Pith Number

pith:35PPKASE

pith:2018:35PPKASES6SLD6EBHHMIOZQFIN

not attested not anchored not stored refs pending

The massive star population of the Virgo Cluster galaxy NGC 4535

A. Nota, A.Z. Bonanos, D. Hatzidimitriou, E. Pouliasis, I. Bellas-Velidis, K.V. Sokolovsky, M.I. Moretti, M. Kopsacheili, M. Kourniotis, M. Yang, P. Gavras, S. Lianou, Z.T. Spetsieri

arxiv:1807.11493 v1 · 2018-07-30 · 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{35PPKASES6SLD6EBHHMIOZQFIN}

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	2026-05-18T00:01:28.932519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df5ef5024497a4b1f88139d88766054343a17c58430de0586045f41cb81d0458

Aliases

arxiv: 1807.11493 · arxiv_version: 1807.11493v1 · doi: 10.48550/arxiv.1807.11493 · pith_short_12: 35PPKASES6SL · pith_short_16: 35PPKASES6SLD6EB · pith_short_8: 35PPKASE

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/35PPKASES6SLD6EBHHMIOZQFIN \
  | 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: df5ef5024497a4b1f88139d88766054343a17c58430de0586045f41cb81d0458

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4de0c757acff6fa2b571474cd03430b17927ef011d51bbc9da954010c725b8d1",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-30T18:00:03Z",
    "title_canon_sha256": "c587e2aaf6ff0c418c4acd266ce13e2ee8562828dbf8da82e680fce415ee3f31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.11493",
    "kind": "arxiv",
    "version": 1
  }
}