Pith Number

pith:75MMA72I

pith:2007:75MMA72IDEOO3B4DQFTZ2WRGCR

not attested not anchored not stored refs pending

Recoiling from a kick in the head-on collision of spinning black holes

Bernard J. Kelly, Dae-Il Choi, James van Meter, Joan Centrella, John G. Baker, William D. Boggs

arxiv:gr-qc/0702016 v2 · 2007-02-02 · 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{75MMA72IDEOO3B4DQFTZ2WRGCR}

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

Recoil kicks from binary black hole mergers in GWTC catalogs: implications for retention and hierarchical mergers

Receipt and verification

First computed	2026-07-04T15:22:00.444639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff58c07f48191ced878381679d5a26146020dd3fc8cf9b37d0c31ebd7a16e3be

Aliases

arxiv: gr-qc/0702016 · arxiv_version: gr-qc/0702016v2 · doi: 10.48550/arxiv.gr-qc/0702016 · pith_short_12: 75MMA72IDEOO · pith_short_16: 75MMA72IDEOO3B4D · pith_short_8: 75MMA72I

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/75MMA72IDEOO3B4DQFTZ2WRGCR \
  | 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: ff58c07f48191ced878381679d5a26146020dd3fc8cf9b37d0c31ebd7a16e3be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "531cc786cd44fbbc140755df39ab4df17133c701e64093bc9824b0d9f693a1e1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-02-02T20:55:18Z",
    "title_canon_sha256": "9696832f6e1ab4fe5507c4ef88e7cf80a5fb93bb58b216a53f0ff2255d9fcd03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0702016",
    "kind": "arxiv",
    "version": 2
  }
}