Pith Number

pith:DA3UHQ2L

pith:2011:DA3UHQ2L5DS4GCTDTOZFKVC6ET

not attested not anchored not stored refs pending

Massive stars in the Cl 1813-178 Cluster. An episode of massive star formation in the W33 complex

Ben Davies, Christine Trombley, Donald F. Figer, Elena Valenti, Francisco Najarro, Maria Messineo, R. Micheal Rich, Rolf P. Kudritzki

arxiv:1103.4975 v1 · 2011-03-25 · 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{DA3UHQ2L5DS4GCTDTOZFKVC6ET}

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	2026-05-18T02:02:45.013833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

183743c34be8e5c30a639bb255545e24d5c024e964f07602e53ea77bce8e00d0

Aliases

arxiv: 1103.4975 · arxiv_version: 1103.4975v1 · doi: 10.48550/arxiv.1103.4975 · pith_short_12: DA3UHQ2L5DS4 · pith_short_16: DA3UHQ2L5DS4GCTD · pith_short_8: DA3UHQ2L

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/DA3UHQ2L5DS4GCTDTOZFKVC6ET \
  | 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: 183743c34be8e5c30a639bb255545e24d5c024e964f07602e53ea77bce8e00d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09de8401c7946c22432709e344fb417e52859aaf44241be1deab18a35c23cb14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-03-25T14:17:13Z",
    "title_canon_sha256": "420f3194474d7cd73aaff2f6d81f5b908fdbd031448f1ceb71e6b4641c40079d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4975",
    "kind": "arxiv",
    "version": 1
  }
}