Pith Number

pith:FUDLBMNI

pith:2018:FUDLBMNIG4QWL6TYUQB6IB7SJO

not attested not anchored not stored refs pending

Entropy of Vaidya Black Hole on Apparent Horizon with Minimal length Revisited

Bin Wu, Cheng-Yi Sun, Hao Tang, Rui-Hong Yue, Yu Song

arxiv:1804.05531 v1 · 2018-04-16 · 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{FUDLBMNIG4QWL6TYUQB6IB7SJO}

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	2026-05-18T00:18:27.926835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d06b0b1a8372165fa78a403e407f24ba09e146438b091aec877b98351e144a1

Aliases

arxiv: 1804.05531 · arxiv_version: 1804.05531v1 · doi: 10.48550/arxiv.1804.05531 · pith_short_12: FUDLBMNIG4QW · pith_short_16: FUDLBMNIG4QWL6TY · pith_short_8: FUDLBMNI

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/FUDLBMNIG4QWL6TYUQB6IB7SJO \
  | 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: 2d06b0b1a8372165fa78a403e407f24ba09e146438b091aec877b98351e144a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c989b83f49a7a49de5a9c6fa9d5c21d27a148cbb4725f4637fd9e52e48e99f76",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-04-16T07:46:47Z",
    "title_canon_sha256": "fd76f16cab10d8ffc2406fdbf407204639a1ab19d446f719bddb807244604d2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05531",
    "kind": "arxiv",
    "version": 1
  }
}