Pith Number

pith:GQVDUEHI

pith:2021:GQVDUEHILN3UPLVONSSG22JUGD

not attested not anchored not stored refs pending

Scalar/Dirac perturbations of the Reissner-Nordstr\"om black hole and Painlev\'e transcendents

Bruno Carneiro da Cunha, Jo\~ao Paulo Cavalcante

arxiv:2109.06929 v2 · 2021-09-14 · 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{GQVDUEHILN3UPLVONSSG22JUGD}

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	2026-07-05T04:26:33.840994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

342a3a10e85b7747aeae6ca46d693430f12970d8084ff785e125a3cebd357ae9

Aliases

arxiv: 2109.06929 · arxiv_version: 2109.06929v2 · doi: 10.48550/arxiv.2109.06929 · pith_short_12: GQVDUEHILN3U · pith_short_16: GQVDUEHILN3UPLVO · pith_short_8: GQVDUEHI

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/GQVDUEHILN3UPLVONSSG22JUGD \
  | 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: 342a3a10e85b7747aeae6ca46d693430f12970d8084ff785e125a3cebd357ae9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53a5dae24da8f65378cdc47c6300fb255f7483323a47a6558d9e0771ff49fae9",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-09-14T19:00:11Z",
    "title_canon_sha256": "054e07cfd3cee073964b4471ae53938aa671430f5872775368e6a6b9fdac5219"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.06929",
    "kind": "arxiv",
    "version": 2
  }
}