Pith Number

pith:YIFXPRSN

pith:1998:YIFXPRSN7HQL2AF27UVU3VAN6Y

not attested not anchored not stored refs pending

Helioseismology and the solar age

B. Ricci, G. Fiorentini, R. Sienkiewicz, W.A. Dziembowski

arxiv:astro-ph/9809361 v1 · 1998-09-28 · 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{YIFXPRSN7HQL2AF27UVU3VAN6Y}

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	2026-07-04T14:16:03.763027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c20b77c64df9e0bd00bafd2b4dd40df60de0ff44a8e959f1f911de54f72634f1

Aliases

arxiv: astro-ph/9809361 · arxiv_version: astro-ph/9809361v1 · doi: 10.48550/arxiv.astro-ph/9809361 · pith_short_12: YIFXPRSN7HQL · pith_short_16: YIFXPRSN7HQL2AF2 · pith_short_8: YIFXPRSN

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/YIFXPRSN7HQL2AF27UVU3VAN6Y \
  | 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: c20b77c64df9e0bd00bafd2b4dd40df60de0ff44a8e959f1f911de54f72634f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f845b198820ae916e8b5deed4d9bd4359352fbee2fc869208cda42b66e410239",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-28T15:15:42Z",
    "title_canon_sha256": "a14b0c80bbcc68bc313bc9308771ce5a58519229000b535b24cd98647e2d272f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809361",
    "kind": "arxiv",
    "version": 1
  }
}