Pith Number

pith:VE2QWCMX

pith:2009:VE2QWCMXXLMUXHERARNSUR3PJ5

not attested not anchored not stored refs pending

Periastron Passage Triggering of the 19th Century Eruptions of Eta Carinae

Amit Kashi, Noam Soker

arxiv:0912.1439 v2 · 2009-12-08 · 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{VE2QWCMXXLMUXHERARNSUR3PJ5}

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	2026-05-18T02:33:57.250868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9350b0997bad94b9c91045b2a476f4f5c1f0d800cc133b62544c92328e15310

Aliases

arxiv: 0912.1439 · arxiv_version: 0912.1439v2 · doi: 10.48550/arxiv.0912.1439 · pith_short_12: VE2QWCMXXLMU · pith_short_16: VE2QWCMXXLMUXHER · pith_short_8: VE2QWCMX

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/VE2QWCMXXLMUXHERARNSUR3PJ5 \
  | 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: a9350b0997bad94b9c91045b2a476f4f5c1f0d800cc133b62544c92328e15310

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "008d57907d6106e8c4371007396ec6e661ef13aa54e1ccbc5977ab52a8b819e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-08T09:47:31Z",
    "title_canon_sha256": "a7fd0cdec7560bffff283f6c57d3228ed4288dcae91147e1f7dffa92787fc5d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1439",
    "kind": "arxiv",
    "version": 2
  }
}