Pith Number

pith:5UNDSFB3

pith:1999:5UNDSFB3MD6CO6357ISCDFP5UN

not attested not anchored not stored refs pending

p-modes in and away from a sunspot

(2) Physical Research Laboratory), Brajesh Kumar (1), Hari Om Vats (2), M.R. Deshpande (2) ((1) Udaipur Solar Observatory, R. Jain (1), S.C. Tripathy (1)

arxiv:astro-ph/9912553 v1 · 1999-12-30 · 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{5UNDSFB3MD6CO6357ISCDFP5UN}

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	2026-05-18T01:40:12.180213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed1a39143b60fc277b7dfa242195fda348e7773446faeae891a118cd52c4f58c

Aliases

arxiv: astro-ph/9912553 · arxiv_version: astro-ph/9912553v1 · doi: 10.48550/arxiv.astro-ph/9912553 · pith_short_12: 5UNDSFB3MD6C · pith_short_16: 5UNDSFB3MD6CO635 · pith_short_8: 5UNDSFB3

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/5UNDSFB3MD6CO6357ISCDFP5UN \
  | 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: ed1a39143b60fc277b7dfa242195fda348e7773446faeae891a118cd52c4f58c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5942280f1dcb2e7dc1dfc559416d05137349d7cb39d4921f898fbf8f1d8fab63",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-30T11:11:02Z",
    "title_canon_sha256": "55de23a934264dfe106316381191f36aada2dad8591fdf4b4bde1ca05a18ef4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912553",
    "kind": "arxiv",
    "version": 1
  }
}