Pith Number

pith:L4YRQBB5

pith:1997:L4YRQBB5QAYZ2BGZG2Q3LCBIZX

not attested not anchored not stored refs pending

Optical Gravitational Lensing Experiment. OGLE-2 -- the Second Phase of the OGLE Project

A. Udalski, M. Kubiak, M. Szymanski (Warsaw University Observatory)

arxiv:astro-ph/9710091 v1 · 1997-10-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L4YRQBB5QAYZ2BGZG2Q3LCBIZX}

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.

Cited by

1 paper in Pith

Star Clusters in the Ultraviolet

Receipt and verification

First computed	2026-07-04T15:50:40.356881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f3118043d80319d04d936a1b58828cdff892d3f3d8ba9984ddc92907fca43cd

Aliases

arxiv: astro-ph/9710091 · arxiv_version: astro-ph/9710091v1 · doi: 10.48550/arxiv.astro-ph/9710091 · pith_short_12: L4YRQBB5QAYZ · pith_short_16: L4YRQBB5QAYZ2BGZ · pith_short_8: L4YRQBB5

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/L4YRQBB5QAYZ2BGZG2Q3LCBIZX \
  | 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: 5f3118043d80319d04d936a1b58828cdff892d3f3d8ba9984ddc92907fca43cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b5ac46d267c5141a7480fc9b6a16189ff36542c5b12abc6e2eff187cefceb40",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-10-09T08:42:02Z",
    "title_canon_sha256": "725432d675be33f401b581351e5d0926dfd66381f54aa0cd8d70248918ce52cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9710091",
    "kind": "arxiv",
    "version": 1
  }
}