Pith Number

pith:VSI2ZTSW

pith:2010:VSI2ZTSWKQ2WNNXB7R2O57NB6K

not attested not anchored not stored refs pending

A Hidden Population of Massive Stars with Circumstellar Shells Discovered with the Spitzer Space Telescope

D. W. Hoard, J. C. Mauerhan, P. W. Morris, S. D. Van Dyk, S. Kafka, S. Wachter

arxiv:1004.0399 v1 · 2010-04-02 · 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{VSI2ZTSWKQ2WNNXB7R2O57NB6K}

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	2026-05-18T02:08:14.682786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac91acce56543566b6e1fc74eefda1f2937ea9a142f7fe8c2255b54e10eb6a2c

Aliases

arxiv: 1004.0399 · arxiv_version: 1004.0399v1 · doi: 10.48550/arxiv.1004.0399 · pith_short_12: VSI2ZTSWKQ2W · pith_short_16: VSI2ZTSWKQ2WNNXB · pith_short_8: VSI2ZTSW

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/VSI2ZTSWKQ2WNNXB7R2O57NB6K \
  | 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: ac91acce56543566b6e1fc74eefda1f2937ea9a142f7fe8c2255b54e10eb6a2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78b38380365ba39de7d8f8e13068f9e80669217f633765da78dc929fd4a89a0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-04-02T23:10:38Z",
    "title_canon_sha256": "9295b62b9267543e498719b302b20538c4b392cf9dcd07190647c655a0e4f544"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0399",
    "kind": "arxiv",
    "version": 1
  }
}