Pith Number

pith:BFT2RBM3

pith:2021:BFT2RBM3UAUZ4X4Y3MOJUQTP55

not attested not anchored not stored refs pending

Photon Spheres and Spherical Accretion Image of a Hairy Black Hole

Haitang Yang, Houwen Wu, Peng Wang, Qingyu Gan

arxiv:2104.08703 v2 · 2021-04-18 · 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{BFT2RBM3UAUZ4X4Y3MOJUQTP55}

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

3 papers in Pith

Optical Appearance of Scalarized Kerr-Newman Black Holes with Multiple Light Rings

Topologically equivalent yet radiatively distinct orbits in EMRI system

Scalarizations of magnetized Reissner-Nordstr\"om black holes induced by parity-violating and parity-preserving interactions

Receipt and verification

First computed	2026-07-05T02:55:45.867526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0967a8859ba0299e5f98db1c9a426fef5e3fcbbe03aa7748d2611f01625af231

Aliases

arxiv: 2104.08703 · arxiv_version: 2104.08703v2 · doi: 10.48550/arxiv.2104.08703 · pith_short_12: BFT2RBM3UAUZ · pith_short_16: BFT2RBM3UAUZ4X4Y · pith_short_8: BFT2RBM3

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/BFT2RBM3UAUZ4X4Y3MOJUQTP55 \
  | 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: 0967a8859ba0299e5f98db1c9a426fef5e3fcbbe03aa7748d2611f01625af231

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e8b3d9e1e676d70ba8e94f486c07aadc127a53181ed7d2e23d2226e91adefca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-04-18T04:02:16Z",
    "title_canon_sha256": "6293dfb165938cbf54eeb95899ddfae31c75914e2817c7a990ce840dbeec0149"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.08703",
    "kind": "arxiv",
    "version": 2
  }
}