Pith Number

pith:QTDDCA5U

pith:2004:QTDDCA5UJXKB4O5CSTUKKAT2IV

not attested not anchored not stored refs pending

Embedded Star Clusters in the W51 Giant Molecular Cloud

Bangalore, C. J. Davis (JAC, Hawaii, Hilo, India), M. S. N. Kumar (CAUP, Porto, Portugal), USA), U. S. Kamath (IIA

arxiv:astro-ph/0406639 v1 · 2004-06-29 · 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{QTDDCA5UJXKB4O5CSTUKKAT2IV}

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	2026-05-18T01:40:36.938998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84c63103b44dd41e3ba294e8a5027a456b9d59540d45a50126948fea033428e6

Aliases

arxiv: astro-ph/0406639 · arxiv_version: astro-ph/0406639v1 · doi: 10.48550/arxiv.astro-ph/0406639 · pith_short_12: QTDDCA5UJXKB · pith_short_16: QTDDCA5UJXKB4O5C · pith_short_8: QTDDCA5U

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/QTDDCA5UJXKB4O5CSTUKKAT2IV \
  | 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: 84c63103b44dd41e3ba294e8a5027a456b9d59540d45a50126948fea033428e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6af144deabd54b17e91b68dcbaef75b2ad27931523e9fcb67e0e0f4cddd562fe",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-06-29T07:47:51Z",
    "title_canon_sha256": "78d8da5282bbc33c93dab3ffd4074169fcbc1b76b4445ad5b96d33c84a79d421"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0406639",
    "kind": "arxiv",
    "version": 1
  }
}