Pith Number

pith:ZNNBXDJ4

pith:1994:ZNNBXDJ4MNLHAOQN2PAHJM3WBO

not attested not anchored not stored refs pending

Reverberation by a Relativistic Accretion Disk

20121 Milano, Italy), Luigi Stella (Osservatorio Astronomico di Brera, Sergio Campana, Via Brera 28

arxiv:astro-ph/9409049 v1 · 1994-09-19 · 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{ZNNBXDJ4MNLHAOQN2PAHJM3WBO}

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	2026-05-18T01:40:24.290514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb5a1b8d3c6356703a0dd3c074b3760b8007984a5525333b4233fcce4a3a3a50

Aliases

arxiv: astro-ph/9409049 · arxiv_version: astro-ph/9409049v1 · doi: 10.48550/arxiv.astro-ph/9409049 · pith_short_12: ZNNBXDJ4MNLH · pith_short_16: ZNNBXDJ4MNLHAOQN · pith_short_8: ZNNBXDJ4

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/ZNNBXDJ4MNLHAOQN2PAHJM3WBO \
  | 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: cb5a1b8d3c6356703a0dd3c074b3760b8007984a5525333b4233fcce4a3a3a50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae5d43fb7c440b453c907c8ca2434f5c9933d869a0a49125506779eb0a53618d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-09-19T18:47:00Z",
    "title_canon_sha256": "7ae773257f9e28191c35dc04d99b31d88ac53eea10475aa49ea0348ac51059df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9409049",
    "kind": "arxiv",
    "version": 1
  }
}