Pith Number

pith:G4ZZF7QQ

pith:2009:G4ZZF7QQDIARZQ2Y23KQKIWUZN

not attested not anchored not stored refs pending

On the Anticorrelation Between Galaxy Light Concentration and X-ray-to-Optical Flux Ratio

A. Bongiovanni, A. M. P\'erez Garc\'ia, E. J. Alfaro, J. Cepa, J. I. Gonz\'alez-Serrano, M. A. Lara-L\'opez, M. Fern\'andez Lorenzo, M. Povi\'c, M. S\'anchez-Portal

arxiv:0907.5099 v1 · 2009-07-29 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G4ZZF7QQDIARZQ2Y23KQKIWUZN}

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	2026-05-18T02:12:46.629104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

373392fe101a011cc358d6d50522d4cb6edc80db0aa049cb20d49862226a0b62

Aliases

arxiv: 0907.5099 · arxiv_version: 0907.5099v1 · doi: 10.48550/arxiv.0907.5099 · pith_short_12: G4ZZF7QQDIAR · pith_short_16: G4ZZF7QQDIARZQ2Y · pith_short_8: G4ZZF7QQ

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/G4ZZF7QQDIARZQ2Y23KQKIWUZN \
  | 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: 373392fe101a011cc358d6d50522d4cb6edc80db0aa049cb20d49862226a0b62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "217bb03053cc07d99d1224433b8156b6a8291436dcd44957c9e8fcbb2fd1e7a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-29T12:52:01Z",
    "title_canon_sha256": "db8c61ba239a7b597b07fafa56e7d28d0f4b59747bc93b26e40be7836d542aa0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.5099",
    "kind": "arxiv",
    "version": 1
  }
}