Pith Number

pith:JPEWZPBA

pith:2018:JPEWZPBARSUGUEMNYF73FKKEOM

not attested not anchored not stored refs pending

The 30-Year Search for the Compact Object in SN 1987A

Aleksandar Cikota, Anders Jerkstrand, Antero Ahola, Bruno Leibundgut, Bryan M. Gaensler, Claes Fransson, C.-Y. Ng, David Burrows, Dennis Alp, Francesco Taddia, George Sonneborn, Giovanna Zanardo, Haley L. Gomez, H.-Thomas Janka, Jacco Th. van Loon, Jason Spyromilio, J. Craig Wheeler, Jesper Sollerman, J. M. Marcaide, Josefin Larsson, Kari A. Frank, Lister Staveley-Smith, Maarten Baes, M. Gabler, M. Matsuura, Patrice Bouchet, Peter Challis, Peter Lundqvist, Phil Cigan, Remy Indebetouw, Robert P. Kirshner, Roger A. Chevalier, Sangwook Park, Seppo Mattila, S. E. Woosley

arxiv:1805.04526 v2 · 2018-05-11 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JPEWZPBARSUGUEMNYF73FKKEOM}

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	2026-05-18T00:05:31.182325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bc96cbc208ca86a118dc17fb2a944733748ed31d7d464777b47ad89b7de0119

Aliases

arxiv: 1805.04526 · arxiv_version: 1805.04526v2 · doi: 10.48550/arxiv.1805.04526 · pith_short_12: JPEWZPBARSUG · pith_short_16: JPEWZPBARSUGUEMN · pith_short_8: JPEWZPBA

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/JPEWZPBARSUGUEMNYF73FKKEOM \
  | 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: 4bc96cbc208ca86a118dc17fb2a944733748ed31d7d464777b47ad89b7de0119

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3adc2f35fe28240502df4104ee98cdcae9ca2a030157adf886d5efdb3b310f19",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-05-11T18:00:03Z",
    "title_canon_sha256": "9c2d17205bb80c45f6a2622f17fd63b92042067e43de4d96a55b0e52ee1a28a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.04526",
    "kind": "arxiv",
    "version": 2
  }
}