Pith Number

pith:UYBW5JND

pith:2021:UYBW5JNDYO3VVGXSK63GQQMZHO

not attested not anchored not stored refs pending

Can different black holes cast the same shadow?

Carlos A. R. Herdeiro, Haroldo C. D. Lima Junior, Lu\'is C. B. Crispino, Pedro V. P. Cunha

arxiv:2102.07034 v2 · 2021-02-13 · gr-qc · astro-ph.HE · 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{UYBW5JNDYO3VVGXSK63GQQMZHO}

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

Roche limit and stellar disruption in the Simpson--Visser spacetime

Twisted doughnuts: Thick disk torus around equatorial asymmetric black hole

Receipt and verification

First computed	2026-07-05T02:35:02.355373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6036ea5a3c3b75a9af257b66841993baaa470a39f211d2dfe91d3af1d2efd4e

Aliases

arxiv: 2102.07034 · arxiv_version: 2102.07034v2 · doi: 10.48550/arxiv.2102.07034 · pith_short_12: UYBW5JNDYO3V · pith_short_16: UYBW5JNDYO3VVGXS · pith_short_8: UYBW5JND

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/UYBW5JNDYO3VVGXSK63GQQMZHO \
  | 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: a6036ea5a3c3b75a9af257b66841993baaa470a39f211d2dfe91d3af1d2efd4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc95706e52278ad29fb3e9d1cc3184f94aef51b1ade5623b2f5f72878e7928b7",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-02-13T23:56:55Z",
    "title_canon_sha256": "05a87d0420348c46a4e7ab0c4d7e0310dfcc00c69ea71884ab37b5aceda4535f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07034",
    "kind": "arxiv",
    "version": 2
  }
}