Pith Number

pith:P7GRKKT7

pith:2011:P7GRKKT7EJ77VJ6MP57LHEGZ7H

not attested not anchored not stored refs pending

Multi-Wavelength Implications of the Companion Star in Eta Carinae

Atsuo Okazaki, Christopher Russell, D. John Hillier, Jose H. Groh, Stanley P. Owocki, Theodore R. Gull, Thomas I. Madura

arxiv:1111.2280 v1 · 2011-11-09 · 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{P7GRKKT7EJ77VJ6MP57LHEGZ7H}

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	2026-05-18T04:08:43.677498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fcd152a7f227ffaa7cc7f7eb390d9f9dc26b1c1c9e817ec8f655de7da46b806

Aliases

arxiv: 1111.2280 · arxiv_version: 1111.2280v1 · doi: 10.48550/arxiv.1111.2280 · pith_short_12: P7GRKKT7EJ77 · pith_short_16: P7GRKKT7EJ77VJ6M · pith_short_8: P7GRKKT7

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/P7GRKKT7EJ77VJ6MP57LHEGZ7H \
  | 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: 7fcd152a7f227ffaa7cc7f7eb390d9f9dc26b1c1c9e817ec8f655de7da46b806

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5746a6a91a9f62435ed9fe1d93131b3f7ba3521552843bb8e5e63cd42e34416c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-11-09T17:21:03Z",
    "title_canon_sha256": "b7098f0765eba8147bacec6922cdf13b18b1bdad367bf7903d8b3363df7518d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2280",
    "kind": "arxiv",
    "version": 1
  }
}