Pith Number

pith:5WOYCYEX

pith:1993:5WOYCYEXBKMDU74TKUMMGDQW7E

not attested not anchored not stored refs pending

Star Clusters

Department of Mathematics, Douglas C. Heggie (University of Edinburgh, Edinburgh EH9 3JZ, King's Buildings, Statistics, U.K.)

arxiv:astro-ph/9306015 v1 · 1993-06-18 · 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{5WOYCYEXBKMDU74TKUMMGDQW7E}

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	2026-05-18T01:21:56.723370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed9d8160970a983a7f935518c30e16f931442d9c5afe0f1885ac4f9ad082466d

Aliases

arxiv: astro-ph/9306015 · arxiv_version: astro-ph/9306015v1 · doi: 10.48550/arxiv.astro-ph/9306015 · pith_short_12: 5WOYCYEXBKMD · pith_short_16: 5WOYCYEXBKMDU74T · pith_short_8: 5WOYCYEX

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/5WOYCYEXBKMDU74TKUMMGDQW7E \
  | 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: ed9d8160970a983a7f935518c30e16f931442d9c5afe0f1885ac4f9ad082466d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88a11f74ea18e63720883ce947ab12a7fcbca0a240d0a437bf74b3b18d6771e9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1993-06-18T13:14:36Z",
    "title_canon_sha256": "cb8f3af698effdef29dc4b624cf5081a907d932b489909fc15064741b5e04995"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9306015",
    "kind": "arxiv",
    "version": 1
  }
}