Pith Number

pith:WESQPR63

pith:2009:WESQPR63UIGEWECWTSAVPVSW4A

not attested not anchored not stored refs pending

Why Simple Stellar Population models do not reproduce the colours of Galactic open clusters

A. E. Piskunov, E. Schilbach, H. Zinnecker, N. V. Kharchenko, R.-D. Scholz, S. R\"oser

arxiv:0910.0730 v2 · 2009-10-05 · 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{WESQPR63UIGEWECWTSAVPVSW4A}

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	2026-05-18T02:11:26.758341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b12507c7dba20c4b10569c8157d656e001d676ba5ec829c93bbb086a61f57966

Aliases

arxiv: 0910.0730 · arxiv_version: 0910.0730v2 · doi: 10.48550/arxiv.0910.0730 · pith_short_12: WESQPR63UIGE · pith_short_16: WESQPR63UIGEWECW · pith_short_8: WESQPR63

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/WESQPR63UIGEWECWTSAVPVSW4A \
  | 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: b12507c7dba20c4b10569c8157d656e001d676ba5ec829c93bbb086a61f57966

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84dcaa07ed3baec759e080d49e84745d5e1ec53416817a1c207be69b361e42cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-10-05T11:30:06Z",
    "title_canon_sha256": "c61dacc43e8366f7640a9289af0e3a144e026a891e30ae3458bed8d766a9f23d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0730",
    "kind": "arxiv",
    "version": 2
  }
}