Pith Number

pith:OTQPCNXX

pith:2014:OTQPCNXXSYILAIG3N6ZR4OPNJY

not attested not anchored not stored refs pending

Quantitative Spectroscopy of Blue Supergiants in Metal-Poor Dwarf Galaxy NGC 3109

Christopher J. Evans, Fabio Bresolin, Giovanni Carraro, Grzegorz Pietrzynski, Matthew W. Hosek Jr., Miguel A. Urbaneja, Norbert Przybilla, Rolf-Peter Kudritzki, Wolfgang Gieren

arxiv:1402.6358 v1 · 2014-02-25 · astro-ph.GA · 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{OTQPCNXXSYILAIG3N6ZR4OPNJY}

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	2026-05-18T01:44:27.146311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74e0f136f79610b020db6fb31e39ed4e05013587fddf0fdabca284e070b23e43

Aliases

arxiv: 1402.6358 · arxiv_version: 1402.6358v1 · doi: 10.48550/arxiv.1402.6358 · pith_short_12: OTQPCNXXSYIL · pith_short_16: OTQPCNXXSYILAIG3 · pith_short_8: OTQPCNXX

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/OTQPCNXXSYILAIG3N6ZR4OPNJY \
  | 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: 74e0f136f79610b020db6fb31e39ed4e05013587fddf0fdabca284e070b23e43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd63ca1a73259d67373abd39025d2ad39651dc2335f148ab4d573aa96b732ef2",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-02-25T21:41:47Z",
    "title_canon_sha256": "ca2c4f0cc44f8f8596f8205b225b25617776a3ea9db247db411395adc643ab9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6358",
    "kind": "arxiv",
    "version": 1
  }
}