Pith Number

pith:OK6J7YIR

pith:2025:OK6J7YIRF67SDL3Q7SDETWU2EG

not attested not anchored not stored refs pending

Barotropic Equation of State and Nonlinear Electrodynamics in Dynamical Black Hole Spacetimes

Dmitriy Kudryavtcev, Vitalii Vertogradov

arxiv:2504.20882 v1 · 2025-04-29 · 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{OK6J7YIRF67SDL3Q7SDETWU2EG}

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	2026-07-05T10:55:50.387759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72bc9fe1112fbf21af70fc8649da9a21bda9a25cf0575baaa6c23b6ef7ac95ef

Aliases

arxiv: 2504.20882 · arxiv_version: 2504.20882v1 · doi: 10.48550/arxiv.2504.20882 · pith_short_12: OK6J7YIRF67S · pith_short_16: OK6J7YIRF67SDL3Q · pith_short_8: OK6J7YIR

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/OK6J7YIRF67SDL3Q7SDETWU2EG \
  | 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: 72bc9fe1112fbf21af70fc8649da9a21bda9a25cf0575baaa6c23b6ef7ac95ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5229f6fa14aaa2f63632ed22653fd52357b97d1910a56470ebc4dd3d0638e70",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-04-29T15:53:44Z",
    "title_canon_sha256": "097d521b796b6d421c44648fef3d467319d9e0967b910a002bc5f1e8f7c649b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.20882",
    "kind": "arxiv",
    "version": 1
  }
}