Pith Number

pith:NNSV2XI4

pith:2012:NNSV2XI4YF3ZDZF7NPDZHFWLLS

not attested not anchored not stored refs pending

The Starburst Cluster Westerlund 1: The Initial Mass Function and Mass Segregation

Beomdu Lim, Byeong-Gon Park, Hwankyung Sung, Hyeonoh Hur, Jae-Joon Lee, Michael S. Bessell, Moo-Young Chun, Sangmo T. Sohn

arxiv:1211.5832 v1 · 2012-11-26 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNSV2XI4YF3ZDZF7NPDZHFWLLS}

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	2026-05-18T01:52:55.273412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b655d5d1cc17791e4bf6bc79396cb5c85046ec218c57aadedb386c793c740b4

Aliases

arxiv: 1211.5832 · arxiv_version: 1211.5832v1 · doi: 10.48550/arxiv.1211.5832 · pith_short_12: NNSV2XI4YF3Z · pith_short_16: NNSV2XI4YF3ZDZF7 · pith_short_8: NNSV2XI4

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/NNSV2XI4YF3ZDZF7NPDZHFWLLS \
  | 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: 6b655d5d1cc17791e4bf6bc79396cb5c85046ec218c57aadedb386c793c740b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee84070192f20285f1045135059a1882bb6e47f99062ef28264e6edb84a97037",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-11-26T01:23:43Z",
    "title_canon_sha256": "7a266ac0534ff8b689099915bbc7a7437122fc0804be9d312a7786009d2f916b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.5832",
    "kind": "arxiv",
    "version": 1
  }
}