Pith Number

pith:3YO45CY3

pith:2022:3YO45CY3D3GTXSHKVYHKKENJHI

not attested not anchored not stored refs pending

Black Hole Shadow with Soft Hair

Avani Patel, Feng-Li Lin, Hung-Yi Pu

arxiv:2202.13559 v2 · 2022-02-28 · 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{3YO45CY3D3GTXSHKVYHKKENJHI}

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

Shaving off soft hairs and the black hole image memory effect

Receipt and verification

First computed	2026-07-05T05:01:20.192617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de1dce8b1b1ecd3bc8eaae0ea511a93a211b8ad57fe15ab0ba0733db1a1d719c

Aliases

arxiv: 2202.13559 · arxiv_version: 2202.13559v2 · doi: 10.48550/arxiv.2202.13559 · pith_short_12: 3YO45CY3D3GT · pith_short_16: 3YO45CY3D3GTXSHK · pith_short_8: 3YO45CY3

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/3YO45CY3D3GTXSHKVYHKKENJHI \
  | 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: de1dce8b1b1ecd3bc8eaae0ea511a93a211b8ad57fe15ab0ba0733db1a1d719c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ea5ac9ebf975aa31f457904f00ba0ca5622617999204a1ba17b40537ac97cc2",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2022-02-28T06:03:17Z",
    "title_canon_sha256": "0effead43cbb43bf0026d513a7bfcfd2e2daa629c90c8c9d7b4c9782b24a50e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13559",
    "kind": "arxiv",
    "version": 2
  }
}