Pith Number

pith:HVZ33EB3

pith:2016:HVZ33EB3NEIN45V7HHOQEUL2Q3

not attested not anchored not stored refs pending

The very low-mass stellar content of the young supermassive Galactic star cluster Westerlund 1

A. Stolte, G. de Marchi, H. Zinnecker, M. Andersen, M. Gennaro, M. R. Meyer, W. Brandner

arxiv:1602.05918 v1 · 2016-02-18 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HVZ33EB3NEIN45V7HHOQEUL2Q3}

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	2026-05-18T00:44:01.570870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d73bd903b6910de76bf39dd02517a86cd97f4d2e1dc276afdb4ddce53bc2de6

Aliases

arxiv: 1602.05918 · arxiv_version: 1602.05918v1 · doi: 10.48550/arxiv.1602.05918 · pith_short_12: HVZ33EB3NEIN · pith_short_16: HVZ33EB3NEIN45V7 · pith_short_8: HVZ33EB3

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/HVZ33EB3NEIN45V7HHOQEUL2Q3 \
  | 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: 3d73bd903b6910de76bf39dd02517a86cd97f4d2e1dc276afdb4ddce53bc2de6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf533ad60b078c60e4f3b355614fbc711034fa4f1be8d2903252de4220d74323",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-02-18T19:24:38Z",
    "title_canon_sha256": "87e5257dfd2e1484ce4753210d0152e587a2a99c8dd7625c889c0f410e88037d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.05918",
    "kind": "arxiv",
    "version": 1
  }
}