Pith Number

pith:ZRY4JAOX

pith:2004:ZRY4JAOXWZS3UHDHEUBCAPCELM

not attested not anchored not stored refs pending

Massive Star Formation in the W49 Giant Molecular Cloud: Implications for the Formation of Massive Star Clusters

N. L. Homeier & J. Alves

arxiv:astro-ph/0409410 v1 · 2004-09-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZRY4JAOXWZS3UHDHEUBCAPCELM}

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.

Cited by

1 paper in Pith

The Zero-Age Massive Stellar Population of W49A from VLA Observations

Receipt and verification

First computed	2026-07-04T16:44:42.677690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc71c481d7b665ba1c672502203c445b3ea0192fbfd7c5e0cbdd62aa9038bf90

Aliases

arxiv: astro-ph/0409410 · arxiv_version: astro-ph/0409410v1 · doi: 10.48550/arxiv.astro-ph/0409410 · pith_short_12: ZRY4JAOXWZS3 · pith_short_16: ZRY4JAOXWZS3UHDH · pith_short_8: ZRY4JAOX

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/ZRY4JAOXWZS3UHDHEUBCAPCELM \
  | 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: cc71c481d7b665ba1c672502203c445b3ea0192fbfd7c5e0cbdd62aa9038bf90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9dcfcdcf6a282197977ea1501cb0700f17e8cb0d27b8ed1b09b44842a82907c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-16T19:53:31Z",
    "title_canon_sha256": "225aa501b5ba38223e4f551ecded9efc527b0070200a304fb5dd5dba1bdb2e22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409410",
    "kind": "arxiv",
    "version": 1
  }
}