Pith Number

pith:FXAQPD3L

pith:2009:FXAQPD3LVEVIFXWYQQ2SA4I2BC

not attested not anchored not stored refs pending

The nature of the light variability of the silicon star HR 7224

G. W. Henry, J. Krticka, J. Skalicky, J. Ziznovsky, J. Zverko, P. Zverina, Z. Mikulasek

arxiv:0904.0231 v1 · 2009-04-01 · 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{FXAQPD3LVEVIFXWYQQ2SA4I2BC}

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	2026-05-18T02:14:08.244935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dc1078f6ba92a82ded8843520711a08858e5caf491671849dc734217443ff93

Aliases

arxiv: 0904.0231 · arxiv_version: 0904.0231v1 · doi: 10.48550/arxiv.0904.0231 · pith_short_12: FXAQPD3LVEVI · pith_short_16: FXAQPD3LVEVIFXWY · pith_short_8: FXAQPD3L

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/FXAQPD3LVEVIFXWYQQ2SA4I2BC \
  | 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: 2dc1078f6ba92a82ded8843520711a08858e5caf491671849dc734217443ff93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40dad1cf365d5e59561fdaf5d30a100a252897eb60b31851fac21022c5302a1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-04-01T18:13:25Z",
    "title_canon_sha256": "efaeeb34b9d332da5e0e39ee59e8cf64735eaae07949d6311e96729dffa9efe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0231",
    "kind": "arxiv",
    "version": 1
  }
}