Pith Number

pith:IB2333OK

pith:2004:IB2333OKQV34SQX4OHZ76QA7CI

not attested not anchored not stored refs pending

A Census of the Chamaeleon I Star-Forming Region

K. L. Luhman (CfA)

arxiv:astro-ph/0402509 v1 · 2004-02-21 · 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{IB2333OKQV34SQX4OHZ76QA7CI}

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

Lightcurves of stars in the Chamaeleon I Association

Receipt and verification

First computed	2026-07-04T16:43:05.308271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4075bdedca8577c942fc71f3ff401f12375e0b86544a69288579412c98657dc6

Aliases

arxiv: astro-ph/0402509 · arxiv_version: astro-ph/0402509v1 · doi: 10.48550/arxiv.astro-ph/0402509 · pith_short_12: IB2333OKQV34 · pith_short_16: IB2333OKQV34SQX4 · pith_short_8: IB2333OK

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/IB2333OKQV34SQX4OHZ76QA7CI \
  | 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: 4075bdedca8577c942fc71f3ff401f12375e0b86544a69288579412c98657dc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f68158615220e6457df14ae7a918862c7c09cff7e4ccee46475cf6824253b198",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-21T16:39:41Z",
    "title_canon_sha256": "4117d171493a9e2dd7996ad4398c2833f0917e91969a23c035a6959b5b0b653c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402509",
    "kind": "arxiv",
    "version": 1
  }
}