Pith Number

pith:LIN4L6BW

pith:2005:LIN4L6BWO3UQ57TLZZ73S67URU

not attested not anchored not stored refs pending

Color Gradients in Early-type Galaxies: Dependence on Environment and Redshift

F. La Barbera, G. Busarello, M. Capaccioli, P. Merluzzi, R. Gal, R.R. de Carvalho, S.G. Djorgovski

arxiv:astro-ph/0504626 v1 · 2005-04-28 · 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{LIN4L6BWO3UQ57TLZZ73S67URU}

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	2026-07-04T16:52:17.009031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a1bc5f83676e90efe6bce7fb97bf48d201aad053e18d9105b20856a822071c1

Aliases

arxiv: astro-ph/0504626 · arxiv_version: astro-ph/0504626v1 · doi: 10.48550/arxiv.astro-ph/0504626 · pith_short_12: LIN4L6BWO3UQ · pith_short_16: LIN4L6BWO3UQ57TL · pith_short_8: LIN4L6BW

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/LIN4L6BWO3UQ57TLZZ73S67URU \
  | 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: 5a1bc5f83676e90efe6bce7fb97bf48d201aad053e18d9105b20856a822071c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a50e537e864924ef6837eb61bf78ca2535cdfb3708c84046076903ecc3c816a7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-28T09:27:20Z",
    "title_canon_sha256": "0347df7fca2d9002b0941975a9d833ce7d67f1b36540b06de9b367d92b9d0503"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504626",
    "kind": "arxiv",
    "version": 1
  }
}