Pith Number

pith:3HOWDHFP

pith:2005:3HOWDHFP7JCHF34PINHWBPBOXH

not attested not anchored not stored refs pending

On the fine structure of the sunspot penumbrae. II. The nature of the Evershed flow

A. Lagg, J.M. Borrero, M. Collados, S.K. Solanki

arxiv:astro-ph/0503677 v1 · 2005-03-30 · 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{3HOWDHFP7JCHF34PINHWBPBOXH}

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	2026-07-04T16:51:49.819359Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9dd619caffa4472ef8f434f60bc2eb9e352a1d304bf01288a205923a1526df6

Aliases

arxiv: astro-ph/0503677 · arxiv_version: astro-ph/0503677v1 · doi: 10.48550/arxiv.astro-ph/0503677 · pith_short_12: 3HOWDHFP7JCH · pith_short_16: 3HOWDHFP7JCHF34P · pith_short_8: 3HOWDHFP

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/3HOWDHFP7JCHF34PINHWBPBOXH \
  | 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: d9dd619caffa4472ef8f434f60bc2eb9e352a1d304bf01288a205923a1526df6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89e077d0aca5b3576759d205cb9e651682eea17e85740298d91db137a546af5d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-30T21:13:26Z",
    "title_canon_sha256": "4282d03d703d3560c87817ce354a7c8b43024e0249a24dc8a8470439bacd6089"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503677",
    "kind": "arxiv",
    "version": 1
  }
}