Pith Number

pith:NTECSPL6

pith:2001:NTECSPL63WCAEPQXQCTEMSNMJJ

not attested not anchored not stored refs pending

Galactic Cosmochronometry from Radioactive Elements in the Spectra of Very Old Metal-Poor Stars

C. Sneden, J. E. Lawler, J. J. Cowan

arxiv:astro-ph/0109194 v1 · 2001-09-12 · 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{NTECSPL63WCAEPQXQCTEMSNMJJ}

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	2026-07-04T16:24:06.379388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc8293d7edd84023e1780a64649ac4a68414eb8491813b14598b26212f8c803

Aliases

arxiv: astro-ph/0109194 · arxiv_version: astro-ph/0109194v1 · doi: 10.48550/arxiv.astro-ph/0109194 · pith_short_12: NTECSPL63WCA · pith_short_16: NTECSPL63WCAEPQX · pith_short_8: NTECSPL6

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/NTECSPL63WCAEPQXQCTEMSNMJJ \
  | 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: 6cc8293d7edd84023e1780a64649ac4a68414eb8491813b14598b26212f8c803

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d20e1810f0b8e8d732ed84f4f44069f2078deb05c995a3338386683ce5153026",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-12T21:55:40Z",
    "title_canon_sha256": "4890418dea4894b5713e74b366646ddb19bda25e987a7aaa47ca86158d945918"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109194",
    "kind": "arxiv",
    "version": 1
  }
}