Pith Number

pith:ACTJCUZ7

pith:2011:ACTJCUZ7UAWWVMLHDPQHTCGDWF

not attested not anchored not stored refs pending

The VLT-FLAMES Tarantula Survey III: A very massive star in apparent isolation from the massive cluster R136

A. de Koter, A. Herrero, A. Z. Bonanos, C. J. Evans, D. J. Lennon, E. Bressert, E. Doran, F. Najarro, G. Gr\"afener, H. Sana, I. Soszynski, J. Ma\'iz Apell\'aniz, Joachim M. Bestenlehner, Jorick S. Vink, K. Friedrich, N. Bastian, N. Langer, P. A. Crowther, V. H\'enault-Brunet, W. D. Taylor

arxiv:1105.1775 v1 · 2011-05-09 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ACTJCUZ7UAWWVMLHDPQHTCGDWF}

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	2026-05-18T04:22:31.562596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00a691533fa02d6ab1671be07988c3b150a038a0ba17fcd1b5d0071e9ddfa65b

Aliases

arxiv: 1105.1775 · arxiv_version: 1105.1775v1 · doi: 10.48550/arxiv.1105.1775 · pith_short_12: ACTJCUZ7UAWW · pith_short_16: ACTJCUZ7UAWWVMLH · pith_short_8: ACTJCUZ7

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/ACTJCUZ7UAWWVMLHDPQHTCGDWF \
  | 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: 00a691533fa02d6ab1671be07988c3b150a038a0ba17fcd1b5d0071e9ddfa65b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "908bec99bf48ecc29edc3b1b07822042c4c3e886a6ad872bc8d825381e0ad3eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-05-09T20:00:04Z",
    "title_canon_sha256": "400be7c9f4b24495e3a0890e1473bab591b5e59aefb45e70861445e314ebc160"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.1775",
    "kind": "arxiv",
    "version": 1
  }
}