Pith Number

pith:HFJ42DSZ

pith:2015:HFJ42DSZDTVBU6L5GSCV6TOMJF

not attested not anchored not stored refs pending

Near horizon symmetry and entropy of black holes in $f(R)$ gravity and conformal gravity

Jun Li, Kun Meng, Liu Zhao

arxiv:1509.00152 v1 · 2015-09-01 · 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{HFJ42DSZDTVBU6L5GSCV6TOMJF}

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	2026-05-18T01:32:26.683756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3953cd0e591cea1a797d34855f4dcc4971c3a5a0f393df6b6c9ffd2d5d574f5b

Aliases

arxiv: 1509.00152 · arxiv_version: 1509.00152v1 · doi: 10.48550/arxiv.1509.00152 · pith_short_12: HFJ42DSZDTVB · pith_short_16: HFJ42DSZDTVBU6L5 · pith_short_8: HFJ42DSZ

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/HFJ42DSZDTVBU6L5GSCV6TOMJF \
  | 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: 3953cd0e591cea1a797d34855f4dcc4971c3a5a0f393df6b6c9ffd2d5d574f5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a36903d81edc784cb3584f3f3114ed7115e2bc39e11a65106a3c04a812cb3a45",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-09-01T06:13:04Z",
    "title_canon_sha256": "a51fc685234490d40a7439b2533c2bc86bf4863e12384a66e2e0fdd0a8a29a78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.00152",
    "kind": "arxiv",
    "version": 1
  }
}