Pith Number

pith:TZPNB33L

pith:2019:TZPNB33LBQ2IC7SIY3RYPI4HB5

not attested not anchored not stored refs pending

Filling Factors of Sunspots in SODISM Images

Abdrazag Algamudi, Amro F. Alasta, Fatma Almesrati, Mustapha Meftah, Rami Qahwaji

arxiv:1904.01133 v1 · 2019-04-01 · astro-ph.SR · astro-ph.IM · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZPNB33LBQ2IC7SIY3RYPI4HB5}

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	2026-05-17T23:49:35.824101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e5ed0ef6b0c34817e48c6e387a3870f42c885c73cf2217f1d625db82f6d2445

Aliases

arxiv: 1904.01133 · arxiv_version: 1904.01133v1 · doi: 10.48550/arxiv.1904.01133 · pith_short_12: TZPNB33LBQ2I · pith_short_16: TZPNB33LBQ2IC7SI · pith_short_8: TZPNB33L

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/TZPNB33LBQ2IC7SIY3RYPI4HB5 \
  | 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: 9e5ed0ef6b0c34817e48c6e387a3870f42c885c73cf2217f1d625db82f6d2445

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7df03992459790c0569448681a027b12cf0dc0854541a911ee76df3b8d319dc8",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-01T22:41:53Z",
    "title_canon_sha256": "5217f22eccee542e2299cf5d2b6c4b57381e4232dfacc85c8da0a43455835420"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.01133",
    "kind": "arxiv",
    "version": 1
  }
}