Pith Number

pith:PZT4MOTZ

pith:2025:PZT4MOTZDVCPIAK3PQVBMHE25T

not attested not anchored not stored refs pending

Semi-empirical versus Theoretical Stellar Population Models: a comparison with Star Clusters

Gustavo Bruzual, Igor Chilingarian, Johina M. John, Paula R. T. Coelho, Randa Asad, Stephane Charlot

arxiv:2504.03194 v1 · 2025-04-04 · 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{PZT4MOTZDVCPIAK3PQVBMHE25T}

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	2026-07-05T10:44:27.775359Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e67c63a791d44f4015b7c2a161c9aecf0260ab38f27b908251b632d54fb8518

Aliases

arxiv: 2504.03194 · arxiv_version: 2504.03194v1 · doi: 10.48550/arxiv.2504.03194 · pith_short_12: PZT4MOTZDVCP · pith_short_16: PZT4MOTZDVCPIAK3 · pith_short_8: PZT4MOTZ

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/PZT4MOTZDVCPIAK3PQVBMHE25T \
  | 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: 7e67c63a791d44f4015b7c2a161c9aecf0260ab38f27b908251b632d54fb8518

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08442182bd2aa690b23c6e00a510a1bf5272873383bc315cce3accd67fae291a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-04-04T05:50:24Z",
    "title_canon_sha256": "4d722230b92d9d34d8ba92d6fe96ee5fe8e2a8726c8bdb9ce2dcc2032465c66f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.03194",
    "kind": "arxiv",
    "version": 1
  }
}