Pith Number

pith:I7UGA4EN

pith:2001:I7UGA4ENT27SLX2UPYSLDW7KWG

not attested not anchored not stored refs pending

Solar-cycle variation of the sound-speed asphericity from GONG and MDI data 1995-2000

F. Hill, H. M. Antia, J. Schou, R. Howe, R. W. Komm, S. Basu

arxiv:astro-ph/0109326 v1 · 2001-09-19 · 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{I7UGA4ENT27SLX2UPYSLDW7KWG}

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	2026-07-04T16:24:08.845220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47e860708d9ebf25df547e24b1dbeab1af9a66dbb1c44010cb94cb2503dfba59

Aliases

arxiv: astro-ph/0109326 · arxiv_version: astro-ph/0109326v1 · doi: 10.48550/arxiv.astro-ph/0109326 · pith_short_12: I7UGA4ENT27S · pith_short_16: I7UGA4ENT27SLX2U · pith_short_8: I7UGA4EN

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/I7UGA4ENT27SLX2UPYSLDW7KWG \
  | 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: 47e860708d9ebf25df547e24b1dbeab1af9a66dbb1c44010cb94cb2503dfba59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26c6273e882791efbedc8ff0cad63cdcb37c563c1a578256f0f7bb2f37925158",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-19T18:44:50Z",
    "title_canon_sha256": "d4b4d556db9f078d0b33e946590b7f8b05f08c49a403b1516e2e38310b904d76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109326",
    "kind": "arxiv",
    "version": 1
  }
}