Pith Number

pith:NT4WMXHA

pith:2009:NT4WMXHABVZ74WUSA3BS5BTSZ6

not attested not anchored not stored refs pending

Evidence for nonlinear resonant mode coupling in the Beta Cep star HD 180642 (V1449 Aql) from CoRoT space-based photometry

A. Baglin, C. Aerts, C. Catala, E. Michel, F. Carrier, K. Lefever, K. Uytterhoeven, M. Auvergne, M. Briquet, P. Degroote, T. Morel

arxiv:0906.4057 v1 · 2009-06-22 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NT4WMXHABVZ74WUSA3BS5BTSZ6}

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	2026-05-18T02:13:13.416781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cf9665ce00d73fe5a9206c32e8672cfac3f091aada3b6fa70d9a6692ddbb5cd

Aliases

arxiv: 0906.4057 · arxiv_version: 0906.4057v1 · doi: 10.48550/arxiv.0906.4057 · pith_short_12: NT4WMXHABVZ7 · pith_short_16: NT4WMXHABVZ74WUS · pith_short_8: NT4WMXHA

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/NT4WMXHABVZ74WUSA3BS5BTSZ6 \
  | 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: 6cf9665ce00d73fe5a9206c32e8672cfac3f091aada3b6fa70d9a6692ddbb5cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "916979222d1ed03034e925df7c89526be3c7252b0a233ae4da292b259f5919d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-06-22T16:28:52Z",
    "title_canon_sha256": "f2fb3ceff2b5a533c0db9b4c7039212720d8788890f6a648d4a2a5bd4817a8f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4057",
    "kind": "arxiv",
    "version": 1
  }
}