Pith Number

pith:4BTW3C7V

pith:2004:4BTW3C7VNISZR5JPNTRPLDG5IF

not attested not anchored not stored refs pending

Of NBOs and kHz QPOs: a low-frequency modulation in resonant oscillations of relativistic accretion disks

J. Horak, M. Abramowicz, V. Karas, W. Kluzniak

arxiv:astro-ph/0408090 v1 · 2004-08-04 · 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{4BTW3C7VNISZR5JPNTRPLDG5IF}

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	2026-05-18T01:40:35.172014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0676d8bf56a2598f52f6ce2f58cdd417aad861788d04a8d48e61206c9100b2c

Aliases

arxiv: astro-ph/0408090 · arxiv_version: astro-ph/0408090v1 · doi: 10.48550/arxiv.astro-ph/0408090 · pith_short_12: 4BTW3C7VNISZ · pith_short_16: 4BTW3C7VNISZR5JP · pith_short_8: 4BTW3C7V

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/4BTW3C7VNISZR5JPNTRPLDG5IF \
  | 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: e0676d8bf56a2598f52f6ce2f58cdd417aad861788d04a8d48e61206c9100b2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be671c9906b71eef20f72b682d5b4ceebe74015b6b5df5fcce5df6e3343af85f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-04T17:30:10Z",
    "title_canon_sha256": "2e5207498e6e8a4f4831b1ab6b70f240ea4c90df9538910d33dab2dac74f55a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408090",
    "kind": "arxiv",
    "version": 1
  }
}