:42:57.120138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8449bd36ab2db72dfb0afb9cc8fc557e443dc9e48930f4c884feb57b23d4bb9

Aliases

arxiv: astro-ph/0402029 · arxiv_version: astro-ph/0402029v1 · doi: 10.48550/arxiv.astro-ph/0402029 · pith_short_12: 5BCJXU3KWLNX · pith_short_16: 5BCJXU3KWLNXFX5Q · pith_short_8: 5BCJXU3K

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/5BCJXU3KWLNXFX5QV644ZD6FK7 \
  | 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: e8449bd36ab2db72dfb0afb9cc8fc557e443dc9e48930f4c884feb57b23d4bb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb884491399318da243e5f5b2ddc5365414a22a8626b5718170b51a75bd728d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-02T09:24:14Z",
    "title_canon_sha256": "56259dc0e2046d888a4304047cb22129760313dd2278b96e071de8e2342ec5c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402029",
    "kind": "arxiv",
    "version": 1
  }
}