Pith Number

pith:IX3UEDW4

pith:1999:IX3UEDW4GHPF55MHOVR27U4GPD

not attested not anchored not stored refs pending

Intermittency as a possible underlying mechanism for solar and stellar variability

Eurico Covas, Reza Tavakol

arxiv:astro-ph/9904394 v1 · 1999-04-28 · 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{IX3UEDW4GHPF55MHOVR27U4GPD}

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	2026-07-04T14:16:41.313533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45f7420edc31de5ef5877563afd38678f92a7f54add514e9f59adead56f95b3d

Aliases

arxiv: astro-ph/9904394 · arxiv_version: astro-ph/9904394v1 · doi: 10.48550/arxiv.astro-ph/9904394 · pith_short_12: IX3UEDW4GHPF · pith_short_16: IX3UEDW4GHPF55MH · pith_short_8: IX3UEDW4

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/IX3UEDW4GHPF55MHOVR27U4GPD \
  | 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: 45f7420edc31de5ef5877563afd38678f92a7f54add514e9f59adead56f95b3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffdc39a9dca2c517b3134e1de8231fa1e15c7eb0d8984ca62401220edfaa4fdf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-28T16:27:21Z",
    "title_canon_sha256": "94f5c527e0d2f0876322de49e76e7d291492880c6c7db26c2a2eeab7f5958188"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904394",
    "kind": "arxiv",
    "version": 1
  }
}