Pith Number

pith:Z6P2Y72R

pith:2013:Z6P2Y72RWCWVCTMSRVI3E3KAHJ

not attested not anchored not stored refs pending

A Closer Look at the Fluctuations in Brightness of SN 2009ip During Its Late 2012 Eruption

Alicia Soderberg, Franz-Josef Hambsch, Ivan Curtis, John C. Martin, Raffaella Margutti, Thiam-Guan Tan

arxiv:1308.3682 v5 · 2013-08-16 · 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{Z6P2Y72RWCWVCTMSRVI3E3KAHJ}

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	2026-05-18T01:48:14.541434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf9fac7f51b0ad514d928d51b26d403a50a6e74033391a495b33412c5655c0f7

Aliases

arxiv: 1308.3682 · arxiv_version: 1308.3682v5 · doi: 10.48550/arxiv.1308.3682 · pith_short_12: Z6P2Y72RWCWV · pith_short_16: Z6P2Y72RWCWVCTMS · pith_short_8: Z6P2Y72R

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/Z6P2Y72RWCWVCTMSRVI3E3KAHJ \
  | 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: cf9fac7f51b0ad514d928d51b26d403a50a6e74033391a495b33412c5655c0f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f36a2d5aca7d8d018d51a4a5b7aefee0d2c5336fd7218d05e4f10d19bc3fe2a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-08-16T18:02:04Z",
    "title_canon_sha256": "d762ebfa74dd8ac835eeaf967613b9d511579960c5faa653a8d5cb578c8e1db8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3682",
    "kind": "arxiv",
    "version": 5
  }
}