Pith Number

pith:SW6KXL4W

pith:2011:SW6KXL4WMY6EPCFD4GUOBK7CZH

not attested not anchored not stored refs pending

Zeta Pup: the merger of at least two massive stars

Dany Vanbeveren

arxiv:1109.6497 v1 · 2011-09-29 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SW6KXL4WMY6EPCFD4GUOBK7CZH}

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	2026-05-18T04:12:01.435884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95bcabaf96663c4788a3e1a8e0abe2c9e691f4c1896b95c7dbe61fe4b3117ecb

Aliases

arxiv: 1109.6497 · arxiv_version: 1109.6497v1 · doi: 10.48550/arxiv.1109.6497 · pith_short_12: SW6KXL4WMY6E · pith_short_16: SW6KXL4WMY6EPCFD · pith_short_8: SW6KXL4W

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/SW6KXL4WMY6EPCFD4GUOBK7CZH \
  | 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: 95bcabaf96663c4788a3e1a8e0abe2c9e691f4c1896b95c7dbe61fe4b3117ecb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21b22f6c97ce038cb77063b7c921d52fe4726070ae846c2ddc35daa37151c225",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-29T12:05:11Z",
    "title_canon_sha256": "02e51c93239fc7566c0e5411da02de38a313365ded3cf29f8d12d4995426e645"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6497",
    "kind": "arxiv",
    "version": 1
  }
}