Pith Number

pith:2JDK53EQ

pith:2009:2JDK53EQ2P3HBPAR6HRUKFUC7C

not attested not anchored not stored refs pending

The spatial distribution of stars in open clusters

Emilio J. Alfaro, Nestor Sanchez

arxiv:0902.1071 v1 · 2009-02-06 · 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{2JDK53EQ2P3HBPAR6HRUKFUC7C}

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	2026-05-18T04:29:16.772406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d246aeec90d3f670bc11f1e3451682f8b67a2428bc1273da36afecc967c9aa27

Aliases

arxiv: 0902.1071 · arxiv_version: 0902.1071v1 · doi: 10.48550/arxiv.0902.1071 · pith_short_12: 2JDK53EQ2P3H · pith_short_16: 2JDK53EQ2P3HBPAR · pith_short_8: 2JDK53EQ

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/2JDK53EQ2P3HBPAR6HRUKFUC7C \
  | 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: d246aeec90d3f670bc11f1e3451682f8b67a2428bc1273da36afecc967c9aa27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c2b1420b91011d83f036ac0691951c7e3402c12d40ea5a838e6cff4871cd9ae",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-02-06T11:52:06Z",
    "title_canon_sha256": "2362ee16ff8232c51915018f82b22aef9bf8f1819fe871a86936949126880ffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1071",
    "kind": "arxiv",
    "version": 1
  }
}