Pith Number

pith:SOPP2GQA

pith:1997:SOPP2GQACQGRCCTDCATJ64SQVG

not attested not anchored not stored refs pending

Black Hole Spin in X-Ray Binaries: Observational Consequences

S. N. Zhang, Wan Chen, Wei Cui

arxiv:astro-ph/9704072 v2 · 1997-04-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SOPP2GQACQGRCCTDCATJ64SQVG}

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

1 paper in Pith

Estimation of black hole spins in low-mass AGNs and comparison with other types of AGNs

Receipt and verification

First computed	2026-07-04T16:02:57.260945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

939efd1a00140d110a6310269f7250a9852bb3ae40a8a0ef4619ef73106e03fc

Aliases

arxiv: astro-ph/9704072 · arxiv_version: astro-ph/9704072v2 · doi: 10.48550/arxiv.astro-ph/9704072 · pith_short_12: SOPP2GQACQGR · pith_short_16: SOPP2GQACQGRCCTD · pith_short_8: SOPP2GQA

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/SOPP2GQACQGRCCTDCATJ64SQVG \
  | 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: 939efd1a00140d110a6310269f7250a9852bb3ae40a8a0ef4619ef73106e03fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52bbfb2a49f912f97faf0f3da649b08cb73fb41a533f6e1b5e23a2e36ee55656",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-09T20:24:52Z",
    "title_canon_sha256": "1135ad06c4f90e60c92e9980cac550b6c03d08f26ffbf99d7cea3bfda9f058f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704072",
    "kind": "arxiv",
    "version": 2
  }
}