Pith Number

pith:CUCL72SA

pith:2012:CUCL72SABZHR5UJLNBTA6WLBQL

not attested not anchored not stored refs pending

A variable ultraluminous X-ray source in a globular cluster in NGC 4649

(2) Harvard-Smithsonian Center for Astrophysics, 3), (3) Michigan State University, (4) UCO/Lick Observatory, (5) University of Wisconsin, (6) Northwestern University, (7) University of Leicester, (8) University of Crete), A.R. King (7), A. Zezas (8) ((1) Durham University, B. Luo (2), D.-W. Kim (2), G. Fabbiano (2), J.P. Brodie (4), J.S. Gallagher (5), J. Strader (2, M.J. Middleton (1), T. Fragos (2), T.P. Roberts (1), V. Kalogera (6)

arxiv:1210.5163 v1 · 2012-10-18 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CUCL72SABZHR5UJLNBTA6WLBQL}

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	2026-05-18T01:53:46.497543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1504bfea400e4f1ed12b68660f596182f1f80ed886c3b814db982a75415b8a5a

Aliases

arxiv: 1210.5163 · arxiv_version: 1210.5163v1 · doi: 10.48550/arxiv.1210.5163 · pith_short_12: CUCL72SABZHR · pith_short_16: CUCL72SABZHR5UJL · pith_short_8: CUCL72SA

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/CUCL72SABZHR5UJLNBTA6WLBQL \
  | 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: 1504bfea400e4f1ed12b68660f596182f1f80ed886c3b814db982a75415b8a5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa774b1ee38f8123cb6e9987210a87a32b18367526bf7548452bc7aed0b3ce7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-10-18T15:58:11Z",
    "title_canon_sha256": "d8e8bf9ec9d6c1b1d4ea7caa7e44beaf85d1cc8e44765bcbdb4e1bc997db45b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5163",
    "kind": "arxiv",
    "version": 1
  }
}