Pith Number

pith:X4LHD3VL

pith:2022:X4LHD3VLSZIS4SPT7ADZSZ5VQH

not attested not anchored not stored refs pending

Testing Gravity with Black Hole Shadow Subrings

Dimitry Ayzenberg

arxiv:2202.02355 v1 · 2022-02-04 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X4LHD3VLSZIS4SPT7ADZSZ5VQH}

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

Probing Kalb-Ramond gravity with charged rotating black holes: constraints from EHT observations

Receipt and verification

First computed	2026-07-05T04:25:54.650506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf1671eeab96512e49f3f8079967b581f3632488e7cc087592a6d1dae5a516de

Aliases

arxiv: 2202.02355 · arxiv_version: 2202.02355v1 · doi: 10.48550/arxiv.2202.02355 · pith_short_12: X4LHD3VLSZIS · pith_short_16: X4LHD3VLSZIS4SPT · pith_short_8: X4LHD3VL

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/X4LHD3VLSZIS4SPT7ADZSZ5VQH \
  | 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: bf1671eeab96512e49f3f8079967b581f3632488e7cc087592a6d1dae5a516de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26fc80391bbff517c514140ef9aa899d38c434f873512ddb68ced44ac4904a32",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2022-02-04T19:27:58Z",
    "title_canon_sha256": "776bc0174f2f9433c3c096a45cd16cbace772023b835011494207c914989cf30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.02355",
    "kind": "arxiv",
    "version": 1
  }
}