Pith Number

pith:IPO2OAQP

pith:2004:IPO2OAQPLIAOTYZ57BGISTAF4T

not attested not anchored not stored refs pending

X-ray source overdensities in Chandra distant cluster fields: a new probe to map the cosmic tapestry?

G.G.C. Palumbo, G.Malaguti, M.Branchesi, M.Cappi, M.Dadina, N.Cappelluti, V. D'Elia

arxiv:astro-ph/0409434 v2 · 2004-09-17 · 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{IPO2OAQPLIAOTYZ57BGISTAF4T}

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	2026-07-04T16:44:42.874280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43dda7020f5a00e9e33df84c894c05e4cbb8c39bcacd4de02f36a0ffba90d8b6

Aliases

arxiv: astro-ph/0409434 · arxiv_version: astro-ph/0409434v2 · doi: 10.48550/arxiv.astro-ph/0409434 · pith_short_12: IPO2OAQPLIAO · pith_short_16: IPO2OAQPLIAOTYZ5 · pith_short_8: IPO2OAQP

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/IPO2OAQPLIAOTYZ57BGISTAF4T \
  | 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: 43dda7020f5a00e9e33df84c894c05e4cbb8c39bcacd4de02f36a0ffba90d8b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53aa0023bc73dfee3e6227441aa96883fac5e6ce3e57f39ddebf09363b1687d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-17T16:33:08Z",
    "title_canon_sha256": "37e945b4bcfdee07b115f617d6bc34c906c4ca178c148fbadb5361e00f592f5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409434",
    "kind": "arxiv",
    "version": 2
  }
}