Pith Number

pith:IVWQ66TL

pith:2003:IVWQ66TLXCZTZPMFUKVQJEQX3I

not attested not anchored not stored refs pending

Old and Young X-ray Point Source Populations in Nearby Galaxies

Andy Ptak, Dave Strickland (JHU), Edward Colbert, Kim Weaver (NASA/GSFC), Tim Heckman

arxiv:astro-ph/0305476 v2 · 2003-05-24 · 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{IVWQ66TLXCZTZPMFUKVQJEQX3I}

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.

Cited by

1 paper in Pith

PEARLS: JWST Counterparts of Micro-Jy Radio Sources in the NEP Time Domain Field. II. All Four Spokes

Receipt and verification

First computed	2026-05-18T04:23:00.926310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

456d0f7a6bb8b33cbd85a2ab049217da3813141542fbbf2aac0695035306170b

Aliases

arxiv: astro-ph/0305476 · arxiv_version: astro-ph/0305476v2 · doi: 10.48550/arxiv.astro-ph/0305476 · pith_short_12: IVWQ66TLXCZT · pith_short_16: IVWQ66TLXCZTZPMF · pith_short_8: IVWQ66TL

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/IVWQ66TLXCZTZPMFUKVQJEQX3I \
  | 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: 456d0f7a6bb8b33cbd85a2ab049217da3813141542fbbf2aac0695035306170b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e7f7d19e00833079b506278c4faeefdf2ba8be0972c42157f9d8a6b5432a28e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-24T00:20:33Z",
    "title_canon_sha256": "33ba1f8feb45539b68b04712e41475199430c9c9bffbb09e884c615bf0e48912"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305476",
    "kind": "arxiv",
    "version": 2
  }
}