Pith Number

pith:OF6OVXVT

pith:1998:OF6OVXVTS5EQAFINTMXREFQWHJ

not attested not anchored not stored refs pending

Field #3 of the Palomar-Groningen Survey II. Near-infrared photometry of semiregular variables

2), (2) Institut d'Astrophysique de Paris, (3) Padova Observatory), F. Kerschbaum (1) ((1) Institut fur Astronomie der Univeritat Wien, J. Hron (1), M. Schultheis (1, Y.K. Ng (3)

arxiv:astro-ph/9807321 v2 · 1998-07-30 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OF6OVXVTS5EQAFINTMXREFQWHJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:07:37.180703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

717ceadeb3974900150d9b2f1216163a4ec7ffe320a5f6ca50dad04ed4292b1f

Aliases

arxiv: astro-ph/9807321 · arxiv_version: astro-ph/9807321v2 · doi: 10.48550/arxiv.astro-ph/9807321 · pith_short_12: OF6OVXVTS5EQ · pith_short_16: OF6OVXVTS5EQAFIN · pith_short_8: OF6OVXVT

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/OF6OVXVTS5EQAFINTMXREFQWHJ \
  | 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: 717ceadeb3974900150d9b2f1216163a4ec7ffe320a5f6ca50dad04ed4292b1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91fdfabc3eee8e3642218affab3e3b545f7ce91886b25ea5cf6ea5cbcbcc75c4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-30T16:50:19Z",
    "title_canon_sha256": "9eb530ae631335e9c5d65448bbff7f5ff7fa07b615c59c4e4d178eec215b73b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807321",
    "kind": "arxiv",
    "version": 2
  }
}