Pith Number

pith:7PU5HZGY

pith:2014:7PU5HZGYTZ3TB5M4FFQ2PUEQIF

not attested not anchored not stored refs pending

Gravitational entropy of Kerr black holes

Daniela P\'erez, Gustavo E. Romero

arxiv:1407.6941 v1 · 2014-07-25 · 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{7PU5HZGYTZ3TB5M4FFQ2PUEQIF}

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	2026-05-18T01:42:29.958810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbe9d3e4d89e7730f59c2961a7d09041429dec6de17eb6ea96292cfdd5a01fef

Aliases

arxiv: 1407.6941 · arxiv_version: 1407.6941v1 · doi: 10.48550/arxiv.1407.6941 · pith_short_12: 7PU5HZGYTZ3T · pith_short_16: 7PU5HZGYTZ3TB5M4 · pith_short_8: 7PU5HZGY

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/7PU5HZGYTZ3TB5M4FFQ2PUEQIF \
  | 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: fbe9d3e4d89e7730f59c2961a7d09041429dec6de17eb6ea96292cfdd5a01fef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c7f4f48efd5b0a193f437bad9d6fb42b9062ebcecf0bfe77ed6b56bb3b9155b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-07-25T15:31:50Z",
    "title_canon_sha256": "ad40edb78f1dca7feb659e8f4ad2271eb6e0c8f9497021bac83b106d91752a7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6941",
    "kind": "arxiv",
    "version": 1
  }
}