Pith Number

pith:2AH7EWG4

pith:2002:2AH7EWG4VHCQHDBUJVPHJNMMAS

not attested not anchored not stored refs pending

A Correlation between Light Concentration and Cluster Local Density for Elliptical Galaxies

C.M. Gutierrez, I. Trujillo, J.A.L. Aguerri, J. Cepa, N. Caon

arxiv:astro-ph/0205291 v1 · 2002-05-17 · 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{2AH7EWG4VHCQHDBUJVPHJNMMAS}

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	2026-07-04T16:30:01.831068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d00ff258dca9c5038c344d5e74b58c04a88bbcbdaaadb59167ce36e9f11d7840

Aliases

arxiv: astro-ph/0205291 · arxiv_version: astro-ph/0205291v1 · doi: 10.48550/arxiv.astro-ph/0205291 · pith_short_12: 2AH7EWG4VHCQ · pith_short_16: 2AH7EWG4VHCQHDBU · pith_short_8: 2AH7EWG4

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/2AH7EWG4VHCQHDBUJVPHJNMMAS \
  | 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: d00ff258dca9c5038c344d5e74b58c04a88bbcbdaaadb59167ce36e9f11d7840

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4dc7bc56ad63e398c861d1e2fa6994119e117c402b8dd8dfc9520d659d1169a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-17T11:25:38Z",
    "title_canon_sha256": "c28382842c90ae251e7e803fdd04c49238f40870078a96b34f2c93c9317651b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205291",
    "kind": "arxiv",
    "version": 1
  }
}