Pith Number

pith:WMY7CVUF

pith:2018:WMY7CVUF47NMUBZ62NYV5UFEM5

not attested not anchored not stored refs pending

Physical objects approaching the Cauchy horizon of a rapidly rotating Kerr black hole

Caroline Mallary, Gaurav Khanna, Lior M. Burko

arxiv:1807.06509 v2 · 2018-07-17 · 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{WMY7CVUF47NMUBZ62NYV5UFEM5}

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	2026-05-17T23:58:52.612768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b331f15685e7daca073ed3715ed0a467778d6f1d624f0dc4e901f4bbc4b35a5f

Aliases

arxiv: 1807.06509 · arxiv_version: 1807.06509v2 · doi: 10.48550/arxiv.1807.06509 · pith_short_12: WMY7CVUF47NM · pith_short_16: WMY7CVUF47NMUBZ6 · pith_short_8: WMY7CVUF

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/WMY7CVUF47NMUBZ62NYV5UFEM5 \
  | 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: b331f15685e7daca073ed3715ed0a467778d6f1d624f0dc4e901f4bbc4b35a5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aec9608aaf30dfeb9c9ddb1fdc8d5743872528dcffc5dc7438fe2edc12d1f3ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-07-17T15:46:37Z",
    "title_canon_sha256": "2c640ef0e879a475a7e249a571b0a63ab2650e27fdfe45924853cb28e7405bf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06509",
    "kind": "arxiv",
    "version": 2
  }
}