Pith Number

pith:Y3TB4AVS

pith:2000:Y3TB4AVSFXFSEW6VOA7HC63LTW

not attested not anchored not stored refs pending

Fourier power spectra at high frequencies: a way to distinguish a neutron star from a black hole

1) ((1)-MPA, 2), Garching bei M\"unchen, Germany;(2)-Space Research Institute, Moscow, M.Revnivtsev (2, R.Sunyaev (1, Russia)

arxiv:astro-ph/0003308 v4 · 2000-03-21 · 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{Y3TB4AVSFXFSEW6VOA7HC63LTW}

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	2026-05-18T04:21:42.716151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030

Aliases

arxiv: astro-ph/0003308 · arxiv_version: astro-ph/0003308v4 · doi: 10.48550/arxiv.astro-ph/0003308 · pith_short_12: Y3TB4AVSFXFS · pith_short_16: Y3TB4AVSFXFSEW6V · pith_short_8: Y3TB4AVS

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/Y3TB4AVSFXFSEW6VOA7HC63LTW \
  | 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: c6e61e02b22dcb225bd5703e717b6b9dab79c77ab0fc054da0a4e199c1e1e030

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b4e013a097c0c200a14a092f45ea6bc9d12c9d4005ee1d286f4a11075edb2e6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-03-21T22:37:48Z",
    "title_canon_sha256": "dc730a878efcdd866f096c66f37c06f1d79aa8c79d2387d59e17425a9d343d87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0003308",
    "kind": "arxiv",
    "version": 4
  }
}