Pith Number

pith:55PLAOP2

pith:2007:55PLAOP24WU7GACK4C7LDB6ANP

not attested not anchored not stored refs pending

Circular polarization in comets: Observations of Comet C/1999 S4 (LINEAR) and tentative interpretation

Alexander Lazarian, Ludmilla Kolokolova, Nikolai Kiselev, Nikolai Shakhovskoyd, Vera Rosenbush

arxiv:astro-ph/0703221 v1 · 2007-03-09 · 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{55PLAOP24WU7GACK4C7LDB6ANP}

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	2026-05-18T04:38:38.537752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef5eb039fae5a9f3004ae0beb187c06be5947afc9520c5027f8bbfeaf3bc88f0

Aliases

arxiv: astro-ph/0703221 · arxiv_version: astro-ph/0703221v1 · doi: 10.48550/arxiv.astro-ph/0703221 · pith_short_12: 55PLAOP24WU7 · pith_short_16: 55PLAOP24WU7GACK · pith_short_8: 55PLAOP2

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/55PLAOP24WU7GACK4C7LDB6ANP \
  | 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: ef5eb039fae5a9f3004ae0beb187c06be5947afc9520c5027f8bbfeaf3bc88f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ef7239f790daf8004ee7e633084b9602f1387f84a0aca660352830ff37bf6b4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-09T20:50:15Z",
    "title_canon_sha256": "e10746385d53bea10dba4ebf0a7bd612cb1f84cd858a2cc073593c3ddb4da641"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703221",
    "kind": "arxiv",
    "version": 1
  }
}