Pith Number

pith:56YX4HYX

pith:2023:56YX4HYXPLT6CAEKRZSFJLI7MI

not attested not anchored not stored refs pending

How different are shadows of compact objects with and without horizons?

Minyong Guo, Xiangyu Wang, Yehui Hou

arxiv:2301.04851 v2 · 2023-01-12 · 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{56YX4HYXPLT6CAEKRZSFJLI7MI}

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

Reshaping the inner shadow of a Kerr black hole by a torn accretion disk

Receipt and verification

First computed	2026-07-05T06:12:42.177446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efb17e1f177ae7e1008a8e6454ad1f62216715e9dbb2713b97b80a49ee079109

Aliases

arxiv: 2301.04851 · arxiv_version: 2301.04851v2 · doi: 10.48550/arxiv.2301.04851 · pith_short_12: 56YX4HYXPLT6 · pith_short_16: 56YX4HYXPLT6CAEK · pith_short_8: 56YX4HYX

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/56YX4HYXPLT6CAEKRZSFJLI7MI \
  | 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: efb17e1f177ae7e1008a8e6454ad1f62216715e9dbb2713b97b80a49ee079109

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a717375aebab183eff985ed1d3188d30a98985054af3435fe2cc1ecf0798142",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2023-01-12T07:31:46Z",
    "title_canon_sha256": "fda3ac13b1a899f821c708c79d7e43a5083e7110d2a7d0b6b91746a0391b012a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.04851",
    "kind": "arxiv",
    "version": 2
  }
}