Pith Number

pith:TF4F5UI6

pith:2004:TF4F5UI6YBYXA7EQJRPH5NLEHU

not attested not anchored not stored refs pending

Age spreads in clusters and associations: the lithium test

Francesco Palla, Sofia Randich

arxiv:astro-ph/0412213 v1 · 2004-12-09 · 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{TF4F5UI6YBYXA7EQJRPH5NLEHU}

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	2026-05-18T01:27:16.343572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99785ed11ec071707c904c5e7eb5643d11faa79881368f9aa2b20cf00282390b

Aliases

arxiv: astro-ph/0412213 · arxiv_version: astro-ph/0412213v1 · doi: 10.48550/arxiv.astro-ph/0412213 · pith_short_12: TF4F5UI6YBYX · pith_short_16: TF4F5UI6YBYXA7EQ · pith_short_8: TF4F5UI6

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/TF4F5UI6YBYXA7EQJRPH5NLEHU \
  | 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: 99785ed11ec071707c904c5e7eb5643d11faa79881368f9aa2b20cf00282390b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0b484c9b1c736eab07a9fe06314b1baf37deabc8d51ec8d1a2535390776b510",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-09T14:57:52Z",
    "title_canon_sha256": "dd263d35fae013ba3cfd5f07a544cddfed44360a1798e89035de799ad71c549c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412213",
    "kind": "arxiv",
    "version": 1
  }
}