Pith Number

pith:PNIFLX2G

pith:2002:PNIFLX2GOZRT7BYG7LOYVG5JNL

not attested not anchored not stored refs pending

New catalogue of optically visible open clusters and candidates

A. Moitinho (UNAM), B.S. Alessi (IAG), J.R.D. Lepine (IAG), W.S. Dias (IAG)

arxiv:astro-ph/0203351 v1 · 2002-03-20 · 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{PNIFLX2GOZRT7BYG7LOYVG5JNL}

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	2026-07-04T16:29:34.754022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b5055df4676633f8706fadd8a9ba96ad742028528a3bd8f8682a916f7703427

Aliases

arxiv: astro-ph/0203351 · arxiv_version: astro-ph/0203351v1 · doi: 10.48550/arxiv.astro-ph/0203351 · pith_short_12: PNIFLX2GOZRT · pith_short_16: PNIFLX2GOZRT7BYG · pith_short_8: PNIFLX2G

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/PNIFLX2GOZRT7BYG7LOYVG5JNL \
  | 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: 7b5055df4676633f8706fadd8a9ba96ad742028528a3bd8f8682a916f7703427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15b188e3dd51abbadf095e37adb1c0220bce4066b4b45afdb4e68f754de3c83c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-03-20T20:41:32Z",
    "title_canon_sha256": "90ef52acfbf8b2afe6186bb0ebf21335fa27720e941d873b6de25ec5cf7586ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0203351",
    "kind": "arxiv",
    "version": 1
  }
}