Pith Number

pith:PJHNDM3J

pith:2002:PJHNDM3JWJENAY2GHVIGTBOAUM

not attested not anchored not stored refs pending

Black hole mass and spin coevolution by mergers

Roger D. Blandford, Scott A. Hughes

arxiv:astro-ph/0208484 v2 · 2002-08-27 · astro-ph · 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{PJHNDM3JWJENAY2GHVIGTBOAUM}

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

Gravity Echoes from Supermassive Black Hole Binaries

Receipt and verification

First computed	2026-07-04T16:30:41.609324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a4ed1b369b248d063463d506985c0a31b43a1faa0a37b858ccd90fab51aaeff

Aliases

arxiv: astro-ph/0208484 · arxiv_version: astro-ph/0208484v2 · doi: 10.48550/arxiv.astro-ph/0208484 · pith_short_12: PJHNDM3JWJEN · pith_short_16: PJHNDM3JWJENAY2G · pith_short_8: PJHNDM3J

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/PJHNDM3JWJENAY2GHVIGTBOAUM \
  | 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: 7a4ed1b369b248d063463d506985c0a31b43a1faa0a37b858ccd90fab51aaeff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f33ccc7a003f43e530ced38caa80bd95b7b0c8ccc7c7e85e7331091653ab5180",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-27T20:12:12Z",
    "title_canon_sha256": "143250867ae22273b5ca19843386809e0fa5ee63acbf870a75e8a888f0ffb85a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208484",
    "kind": "arxiv",
    "version": 2
  }
}