Pith Number

pith:LSFZ2LDE

pith:2013:LSFZ2LDE3LDKGFADHU2FE7OQTY

not attested not anchored not stored refs pending

Is the Sun Lighter than the Earth? Isotopic CO in the Photosphere, Viewed through the Lens of 3D Spectrum Synthesis

E. Caffau, H.-G. Ludwig, J. R. Lyons, S. Wedemeyer-B\"ohm, Thomas R. Ayres

arxiv:1301.5281 v1 · 2013-01-22 · 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{LSFZ2LDE3LDKGFADHU2FE7OQTY}

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	2026-05-18T01:52:04.575110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c8b9d2c64dac6a314033d34527dd09e22d165d2bbac12627a07c0a6d08c0014

Aliases

arxiv: 1301.5281 · arxiv_version: 1301.5281v1 · doi: 10.48550/arxiv.1301.5281 · pith_short_12: LSFZ2LDE3LDK · pith_short_16: LSFZ2LDE3LDKGFAD · pith_short_8: LSFZ2LDE

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/LSFZ2LDE3LDKGFADHU2FE7OQTY \
  | 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: 5c8b9d2c64dac6a314033d34527dd09e22d165d2bbac12627a07c0a6d08c0014

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f36136bce4d01ad779a9b00e5d988f8cdaf6dc502fabee4d365c34664c15f2b",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-01-22T19:08:40Z",
    "title_canon_sha256": "342d9d4d0c783448fdb34e9a8acf6fe9fad3a59312fb57f922f168a5c8772d34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5281",
    "kind": "arxiv",
    "version": 1
  }
}