Pith Number

pith:XQ7S2XKC

pith:2015:XQ7S2XKC2XMB7ZS6EYTTH35FBK

not attested not anchored not stored refs pending

An Exploration of the Black Hole Entropy via the Weyl Tensor

Nan Li, Shu-Peng Song, Xiao-Long Li

arxiv:1510.09027 v1 · 2015-10-30 · 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{XQ7S2XKC2XMB7ZS6EYTTH35FBK}

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	2026-05-18T01:18:41.985107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc3f2d5d42d5d81fe65e262733efa50ab904567c402bb27b71120d5dcb2812c9

Aliases

arxiv: 1510.09027 · arxiv_version: 1510.09027v1 · doi: 10.48550/arxiv.1510.09027 · pith_short_12: XQ7S2XKC2XMB · pith_short_16: XQ7S2XKC2XMB7ZS6 · pith_short_8: XQ7S2XKC

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/XQ7S2XKC2XMB7ZS6EYTTH35FBK \
  | 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: bc3f2d5d42d5d81fe65e262733efa50ab904567c402bb27b71120d5dcb2812c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "183f695e34a687f91de53b37149e646f8f550a6dd24269debf3e1bce595cf112",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-10-30T09:51:48Z",
    "title_canon_sha256": "dfcdfe18fd0259dd6c02f1ab720ff2397d3d521dbf43ded994f28488dd6d2f31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.09027",
    "kind": "arxiv",
    "version": 1
  }
}