Pith Number

pith:QHS5F6HU

pith:2002:QHS5F6HUHDW57E5QRXSZXPK6DY

not attested not anchored not stored refs pending

Relativistic Effects on the Appearance of a Clothed Black Hole

S.Nan Zhang, Xiaoling Zhang, Yangsen Yao, Yuxin Feng

arxiv:astro-ph/0212055 v1 · 2002-12-03 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHS5F6HUHDW57E5QRXSZXPK6DY}

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.

Receipt and verification

First computed	2026-05-18T01:21:50.313937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81e5d2f8f438eddf93b08de59bbd5e1e363b5cb6aaa2e7d4277005bf4ac6c67b

Aliases

arxiv: astro-ph/0212055 · arxiv_version: astro-ph/0212055v1 · doi: 10.48550/arxiv.astro-ph/0212055 · pith_short_12: QHS5F6HUHDW5 · pith_short_16: QHS5F6HUHDW57E5Q · pith_short_8: QHS5F6HU

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/QHS5F6HUHDW57E5QRXSZXPK6DY \
  | 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: 81e5d2f8f438eddf93b08de59bbd5e1e363b5cb6aaa2e7d4277005bf4ac6c67b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0559b518deef1a16930a316d78ceaa7696a853fdeea66bb455262e1dfa8d034b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-03T04:18:52Z",
    "title_canon_sha256": "24fab043e6f390a321bf945f4c9ae886046c87049ef7989ddc7fe07417eda786"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212055",
    "kind": "arxiv",
    "version": 1
  }
}