Pith Number

pith:3SC4Z43O

pith:2024:3SC4Z43OX6IUUH5UEQNHL4JKWP

not attested not anchored not stored refs pending

What Is the Black Hole Spin in Cyg X-1?

Agnieszka Janiuk, Andrzej A. Zdziarski, Andrzej Niedzwiecki, Gulab Dewangan, Michal Szanecki, Piotr Lubinski, Ranjeev Misra, Srimanta Banerjee, Swadesh Chand

arxiv:2402.12325 v2 · 2024-02-19 · 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{3SC4Z43OX6IUUH5UEQNHL4JKWP}

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.

Cited by

2 papers in Pith

No Evidence for Superradiant Axions in LIGO-Virgo-KAGRA GWTC-5 Binary Black Hole Spins

Scalar fields around black hole binaries in LIGO-Virgo-KAGRA

Receipt and verification

First computed	2026-07-05T08:09:48.431878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc85ccf36ebf914a1fb4241a75f12ab3de965075d664d20d7b3c64222a5d86d9

Aliases

arxiv: 2402.12325 · arxiv_version: 2402.12325v2 · doi: 10.48550/arxiv.2402.12325 · pith_short_12: 3SC4Z43OX6IU · pith_short_16: 3SC4Z43OX6IUUH5U · pith_short_8: 3SC4Z43O

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/3SC4Z43OX6IUUH5UEQNHL4JKWP \
  | 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: dc85ccf36ebf914a1fb4241a75f12ab3de965075d664d20d7b3c64222a5d86d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1217e54a6e231588d433fd82c501ba3f35c1f87fc8bb3483fa3e808b1b37fad8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2024-02-19T17:59:16Z",
    "title_canon_sha256": "77d96ec7950ec6fe9c281359e5683e9e1a8d65d1f9ff7c75c9779c834788ed38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.12325",
    "kind": "arxiv",
    "version": 2
  }
}