Pith Number

pith:5ZE5F2LR

pith:2021:5ZE5F2LR2DNFPGWHC2OVYZZKRT

not attested not anchored not stored refs pending

Polish Doughnuts around Scalarized Kerr Black Holes

Daniela Doneva, Jutta Kunz, Lucas G. Collodel, Matheus C. Teodoro, Petya Nedkova, Stoytcho Yazadjiev

arxiv:2108.08640 v1 · 2021-08-19 · 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{5ZE5F2LR2DNFPGWHC2OVYZZKRT}

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

2 papers in Pith

Topological charge and black hole photon spheres in massive gravity

Twisted doughnuts: Thick disk torus around equatorial asymmetric black hole

Receipt and verification

First computed	2026-07-05T03:07:12.043454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee49d2e971d0da579ac7169d5c672a8cc0297ae28480090a2f62c6e424f3b4a0

Aliases

arxiv: 2108.08640 · arxiv_version: 2108.08640v1 · doi: 10.48550/arxiv.2108.08640 · pith_short_12: 5ZE5F2LR2DNF · pith_short_16: 5ZE5F2LR2DNFPGWH · pith_short_8: 5ZE5F2LR

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/5ZE5F2LR2DNFPGWHC2OVYZZKRT \
  | 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: ee49d2e971d0da579ac7169d5c672a8cc0297ae28480090a2f62c6e424f3b4a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c09c5f74ff2cb74baa44862cc613a7adc9156b1b236af6bb6752e59c21ecc99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-08-19T12:05:54Z",
    "title_canon_sha256": "93ecda8d330dcc658e8f83485822ddd6b60a165a72bdb8f304b8e12a57ca1f2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.08640",
    "kind": "arxiv",
    "version": 1
  }
}