Pith Number

pith:QKGZP3FG

pith:2000:QKGZP3FGZ7ZD2WN5OOYILEVIIV

not attested not anchored not stored refs pending

Close limit of grazing black hole collisions: non-spinning holes

Gaurav Khanna, Jorge Pullin, Reinaldo Gleiser, Richard Price

arxiv:gr-qc/0003003 v1 · 2000-03-02 · gr-qc · 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{QKGZP3FGZ7ZD2WN5OOYILEVIIV}

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	2026-05-18T04:17:53.260536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

828d97eca6cff23d59bd73b08592a8455df47f2c5127123d6ac2d7c606b98828

Aliases

arxiv: gr-qc/0003003 · arxiv_version: gr-qc/0003003v1 · doi: 10.48550/arxiv.gr-qc/0003003 · pith_short_12: QKGZP3FGZ7ZD · pith_short_16: QKGZP3FGZ7ZD2WN5 · pith_short_8: QKGZP3FG

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/QKGZP3FGZ7ZD2WN5OOYILEVIIV \
  | 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: 828d97eca6cff23d59bd73b08592a8455df47f2c5127123d6ac2d7c606b98828

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a28ae5d97dd9094c03b30119e8ca264c8f4b617ad888bf751ce7181241888139",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2000-03-02T02:52:26Z",
    "title_canon_sha256": "6cf76116ca50eab3b128c59be6c8cf38a255391327ebd629a124cb10ed3c06c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0003003",
    "kind": "arxiv",
    "version": 1
  }
}