Pith Number

pith:B33ATJ5Z

pith:2013:B33ATJ5ZWE7OQYI6QIVX4BABS6

not attested not anchored not stored refs pending

The Spectrum of Thorium from 250 nm to 5500 nm: Ritz Wavelengths and Optimized Energy Levels

Craig J. Sansonetti, Gillian Nave, Stephen L. Redman

arxiv:1308.5229 v3 · 2013-08-23 · astro-ph.IM · astro-ph.EP · physics.atom-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{B33ATJ5ZWE7OQYI6QIVX4BABS6}

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	2026-05-18T01:47:59.066022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ef609a7b9b13ee8611e822b7e040197a165bc93eb8147b438ab672a2724fd61

Aliases

arxiv: 1308.5229 · arxiv_version: 1308.5229v3 · doi: 10.48550/arxiv.1308.5229 · pith_short_12: B33ATJ5ZWE7O · pith_short_16: B33ATJ5ZWE7OQYI6 · pith_short_8: B33ATJ5Z

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/B33ATJ5ZWE7OQYI6QIVX4BABS6 \
  | 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: 0ef609a7b9b13ee8611e822b7e040197a165bc93eb8147b438ab672a2724fd61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1f726a4d58c02e6dc71297cc8f98b67abe926a63c46ad90dbf3eca9103f8995",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-08-23T20:00:03Z",
    "title_canon_sha256": "3b5175877575b83e355f41fa0a82148cc796329acf4cb777c7c2a96b28c6c9e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.5229",
    "kind": "arxiv",
    "version": 3
  }
}