Pith Number

pith:CG4RZ6VL

pith:2018:CG4RZ6VLIG5Y5S6FWPCUR5VJB4

not attested not anchored not stored refs pending

NuSTAR observations of the ultraluminous X-ray source M33 X-8: a black hole in a very high state?

Juri Poutanen, Roman Krivonos, Sergey Sazonov, Sergey Tsygankov

arxiv:1807.10427 v1 · 2018-07-27 · 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{CG4RZ6VLIG5Y5S6FWPCUR5VJB4}

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	2026-05-18T00:08:37.677206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11b91cfaab41bb8ecbc5b3c548f6a90f3e79f5e050eca10cb52ac57a36068163

Aliases

arxiv: 1807.10427 · arxiv_version: 1807.10427v1 · doi: 10.48550/arxiv.1807.10427 · pith_short_12: CG4RZ6VLIG5Y · pith_short_16: CG4RZ6VLIG5Y5S6F · pith_short_8: CG4RZ6VL

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/CG4RZ6VLIG5Y5S6FWPCUR5VJB4 \
  | 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: 11b91cfaab41bb8ecbc5b3c548f6a90f3e79f5e050eca10cb52ac57a36068163

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0a9d5e63b8019f352bc598f886e488d9f4cbdcade79ad0287a7bfc5b952859c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-07-27T03:55:41Z",
    "title_canon_sha256": "0604cb733502f654f992847ad7665a07061cafc3de566422d3fea91b050627bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10427",
    "kind": "arxiv",
    "version": 1
  }
}