Pith Number

pith:2FEWK7AE

pith:2001:2FEWK7AEFCQQZS744W5JZA4TAX

not attested not anchored not stored refs pending

Nuclear Chronometers

C. Sneden, J. J. Cowan, J. W. Truran

arxiv:astro-ph/0101438 v1 · 2001-01-24 · astro-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2FEWK7AEFCQQZS744W5JZA4TAX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:00:27.601876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d149657c0428a10ccbfce5ba9c839305d72f25c7146ed046ca1eb14ae126a673

Aliases

arxiv: astro-ph/0101438 · arxiv_version: astro-ph/0101438v1 · doi: 10.48550/arxiv.astro-ph/0101438 · pith_short_12: 2FEWK7AEFCQQ · pith_short_16: 2FEWK7AEFCQQZS74 · pith_short_8: 2FEWK7AE

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/2FEWK7AEFCQQZS744W5JZA4TAX \
  | 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: d149657c0428a10ccbfce5ba9c839305d72f25c7146ed046ca1eb14ae126a673

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50721921430aa5a6f7a12a2e5560b5712b943be5cbc8f5c65a463134de11e67f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-24T19:46:44Z",
    "title_canon_sha256": "c60e0ce93e57f76b1d52ceaa0d2a5ae6344d0f6e51ee39b44bbca404a3cdf627"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101438",
    "kind": "arxiv",
    "version": 1
  }
}