Pith Number

pith:PC6V47D7

pith:2018:PC6V47D7CF6OXRUQSTY4H5V32B

not attested not anchored not stored refs pending

Shadow cast and Deflection angle of Kerr-Newman-Kasuya spacetime

Ali \"Ovg\"un, \.Izzet Sakall{\i}, Joel Saavedra

arxiv:1807.00388 v2 · 2018-07-01 · 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{PC6V47D7CF6OXRUQSTY4H5V32B}

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

Photon rings and shadows of black holes with non-minimal couplings between curvature and electromagnetic field

Receipt and verification

First computed	2026-05-18T00:02:44.614278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78bd5e7c7f117cebc69094f1c3f6bbd05cc6f9039f38faabaf5807c3d9d3aafd

Aliases

arxiv: 1807.00388 · arxiv_version: 1807.00388v2 · doi: 10.48550/arxiv.1807.00388 · pith_short_12: PC6V47D7CF6O · pith_short_16: PC6V47D7CF6OXRUQ · pith_short_8: PC6V47D7

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/PC6V47D7CF6OXRUQSTY4H5V32B \
  | 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: 78bd5e7c7f117cebc69094f1c3f6bbd05cc6f9039f38faabaf5807c3d9d3aafd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1cf34b1c72fb9c740fa1b8edcfe1717e5c2de4836b08b86841e82435b4d5fba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-07-01T20:23:58Z",
    "title_canon_sha256": "2505678325bdb119666728fff44dd3bcf8d2321f0c2fa76638fab61d3633ec1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00388",
    "kind": "arxiv",
    "version": 2
  }
}