Pith Number

pith:7CQWV22F

pith:2002:7CQWV22F5B7SQJITKVD2CRGUFG

not attested not anchored not stored refs pending

Vacuum Kerr-Schild metrics generated by nontwisting congruences

L\'aszl\'o \'A. Gergely, Zolt\'an Perj\'es

arxiv:gr-qc/0203091 v1 · 2002-03-26 · 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{7CQWV22F5B7SQJITKVD2CRGUFG}

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	2026-05-18T01:39:23.765246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8a16aeb45e87f2825135547a144d4299b174927e4fdde1cd10f75ec08cf877f

Aliases

arxiv: gr-qc/0203091 · arxiv_version: gr-qc/0203091v1 · doi: 10.48550/arxiv.gr-qc/0203091 · pith_short_12: 7CQWV22F5B7S · pith_short_16: 7CQWV22F5B7SQJIT · pith_short_8: 7CQWV22F

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/7CQWV22F5B7SQJITKVD2CRGUFG \
  | 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: f8a16aeb45e87f2825135547a144d4299b174927e4fdde1cd10f75ec08cf877f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1223599a2a3ff0e95cfe5775757ac1123255eaf3f40a303fa66cf5c6d363d47",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2002-03-26T12:39:23Z",
    "title_canon_sha256": "159786e6c5dcce93afba1a5fbf12802b385dd8bab0616707954e5f7d918c6a3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0203091",
    "kind": "arxiv",
    "version": 1
  }
}