Pith Number

pith:QCYA534I

pith:2009:QCYA534IJRJGUJESMN5J3O7ZHN

not attested not anchored not stored refs pending

Entropy function approach to charged BTZ black hole

Yong-Wan Kim, Young-Jai Park, Yun Soo Myung

arxiv:0903.2109 v2 · 2009-03-12 · hep-th · 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{QCYA534IJRJGUJESMN5J3O7ZHN}

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	2026-05-18T02:35:00.480055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80b00eef884c526a2492637a9dbbf93b624fed801d136123f722d3b0e2dcee8b

Aliases

arxiv: 0903.2109 · arxiv_version: 0903.2109v2 · doi: 10.48550/arxiv.0903.2109 · pith_short_12: QCYA534IJRJG · pith_short_16: QCYA534IJRJGUJES · pith_short_8: QCYA534I

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/QCYA534IJRJGUJESMN5J3O7ZHN \
  | 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: 80b00eef884c526a2492637a9dbbf93b624fed801d136123f722d3b0e2dcee8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c33da94dff37e0720e97667aeea8b6c7816d258c6c4c16830430bdaa6d2cbcfc",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-03-12T07:57:10Z",
    "title_canon_sha256": "baaad1f2a49abd0c05179e269a6e63b364baaad93c801645447554ada550cdfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2109",
    "kind": "arxiv",
    "version": 2
  }
}