Pith Number

pith:WQ4F6IGA

pith:2018:WQ4F6IGACVZXWBGMISECY3RF65

not attested not anchored not stored refs pending

Black hole binaries: ergoregions, photon surfaces, wave scattering, and quasinormal modes

Akihiro Ishibashi, Mauricio Richartz, Miguel Zilhao, Thiago Assumpcao, Vitor Cardoso

arxiv:1806.07909 v3 · 2018-06-20 · gr-qc · astro-ph.HE · hep-th · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQ4F6IGACVZXWBGMISECY3RF65}

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

The third wheel: ringdown and lensing of triple systems

Receipt and verification

First computed	2026-05-18T00:04:48.604999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4385f20c015737b04cc44882c6e25f740d0dcda55a45318e57740778c31d368

Aliases

arxiv: 1806.07909 · arxiv_version: 1806.07909v3 · doi: 10.48550/arxiv.1806.07909 · pith_short_12: WQ4F6IGACVZX · pith_short_16: WQ4F6IGACVZXWBGM · pith_short_8: WQ4F6IGA

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/WQ4F6IGACVZXWBGMISECY3RF65 \
  | 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: b4385f20c015737b04cc44882c6e25f740d0dcda55a45318e57740778c31d368

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41a9eb0fa912448d629d4bd62250e8caf1ff937d2b3eb03d4d637810d1cfa6ec",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th",
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-06-20T18:07:40Z",
    "title_canon_sha256": "40f689e13e6e8c51c62494c3ef1cee58f9e5b70cf630cdc5ffe92075fe3e6735"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07909",
    "kind": "arxiv",
    "version": 3
  }
}