Pith Number

pith:VULFTAJJ

pith:2003:VULFTAJJUTVRIXFYKGNXJDYGAE

not attested not anchored not stored refs pending

The age of the oldest Open Clusters

2), Achim Weiss (2), Garching), Liverpool John Moores University; (2) Max Planck Institute for Astrophysics, Maurizio Salaris (1, Susan M. Percival (1) ((1) Astrophysics Research Institute

arxiv:astro-ph/0310363 v1 · 2003-10-14 · 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{VULFTAJJUTVRIXFYKGNXJDYGAE}

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	2026-07-04T16:37:32.252701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad16598129a4eb145cb8519b748f06013cb2181e627d043e6d1e60ed1955b95c

Aliases

arxiv: astro-ph/0310363 · arxiv_version: astro-ph/0310363v1 · doi: 10.48550/arxiv.astro-ph/0310363 · pith_short_12: VULFTAJJUTVR · pith_short_16: VULFTAJJUTVRIXFY · pith_short_8: VULFTAJJ

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/VULFTAJJUTVRIXFYKGNXJDYGAE \
  | 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: ad16598129a4eb145cb8519b748f06013cb2181e627d043e6d1e60ed1955b95c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ecece7be3ceacee2973882869f21ef2f49481958d450a738a474def113b1bf8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-10-14T13:45:42Z",
    "title_canon_sha256": "9e6147b3fe95a662af08ba089f2d4c9a48cffd719e3b435688101f79a49e74e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0310363",
    "kind": "arxiv",
    "version": 1
  }
}