Pith Number

pith:K4NWCUQB

pith:2004:K4NWCUQBXAUNQK2752KIF7R6ND

not attested not anchored not stored refs pending

Oscillation power spectra of the Sun and of Alpha Cen A: observations versus models

A. Nordlund, D. Georgobiani, F. Baudin, M.J. Goupil, R. Samadi, R. Stein, R. Trampedach

arxiv:astro-ph/0409325 v1 · 2004-09-14 · 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{K4NWCUQBXAUNQK2752KIF7R6ND}

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	2026-07-04T14:13:44.999626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

571b615201b828d82b5fee9482fe3e68ff476921e6b5163546340eb39d2dac34

Aliases

arxiv: astro-ph/0409325 · arxiv_version: astro-ph/0409325v1 · doi: 10.48550/arxiv.astro-ph/0409325 · pith_short_12: K4NWCUQBXAUN · pith_short_16: K4NWCUQBXAUNQK27 · pith_short_8: K4NWCUQB

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/K4NWCUQBXAUNQK2752KIF7R6ND \
  | 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: 571b615201b828d82b5fee9482fe3e68ff476921e6b5163546340eb39d2dac34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2322daef25f07276a0c80f0d8d51620cd62fcd68060746e2b537a19990b673e4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-14T09:11:39Z",
    "title_canon_sha256": "ac20c64a1fb2b7378578cc87cbcceb0cee97c48082c8f9efcc75682bd1bb4085"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409325",
    "kind": "arxiv",
    "version": 1
  }
}