Pith Number

pith:F3A6F43A

pith:2002:F3A6F43AIDPQCIA4PQ27TYNL3O

not attested not anchored not stored refs pending

The blue to red supergiant ratio in young clusters at various metallicities

A. Maeder, G. Meynet, P. Eggenberger

arxiv:astro-ph/0202478 v1 · 2002-02-26 · 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{F3A6F43AIDPQCIA4PQ27TYNL3O}

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	2026-07-04T16:29:27.945477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ec1e2f36040df01201c7c35f9e1abdbb2a92673182aa55de73d713b02ed0682

Aliases

arxiv: astro-ph/0202478 · arxiv_version: astro-ph/0202478v1 · doi: 10.48550/arxiv.astro-ph/0202478 · pith_short_12: F3A6F43AIDPQ · pith_short_16: F3A6F43AIDPQCIA4 · pith_short_8: F3A6F43A

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/F3A6F43AIDPQCIA4PQ27TYNL3O \
  | 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: 2ec1e2f36040df01201c7c35f9e1abdbb2a92673182aa55de73d713b02ed0682

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc0e6678b0f51313ece45c1aeb5d25d8f8b484556db837b776438df7ac86b494",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-26T11:07:06Z",
    "title_canon_sha256": "ce17e0d802245a286ad3e147800d456ebf36fc846e6aba35615c0a39136dcead"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202478",
    "kind": "arxiv",
    "version": 1
  }
}