Pith Number

pith:QCPPLNAZ

pith:2014:QCPPLNAZGF3ZTP5OX2RHDUY25B

not attested not anchored not stored refs pending

Discovery of starspots on Vega - First spectroscopic detection of surface structures on a normal A-type star

A. Blaz\`ere, E. Alecian, F. Ligni\`eres, F. Paletou, G.M. Mirouh, G. Wade, H. Carfantan, M. Holschneider, M. Rainer, P. Petit, T. B\"ohm

arxiv:1411.7789 v3 · 2014-11-28 · 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{QCPPLNAZGF3ZTP5OX2RHDUY25B}

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	2026-05-18T01:09:49.518531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

809ef5b419317799bfaebea271d31ae85d00443864d55296f16fe3654d1d61a3

Aliases

arxiv: 1411.7789 · arxiv_version: 1411.7789v3 · doi: 10.48550/arxiv.1411.7789 · pith_short_12: QCPPLNAZGF3Z · pith_short_16: QCPPLNAZGF3ZTP5O · pith_short_8: QCPPLNAZ

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/QCPPLNAZGF3ZTP5OX2RHDUY25B \
  | 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: 809ef5b419317799bfaebea271d31ae85d00443864d55296f16fe3654d1d61a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af0f3a00d909a5998205019d6776086b97dd431ccf617ca037c328bb0061a8ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-11-28T09:20:05Z",
    "title_canon_sha256": "f78f0ff0a9e27eed186242dbc706c29fcbc892e330739415bc3d2611ce284b30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7789",
    "kind": "arxiv",
    "version": 3
  }
}