Pith Number

pith:RUPY6JMZ

pith:2019:RUPY6JMZADTZUT54EUV4UFFOCJ

not attested not anchored not stored refs pending

Near-infrared spectroscopy of the massive stellar population of W51: evidence for multi-seeded star formation

A. Bik, A. Pasquali, A. Stolte, M. Zhang, S. -W. Wu, Th. Henning, W. Brandner

arxiv:1902.05460 v1 · 2019-02-14 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUPY6JMZADTZUT54EUV4UFFOCJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:48:23.401326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d1f8f259900e79a4fbc252bca14ae127e2eaaed83c9c619821d28808975fcbb

Aliases

arxiv: 1902.05460 · arxiv_version: 1902.05460v1 · doi: 10.48550/arxiv.1902.05460 · pith_short_12: RUPY6JMZADTZ · pith_short_16: RUPY6JMZADTZUT54 · pith_short_8: RUPY6JMZ

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/RUPY6JMZADTZUT54EUV4UFFOCJ \
  | 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: 8d1f8f259900e79a4fbc252bca14ae127e2eaaed83c9c619821d28808975fcbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "904f685303ea01f5e7ac013900eb368270c25db9562352481b644567def4ff7f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-14T15:51:34Z",
    "title_canon_sha256": "48258b1e4a34c92ae31bf5a41c12b6972749ba7b18ec2497c86607f6a0348ee6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05460",
    "kind": "arxiv",
    "version": 1
  }
}