Pith Number

pith:XE7HXTQS

pith:2003:XE7HXTQSR5Q5KRCYSM2M7U3Y2F

not attested not anchored not stored refs pending

Noise-Enhanced Parametric Resonance in Perturbed Galaxies

Henry E. Kandrup, Ioannis V. Sideris

arxiv:astro-ph/0308481 v1 · 2003-08-27 · 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{XE7HXTQSR5Q5KRCYSM2M7U3Y2F}

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	2026-07-04T16:51:31.877186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b93e7bce128f61d544589334cfd378d16ef17e61c6bfd6c401c3767d4c2f28ea

Aliases

arxiv: astro-ph/0308481 · arxiv_version: astro-ph/0308481v1 · doi: 10.48550/arxiv.astro-ph/0308481 · pith_short_12: XE7HXTQSR5Q5 · pith_short_16: XE7HXTQSR5Q5KRCY · pith_short_8: XE7HXTQS

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/XE7HXTQSR5Q5KRCYSM2M7U3Y2F \
  | 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: b93e7bce128f61d544589334cfd378d16ef17e61c6bfd6c401c3767d4c2f28ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcc7371ddf3f085b8c683a1546f78f6c28da79421cae781e69ca2ace6afa446e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-27T18:48:11Z",
    "title_canon_sha256": "fbf5302d2e44af27d136befb82ebb041bba219359c4f885da49c1aad2eb7080e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308481",
    "kind": "arxiv",
    "version": 1
  }
}