Pith Number

pith:IZL47JW4

pith:2009:IZL47JW4YLBUTGG4FAJVVCQOOK

not attested not anchored not stored refs pending

Predicting the direction of the final spin from the coalescence of two black holes

Enrico Barausse (UMD), Luciano Rezzolla (AEI)

arxiv:0904.2577 v2 · 2009-04-16 · gr-qc · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZL47JW4YLBUTGG4FAJVVCQOOK}

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

3 papers in Pith

Cusp Formation in Merging Black Hole Horizons

Surrogate models for precessing binary black hole simulations with unequal masses

Cusp Formation in Merging Black Hole Horizons

Receipt and verification

First computed	2026-05-18T04:21:30.187698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4657cfa6dcc2c34998dc28135a8a0e729319b24d010e64e4faf0a9766b6e3e9e

Aliases

arxiv: 0904.2577 · arxiv_version: 0904.2577v2 · doi: 10.48550/arxiv.0904.2577 · pith_short_12: IZL47JW4YLBU · pith_short_16: IZL47JW4YLBUTGG4 · pith_short_8: IZL47JW4

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/IZL47JW4YLBUTGG4FAJVVCQOOK \
  | 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: 4657cfa6dcc2c34998dc28135a8a0e729319b24d010e64e4faf0a9766b6e3e9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2df0a281fa38c0cf5312c1e7ec51ee5350aeb5a99d23c983040d208c80f546c1",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-04-16T22:16:20Z",
    "title_canon_sha256": "d5eda881758d021003df5e32c3f0d58408abadf350a53e05e8dfef9d1733603f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2577",
    "kind": "arxiv",
    "version": 2
  }
}