Pith Number

pith:4DUC3STD

pith:2020:4DUC3STD76VW4FT4KFVJ4STFBY

not attested not anchored not stored refs pending

Gravitational lensing by charged black hole in regularized $4D$ Einstein-Gauss-Bonnet gravity

Rahul Kumar, Shafqat Ul Islam, Sushant G. Ghosh

arxiv:2004.12970 v2 · 2020-04-27 · 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{4DUC3STD76VW4FT4KFVJ4STFBY}

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.

Cited by

1 paper in Pith

Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A$^*$

Receipt and verification

First computed	2026-07-05T02:02:20.468842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0e82dca63ffab6e167c516a9e4a650e0d619c001f62bb117a8285e9310b0e26

Aliases

arxiv: 2004.12970 · arxiv_version: 2004.12970v2 · doi: 10.48550/arxiv.2004.12970 · pith_short_12: 4DUC3STD76VW · pith_short_16: 4DUC3STD76VW4FT4 · pith_short_8: 4DUC3STD

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/4DUC3STD76VW4FT4KFVJ4STFBY \
  | 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: e0e82dca63ffab6e167c516a9e4a650e0d619c001f62bb117a8285e9310b0e26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbd01b88ceb227d91b07aec6f9de5accfc74a2a37ee57a8ddeb61fbc726d1987",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-04-27T17:24:24Z",
    "title_canon_sha256": "0297bd0c121cfbf4e4f9b64d998eed1af5ac4ab146a389cd4a036807e6cd408e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.12970",
    "kind": "arxiv",
    "version": 2
  }
}