Pith Number

pith:HWQGWZU2

pith:2013:HWQGWZU2TNFJ5QC4H6DIBB2VZC

not attested not anchored not stored refs pending

A non-pulsating neutron star in the supernova remnant HESS J1731-347 / G353.6-0.7 with a carbon atmosphere

A. Santangelo, D. Klochkov, G. Puehlhofer, K. Werner, S. Simon, V. Suleimanov

arxiv:1307.1230 v1 · 2013-07-04 · astro-ph.HE · 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{HWQGWZU2TNFJ5QC4H6DIBB2VZC}

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	2026-05-18T01:48:59.873489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3da06b669a9b4a9ec05c3f86808755c8849394dc776f9086d8d3dea891228393

Aliases

arxiv: 1307.1230 · arxiv_version: 1307.1230v1 · doi: 10.48550/arxiv.1307.1230 · pith_short_12: HWQGWZU2TNFJ · pith_short_16: HWQGWZU2TNFJ5QC4 · pith_short_8: HWQGWZU2

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/HWQGWZU2TNFJ5QC4H6DIBB2VZC \
  | 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: 3da06b669a9b4a9ec05c3f86808755c8849394dc776f9086d8d3dea891228393

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ef45db327db3bbb9eb6e67c666c31b91ce2d94ae40a351d4c4f87737fd27f8a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-07-04T07:54:21Z",
    "title_canon_sha256": "28bdfbd2f0d3a000c9e1180dfa9b5f768824a21f32d9698c3974528b1d17bac8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1230",
    "kind": "arxiv",
    "version": 1
  }
}