Pith Number

pith:GX5PICOE

pith:2014:GX5PICOEKBDZNYBMXEFSEAEYBO

not attested not anchored not stored refs pending

Entropy of isolated horizon from surface term of gravitational action

Cheng-Yong Zhang, Shao-Jun Zhang, Xiao-Ning Wu, Yu Tian

arxiv:1403.7352 v1 · 2014-03-28 · 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{GX5PICOEKBDZNYBMXEFSEAEYBO}

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	2026-05-18T01:43:44.369990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35faf409c4504796e02cb90b2200980bbf4513cc8a9c277857b459ea4d30cf29

Aliases

arxiv: 1403.7352 · arxiv_version: 1403.7352v1 · doi: 10.48550/arxiv.1403.7352 · pith_short_12: GX5PICOEKBDZ · pith_short_16: GX5PICOEKBDZNYBM · pith_short_8: GX5PICOE

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/GX5PICOEKBDZNYBMXEFSEAEYBO \
  | 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: 35faf409c4504796e02cb90b2200980bbf4513cc8a9c277857b459ea4d30cf29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f8a3f675e010588c56b4ae1dcd7bdea8561e70d95a64f574b922d72b5b820c9",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-03-28T12:07:28Z",
    "title_canon_sha256": "a425d195549ebbef61816ab6905b10ad747ca04fd7bbca31a78b140f49d96ac4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7352",
    "kind": "arxiv",
    "version": 1
  }
}