Pith Number

pith:EWPLAVIU

pith:2009:EWPLAVIUX5M4EGCFPEREFVRRF5

not attested not anchored not stored refs pending

gamma Cassiopeiae: an X-ray Be star with personality

Brazil; 2- Catholic University of America, Christian Motch (3); (1-IAG/USP, France), Myron A. Smith (2), Raimundo Lopes de Oliveira (1), USA; 3- Observatoire Astronomique de Strasbourg

arxiv:0903.2600 v2 · 2009-03-15 · astro-ph.HE · 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{EWPLAVIUX5M4EGCFPEREFVRRF5}

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	2026-05-18T02:14:28.224850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

259eb05514bf59c21845792242d6312f41a702d3669729837bda40b396759c3d

Aliases

arxiv: 0903.2600 · arxiv_version: 0903.2600v2 · doi: 10.48550/arxiv.0903.2600 · pith_short_12: EWPLAVIUX5M4 · pith_short_16: EWPLAVIUX5M4EGCF · pith_short_8: EWPLAVIU

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/EWPLAVIUX5M4EGCFPEREFVRRF5 \
  | 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: 259eb05514bf59c21845792242d6312f41a702d3669729837bda40b396759c3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc4129efacf41cc4be9d0d938f413fda9dec1604290c284d02746ab6ace7a18f",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-03-15T02:20:19Z",
    "title_canon_sha256": "25a045f9e64dc086dc5d800f501efd5544e40afe58fda8f5697f0aa0610004b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2600",
    "kind": "arxiv",
    "version": 2
  }
}