Pith Number

pith:HOZB43UA

pith:2009:HOZB43UARSXDJBMPD3ZBGUATRV

not attested not anchored not stored refs pending

Fossil Gas and the Electromagnetic Precursor of Supermassive Binary Black Hole Mergers

E. Quataert, K. Menou, L.E. Strubbe, P. Chang

arxiv:0906.0825 v1 · 2009-06-04 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HOZB43UARSXDJBMPD3ZBGUATRV}

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	2026-05-18T02:13:29.190765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bb21e6e808cae34858f1ef21350138d5b8064a657a8507cc5d56c8ba5b4fc90

Aliases

arxiv: 0906.0825 · arxiv_version: 0906.0825v1 · doi: 10.48550/arxiv.0906.0825 · pith_short_12: HOZB43UARSXD · pith_short_16: HOZB43UARSXDJBMP · pith_short_8: HOZB43UA

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/HOZB43UARSXDJBMPD3ZBGUATRV \
  | 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: 3bb21e6e808cae34858f1ef21350138d5b8064a657a8507cc5d56c8ba5b4fc90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fd755ed98ecd42701bc213f36fcc7942c201cb2d388e34a454bb2eb70d04168",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-06-04T03:49:04Z",
    "title_canon_sha256": "39dfc4d40360673ba1cc6c21fac9fe85c8d9da7135a7af4e4432f4bf68af6fd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0825",
    "kind": "arxiv",
    "version": 1
  }
}