Pith Number

pith:XQZ2W75N

pith:2011:XQZ2W75NAAZCRRZHKWLPLDVOGF

not attested not anchored not stored refs pending

A Young Massive Stellar Population Around the Intermediate Mass Black Hole ESO 243-49 HLX-1

2), (2) University of Leicester, (3) Harvard-Smithsonian Center for Astrophysics, (4) University of Portsmouth, (5) University of Southampton, (6) IRAP, (7) University of Oxford, A. Gosling (7), Australia, C. Knigge (5), C. Maraston (4), D. Barret (6), France, J. Pforr (4), K. Wiersema (2) ((1) University of Sydney, M. Servillat (3), N. Webb (6), O. Godet (6), R. Belmont (6), S. Farrell (1, T. Maccarone (5), UK, UK), USA

arxiv:1110.6510 v3 · 2011-10-29 · astro-ph.CO · 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{XQZ2W75NAAZCRRZHKWLPLDVOGF}

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	2026-05-18T01:59:50.205911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc33ab7fad003228c7275596f58eae315889c7334338ba3438da6d5a21253aab

Aliases

arxiv: 1110.6510 · arxiv_version: 1110.6510v3 · doi: 10.48550/arxiv.1110.6510 · pith_short_12: XQZ2W75NAAZC · pith_short_16: XQZ2W75NAAZCRRZH · pith_short_8: XQZ2W75N

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/XQZ2W75NAAZCRRZHKWLPLDVOGF \
  | 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: bc33ab7fad003228c7275596f58eae315889c7334338ba3438da6d5a21253aab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c818bc4de674b9fb2d59e66fdb14f3e120c3cf079f9c4bab063f2df417ccda7",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-29T09:19:08Z",
    "title_canon_sha256": "e446c2ce025226937605eaf49e7791d9c4fcad6c26a747e6057e6caa20a48974"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.6510",
    "kind": "arxiv",
    "version": 3
  }
}