Pith Number

pith:AC4V3DUK

pith:2009:AC4V3DUKOVRYN6DLYIWAJPDRCO

not attested not anchored not stored refs pending

138La-138Ce-136Ce nuclear cosmochronometer of supernova neutrino process

Hitoshi Nakada, Kengo Ogawa, Takehito Hayakawa, Toshitaka Kajino, Toshiyuki Shizuma

arxiv:0901.3593 v1 · 2009-01-23 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AC4V3DUKOVRYN6DLYIWAJPDRCO}

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	2026-07-04T15:38:59.598060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00b95d8e8a756386f86bc22c04bc7113b2ebd651a227e11be0d27d7e93e1cdf5

Aliases

arxiv: 0901.3593 · arxiv_version: 0901.3593v1 · doi: 10.48550/arxiv.0901.3593 · pith_short_12: AC4V3DUKOVRY · pith_short_16: AC4V3DUKOVRYN6DL · pith_short_8: AC4V3DUK

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/AC4V3DUKOVRYN6DLYIWAJPDRCO \
  | 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: 00b95d8e8a756386f86bc22c04bc7113b2ebd651a227e11be0d27d7e93e1cdf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e4a48b90bfce552b3c4c5af531680c59de37938d8cdb7582ba87156991bee45",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-23T02:47:58Z",
    "title_canon_sha256": "74ee0c056e5fb2899d337ae2fd5cdcac7f712d67af130594fc96160f9a867ac2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3593",
    "kind": "arxiv",
    "version": 1
  }
}