Pith Number

pith:DG46DVCV

pith:2025:DG46DVCVSHWN6UXRRLVBVPZDUL

not attested not anchored not stored refs pending

From Nonextremal to Extremal: Entropy of Reissner-Nordstr\"om and Kerr black holes Revisited

C. Fairoos, Chiranjeeb Singha

arxiv:2505.16309 v1 · 2025-05-22 · 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{DG46DVCVSHWN6UXRRLVBVPZDUL}

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

Black hole thermodynamics and topology

Receipt and verification

First computed	2026-07-05T11:07:33.047087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19b9e1d45591ecdf52f18aea1abf23a2c396826d5ddad9db2527a97da072f99f

Aliases

arxiv: 2505.16309 · arxiv_version: 2505.16309v1 · doi: 10.48550/arxiv.2505.16309 · pith_short_12: DG46DVCVSHWN · pith_short_16: DG46DVCVSHWN6UXR · pith_short_8: DG46DVCV

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/DG46DVCVSHWN6UXRRLVBVPZDUL \
  | 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: 19b9e1d45591ecdf52f18aea1abf23a2c396826d5ddad9db2527a97da072f99f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6ca2747c48334393c9af3fde0aa17c1d8a9a43c1b7c3fa49b70c2cdcf5cdf2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-05-22T07:05:26Z",
    "title_canon_sha256": "1692308bd12a6e7ec877460faf237b58c1dedc49316aea5ed93140fd43246395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.16309",
    "kind": "arxiv",
    "version": 1
  }
}