Pith Number

pith:IW4NGSEH

pith:2003:IW4NGSEH5E52LF6YMPLQW2BHUD

not attested not anchored not stored refs pending

Very Isolated Early-Type Galaxies

(2) Univ. of California, (3) UCO/Lick Observatory, (4) Center for Astrophysics), A. D. Lewis (2), B. A. Keeney (1), H. W. Epps (3), Irvine, J. T. Stocke (1), R. E. Schild (4) ((1) CASA, Univ. of Colorado

arxiv:astro-ph/0311572 v1 · 2003-11-25 · 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{IW4NGSEH5E52LF6YMPLQW2BHUD}

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	2026-05-18T01:40:37.764791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45b8d34887e93ba597d863d70b6827a0cbab4e0c8f795b8d22a32483ff912bbf

Aliases

arxiv: astro-ph/0311572 · arxiv_version: astro-ph/0311572v1 · doi: 10.48550/arxiv.astro-ph/0311572 · pith_short_12: IW4NGSEH5E52 · pith_short_16: IW4NGSEH5E52LF6Y · pith_short_8: IW4NGSEH

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/IW4NGSEH5E52LF6YMPLQW2BHUD \
  | 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: 45b8d34887e93ba597d863d70b6827a0cbab4e0c8f795b8d22a32483ff912bbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd55fe2b4807ef289601191bdb6ab0e70d5ad727062d3492343fde5371e056e3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-11-25T21:02:25Z",
    "title_canon_sha256": "5fc5dcc78f3c5649fa7ce4f28474e97a255e71d248edd7abc2e1a3685e2b0fb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0311572",
    "kind": "arxiv",
    "version": 1
  }
}