Pith Number

pith:SWC4BPPE

pith:2019:SWC4BPPEZO27OCAZHYXVMIC5KR

not attested not anchored not stored refs pending

Optical analogues to the Kerr-Newman black hole

Andrew P. Turner, R. A. Tinguely

arxiv:1909.05256 v2 · 2019-09-11 · gr-qc · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SWC4BPPEZO27OCAZHYXVMIC5KR}

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	2026-07-05T01:23:22.255170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9585c0bde4cbb5f708193e2f56205d5468b1534d2c208cc76acd1d10a1e46c2c

Aliases

arxiv: 1909.05256 · arxiv_version: 1909.05256v2 · doi: 10.48550/arxiv.1909.05256 · pith_short_12: SWC4BPPEZO27 · pith_short_16: SWC4BPPEZO27OCAZ · pith_short_8: SWC4BPPE

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/SWC4BPPEZO27OCAZHYXVMIC5KR \
  | 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: 9585c0bde4cbb5f708193e2f56205d5468b1534d2c208cc76acd1d10a1e46c2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f11931e8d03a4c2824431b7a21bc3848a99c44fdc19d973de7c14588e5b36c0e",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-09-11T18:00:00Z",
    "title_canon_sha256": "b06d0c7e82e0935b794bf6acd0d8f71e513e7a5f4cce14d4af92d705f0a1a648"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.05256",
    "kind": "arxiv",
    "version": 2
  }
}