Pith Number

pith:ZC2WAR36

pith:2016:ZC2WAR36PBLFOBP76IGBS2OZHU

not attested not anchored not stored refs pending

NuSTAR and XMM-Newton observations of the ultraluminous X-ray source NGC 5643 X-1

Moscow, Roman Krivonos, Russia), Sergey Sazonov (IKI

arxiv:1608.07445 v2 · 2016-08-26 · 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{ZC2WAR36PBLFOBP76IGBS2OZHU}

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	2026-05-18T01:07:15.262267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8b560477e78565705fff20c1969d93d34cce24393527327f17ec87b9469e0f1

Aliases

arxiv: 1608.07445 · arxiv_version: 1608.07445v2 · doi: 10.48550/arxiv.1608.07445 · pith_short_12: ZC2WAR36PBLF · pith_short_16: ZC2WAR36PBLFOBP7 · pith_short_8: ZC2WAR36

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/ZC2WAR36PBLFOBP76IGBS2OZHU \
  | 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: c8b560477e78565705fff20c1969d93d34cce24393527327f17ec87b9469e0f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b402e831c4f5d2a2e7f4db718459aefa35772c9bfa11d7d13b803a626c90fb1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-08-26T13:01:19Z",
    "title_canon_sha256": "e8e9463f754ab81736fff2d3fd340db8dfac2e3a6cb1abf06274b20f3fbd9de8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.07445",
    "kind": "arxiv",
    "version": 2
  }
}