Pith Number

pith:4KOOJUCN

pith:1999:4KOOJUCNTHH76SVS4YYE247DTB

not attested not anchored not stored refs pending

Extinction and polarization of radiation by absorbing spheroids: shape/size effects and benchmark results

(2) Astrophysical Institute, (3) St. Petersburg University of Aerocosmic Instrumentation), B. Michel (2), Fr. Schiller University, Jena, N.V. Voshchinnikov (1), St. Petersburg University, Th. Henning (2), V.B. Il'in (1), V.G. Farafonov (3) ((1) Sobolev Astronomical Institute

arxiv:astro-ph/9908241 v1 · 1999-08-21 · 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{4KOOJUCNTHH76SVS4YYE247DTB}

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	2026-05-18T01:07:36.134035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e29ce4d04d99cfff4ab2e6304d73e398772e4de5b921d9270acc55bcdddcbe02

Aliases

arxiv: astro-ph/9908241 · arxiv_version: astro-ph/9908241v1 · doi: 10.48550/arxiv.astro-ph/9908241 · pith_short_12: 4KOOJUCNTHH7 · pith_short_16: 4KOOJUCNTHH76SVS · pith_short_8: 4KOOJUCN

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/4KOOJUCNTHH76SVS4YYE247DTB \
  | 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: e29ce4d04d99cfff4ab2e6304d73e398772e4de5b921d9270acc55bcdddcbe02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2def275bb5f8441213b655829b6471248f42f5b8bf178d2e9d3c305f06d4dec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-08-21T13:07:01Z",
    "title_canon_sha256": "9675eb709cfe3feb9107954cf68ff2dc6f7d57e43334eb30de3f21f546e1800a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9908241",
    "kind": "arxiv",
    "version": 1
  }
}