Pith Number

pith:PWVZY6WU

pith:1999:PWVZY6WUL2DZJ5JELT3IYSJS4M

not attested not anchored not stored refs pending

Absorption rate of the Kerr-de Sitter black hole and the Kerr-Newman-de Sitter black hole

Eiichi Takasugi, Hiroshi Umetsu, Hisao Suzuki

arxiv:gr-qc/9911079 v2 · 1999-11-22 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PWVZY6WUL2DZJ5JELT3IYSJS4M}

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	2026-07-04T16:13:55.901248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dab9c7ad45e8794f5245cf68c4932e3167bff2568769fdecde97b0b4540d4fe

Aliases

arxiv: gr-qc/9911079 · arxiv_version: gr-qc/9911079v2 · doi: 10.48550/arxiv.gr-qc/9911079 · pith_short_12: PWVZY6WUL2DZ · pith_short_16: PWVZY6WUL2DZJ5JE · pith_short_8: PWVZY6WU

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/PWVZY6WUL2DZJ5JELT3IYSJS4M \
  | 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: 7dab9c7ad45e8794f5245cf68c4932e3167bff2568769fdecde97b0b4540d4fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a415d2b76f2a4f9654c7d3bcc408ab5f608118781e783d61ac591b61d7806b34",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-11-22T06:48:27Z",
    "title_canon_sha256": "50e55b7231661066150a69356410834ae239480583e81548958964bcc860216a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9911079",
    "kind": "arxiv",
    "version": 2
  }
}