Pith Number

pith:BA4MAENV

pith:2003:BA4MAENV36VEOR326E73K3V5RT

not attested not anchored not stored refs pending

Spin orientation of supermassive black holes in active galaxies

W. Kollatschny

arxiv:astro-ph/0311283 v1 · 2003-11-12 · 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{BA4MAENV36VEOR326E73K3V5RT}

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	2026-05-18T04:21:41.394755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0838c011b5dfaa47477af13fb56ebd8cc3ab88f49f931d97f1bce3b1ab002933

Aliases

arxiv: astro-ph/0311283 · arxiv_version: astro-ph/0311283v1 · doi: 10.48550/arxiv.astro-ph/0311283 · pith_short_12: BA4MAENV36VE · pith_short_16: BA4MAENV36VEOR32 · pith_short_8: BA4MAENV

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/BA4MAENV36VEOR326E73K3V5RT \
  | 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: 0838c011b5dfaa47477af13fb56ebd8cc3ab88f49f931d97f1bce3b1ab002933

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "405ab566c9d4466a38a8e59aeadb457e555524ab89aadfb1d858beeb4db1edfc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-11-12T15:54:06Z",
    "title_canon_sha256": "d22c607d297c8278df86db6384f8693f37d4b9b886dd9581ed84531d1fa86e6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0311283",
    "kind": "arxiv",
    "version": 1
  }
}