Pith Number

pith:DWOUWV5H

pith:2000:DWOUWV5HGRH5ZTWHHYYZGTAGXU

not attested not anchored not stored refs pending

Solar cycle variation in solar f-mode frequencies and radius

B. Pohl, H. M. Antia, J. Pintar, Sarbani Basu

arxiv:astro-ph/0001293 v1 · 2000-01-17 · 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{DWOUWV5HGRH5ZTWHHYYZGTAGXU}

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	2026-05-18T01:40:48.450089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d9d4b57a7344fdccec73e31934c06bd1e5435e229a2dcdd5197c465de134d62

Aliases

arxiv: astro-ph/0001293 · arxiv_version: astro-ph/0001293v1 · doi: 10.48550/arxiv.astro-ph/0001293 · pith_short_12: DWOUWV5HGRH5 · pith_short_16: DWOUWV5HGRH5ZTWH · pith_short_8: DWOUWV5H

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/DWOUWV5HGRH5ZTWHHYYZGTAGXU \
  | 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: 1d9d4b57a7344fdccec73e31934c06bd1e5435e229a2dcdd5197c465de134d62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7914342bdaf272b9a477ce05ea3a726af0275638aec603148abb6769d79dae4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-01-17T12:30:54Z",
    "title_canon_sha256": "8d1b94eda59aae91cc7ed373c572793a8f336575d3f988496feed002422f3288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0001293",
    "kind": "arxiv",
    "version": 1
  }
}