Pith Number

pith:2L2TZK6O

pith:2011:2L2TZK6O2PJT6ZTZOSRRGUG4WA

not attested not anchored not stored refs pending

The Galactic O-Star Spectroscopic (GOSSS) and Northern Massive Dim Stars (NoMaDS) Surveys, the Galactic O-Star Catalog (GOSC), and Marxist Ghost Buster (MGB)

A. Pellerin, A. Sota, A. T. Gallego Calvente, E. J. Alfaro, J. Ma\'iz Apell\'aniz, M. Penad\'es Ordaz, N. I. Morrell, R. H. Barb\'a, S. Sim\'on-D\'iaz

arxiv:1109.1492 v1 · 2011-09-07 · astro-ph.SR · 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{2L2TZK6O2PJT6ZTZOSRRGUG4WA}

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	2026-05-18T04:13:55.584703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2f53cabced3d33f667974a31350dcb038b636865fc3717a67d8bb38dd0e1d58

Aliases

arxiv: 1109.1492 · arxiv_version: 1109.1492v1 · doi: 10.48550/arxiv.1109.1492 · pith_short_12: 2L2TZK6O2PJT · pith_short_16: 2L2TZK6O2PJT6ZTZ · pith_short_8: 2L2TZK6O

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/2L2TZK6O2PJT6ZTZOSRRGUG4WA \
  | 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: d2f53cabced3d33f667974a31350dcb038b636865fc3717a67d8bb38dd0e1d58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5741cc563bd8dcc2c1dff1a57f13e2a63df1b2ec5e1852a95a77f30bdcf31794",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-07T15:41:54Z",
    "title_canon_sha256": "e0835f9bf049d49e1971232e0d422b0ce7bbeb4fde10b0f135e85bba280cb956"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1492",
    "kind": "arxiv",
    "version": 1
  }
}