Pith Number

pith:UL7R4A7A

pith:2012:UL7R4A7AEUKIE6VN2W4LVCHX2P

not attested not anchored not stored refs pending

Entropy spectrum of a Kerr anti-de Sitter black hole

Deyou Chen, Haitang Yang

arxiv:1204.4312 v2 · 2012-04-19 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UL7R4A7AEUKIE6VN2W4LVCHX2P}

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	2026-05-18T02:53:17.793968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2ff1e03e02514827aadd5b8ba88f7d3dd6026876127f8aaa34f01c9d9a5779b

Aliases

arxiv: 1204.4312 · arxiv_version: 1204.4312v2 · doi: 10.48550/arxiv.1204.4312 · pith_short_12: UL7R4A7AEUKI · pith_short_16: UL7R4A7AEUKIE6VN · pith_short_8: UL7R4A7A

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/UL7R4A7AEUKIE6VN2W4LVCHX2P \
  | 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: a2ff1e03e02514827aadd5b8ba88f7d3dd6026876127f8aaa34f01c9d9a5779b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfca5929bc968555c58be0b48262080450bab98e0886e508b5050570015185ac",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-04-19T11:20:54Z",
    "title_canon_sha256": "fcb793e1f0cf21cbd10112f09d5bc8968c81ee00056ba295302c374c06b64d80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4312",
    "kind": "arxiv",
    "version": 2
  }
}